| Age | Commit message (Collapse) | Author |
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Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.
Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.
Link: https://lkml.kernel.org/r/20260111082105.290734-11-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.
Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.
Since all variants of m68k add all memory to ZONE_DMA, it is possible to
use unified implementation for arch_zone_limits_init() that sets the end
of ZONE_DMA to memblock_end_of_DRAM().
Link: https://lkml.kernel.org/r/20260111082105.290734-10-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.
Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.
Link: https://lkml.kernel.org/r/20260111082105.290734-9-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.
Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.
Link: https://lkml.kernel.org/r/20260111082105.290734-8-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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|
Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.
Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.
Link: https://lkml.kernel.org/r/20260111082105.290734-7-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Guo Ren <guoren@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.
Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.
While on it rename zone_sizes_init() to dma_limits_init() to better
reflect what that function does.
Link: https://lkml.kernel.org/r/20260111082105.290734-6-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Unlike most architectures, arm keeps a struct page pointer to the
empty_zero_page and to initialize it requires conversion of a virtual
address to page which makes it necessary to have memory map initialized
before creating the empty_zero_page.
Make empty_zero_page a stataic array in BSS to decouple it's
initialization from the initialization of the memory map.
This also aligns arm with vast majorty of architectures.
Link: https://lkml.kernel.org/r/20260111082105.290734-5-rppt@kernel.org
Signed-off-by: Klara Modin <klarasmodin@gmail.com>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.
Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.
Link: https://lkml.kernel.org/r/20260111082105.290734-4-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.
Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.
Link: https://lkml.kernel.org/r/20260111082105.290734-3-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Vineet Gupta <vgupta@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Patch series "arch, mm: consolidate hugetlb early reservation", v3.
Order in which early memory reservation for hugetlb happens depends on
architecture, on configuration options and on command line parameters.
Some architectures rely on the core MM to call hugetlb_bootmem_alloc()
while others call it very early to allow pre-allocation of HVO-style
vmemmap.
When hugetlb_cma is supported by an architecture it is initialized during
setup_arch() and then later hugetlb_init code needs to understand did it
happen or not.
To make everything consistent and unified, both reservation of hugetlb
memory from bootmem and creation of CMA areas for hugetlb must be called
from core MM initialization and it would have been a simple change.
However, HVO-style pre-initialization ordering requirements slightly
complicate things and for HVO pre-init to work sparse and memory map
should be initialized after hugetlb reservations.
This required pulling out the call to free_area_init() out of setup_arch()
path and moving it MM initialization and this is what the first 23 patches
do.
These changes are deliberately split into per-arch patches that change how
the zone limits are calculated for each architecture and the patches 22
and 23 just remove the calls to free_area_init() and sprase_init() from
arch/*.
Patch 24 is a simple cleanup for MIPS.
Patches 25 and 26 actually consolidate hugetlb reservations and patches 27
and 28 perform some aftermath cleanups.
This patch (of 29):
Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.
Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.
Link: https://lkml.kernel.org/r/20260111082105.290734-1-rppt@kernel.org
Link: https://lkml.kernel.org/r/20260111082105.290734-2-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Magnus Lindholm <linmag7@gmail.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
This patch converts the existing glob selftest (lib/globtest.c) to use the
KUnit framework (lib/tests/glob_kunit.c).
The new test:
- Migrates all 64 test cases from the original test to the KUnit suite.
- Removes the custom 'verbose' module parameter as KUnit handles logging.
- Updates Kconfig.debug and Makefile to support the new KUnit test.
- Updates Kconfig and Makefile to remove the original selftest.
- Updates GLOB_SELFTEST to GLOB_KUNIT_TEST for arch/m68k/configs.
This commit is verified by `./tools/testing/kunit/kunit.py run'
with the .kunit/.kunitconfig:
CONFIG_KUNIT=y
CONFIG_GLOB_KUNIT_TEST=y
Link: https://lkml.kernel.org/r/20260108120753.27339-1-note351@hotmail.com
Signed-off-by: Kir Chou <note351@hotmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Cc: <kirchou@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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When the second-stage kernel is booted via kexec with a limiting command
line such as "mem=<size>", the physical range that contains the carried
over IMA measurement list may fall outside the truncated RAM leading to a
kernel panic.
BUG: unable to handle page fault for address: ffff97793ff47000
RIP: ima_restore_measurement_list+0xdc/0x45a
#PF: error_code(0x0000) – not-present page
Other architectures already validate the range with page_is_ram(), as done
in commit cbf9c4b9617b ("of: check previous kernel's ima-kexec-buffer
against memory bounds") do a similar check on x86.
Without carrying the measurement list across kexec, the attestation
would fail.
Link: https://lkml.kernel.org/r/20251231061609.907170-4-harshit.m.mogalapalli@oracle.com
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Fixes: b69a2afd5afc ("x86/kexec: Carry forward IMA measurement log on kexec")
Reported-by: Paul Webb <paul.x.webb@oracle.com>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
Cc: Alexander Graf <graf@amazon.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Betkov <bp@alien8.de>
Cc: guoweikang <guoweikang.kernel@gmail.com>
Cc: Henry Willard <henry.willard@oracle.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Bohac <jbohac@suse.cz>
Cc: Joel Granados <joel.granados@kernel.org>
Cc: Jonathan McDowell <noodles@fb.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Sohil Mehta <sohil.mehta@intel.com>
Cc: Sourabh Jain <sourabhjain@linux.ibm.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Cc: Yifei Liu <yifei.l.liu@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Move lib/test_min_heap.c to lib/tests/min_heap_kunit.c and convert it to
use KUnit.
This change switches the ad-hoc test code to standard KUnit test cases.
The test data remains the same, but the verification logic is updated to
use KUNIT_EXPECT_* macros.
Also remove CONFIG_TEST_MIN_HEAP from arch/*/configs/* because it is no
longer used. The new CONFIG_MIN_HEAP_KUNIT_TEST will be automatically
enabled by CONFIG_KUNIT_ALL_TESTS.
The reasons for converting to KUnit are:
1. Standardization:
Switching from ad-hoc printk-based reporting to the standard
KTAP format makes it easier for CI systems to parse and report test
results
2. Better Diagnostics:
Using KUNIT_EXPECT_* macros automatically provides detailed
diagnostics on failure.
3. Tooling Integration:
It allows the test to be managed and executed using standard
KUnit tools.
Link: https://lkml.kernel.org/r/20251221133516.321846-1-sakamo.ryota@gmail.com
Signed-off-by: Ryota Sakamoto <sakamo.ryota@gmail.com>
Acked-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: David Gow <davidgow@google.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Reinitialize metadata for large zone device private folios in
zone_device_page_init prior to creating a higher-order zone device private
folio. This step is necessary when the folio's order changes dynamically
between zone_device_page_init calls to avoid building a corrupt folio. As
part of the metadata reinitialization, the dev_pagemap must be passed in
from the caller because the pgmap stored in the folio page may have been
overwritten with a compound head.
Without this fix, individual pages could have invalid pgmap fields and
flags (with PG_locked being notably problematic) due to prior different
order allocations, which can, and will, result in kernel crashes.
Link: https://lkml.kernel.org/r/20260116111325.1736137-2-francois.dugast@intel.com
Fixes: d245f9b4ab80 ("mm/zone_device: support large zone device private folios")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Francois Dugast <francois.dugast@intel.com>
Acked-by: Felix Kuehling <felix.kuehling@amd.com>
Reviewed-by: Balbir Singh <balbirs@nvidia.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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strcpy() has been deprecated [1] because it performs no bounds checking
on the destination buffer, which can lead to buffer overflows. Replace
it with the safer strscpy().
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1]
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Greg Ungerer <gerg@kernel.org>
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68000 has different alignment needs to 68020+.
memcpy() checks if the destination is aligned and does a smaller copy
to fix the alignment and then critically for 68000 it checks if the
source is still unaligned and if it is reverts to smaller copies.
memmove() does not currently do the second part and malfunctions if
one of the pointers is aligned and the other isn't.
This is apparently getting triggered by printk. If I put breakpoints
into the new checks added by this commit the first hit looks like this:
memmove (n=205, src=0x2f3971 <printk_shared_pbufs+205>, dest=0x2f3980 <printk_shared_pbufs+220>) at arch/m68k/lib/memmove.c:82
Signed-off-by: Daniel Palmer <daniel@thingy.jp>
Signed-off-by: Greg Ungerer <gerg@kernel.org>
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- Drop 'CONFIG_I2C_COMPAT is not set' (removed in commit 7e722083fcc3
("i2c: Remove I2C_COMPAT config symbol and related code"))
- Drop 'CONFIG_SCHED_DEBUG is not set' (removed in commit b52173065e0a
("sched/debug: Remove CONFIG_SCHED_DEBUG"))
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
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The generic CC_CAN_LINK detection does not work for all architectures.
Make the logic easier to understand and allow the simplification of the
generic CC_CAN_LINK by using a tailored implementation.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
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https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into soc/dt
i.MX ARM device tree changes for 6.20:
- A few changes from Andreas Kemnade to correct LCDIF compatible
for i.MX6SL/i.MX6SLL, add EPD regulator for imx6sll-kobo-clara2e,
support TPS65185 for tolino-shine2 and e60k02
- A series from Frank Li to clean up GPMI CHECK_DTB warnings
- A change from Alexander Stein to add default GIC address cells
for imx6qdl
- A change from Josua Mayer to add EPD PMIC for imx50-kobo-aura
* tag 'imx-dt-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx: e60k02: add tps65185
ARM: dts: imx50-kobo-aura: add epd pmic description
ARM: dts: imx: tolino-shine2: add tps65185
ARM: dts: imx: move nand related property under nand@0
ARM: dts: imx6sx: update gpmi #size-cells to 0
ARM: dts: imx6qdl: add '#address-cells' and '#size-cells' for gpmi-nand
ARM: dts: imx: imx6sl: fix lcdif compatible
ARM: dts: imx: imx6sll-kobo-clara2e: add regulator for EPD
ARM: dts: imx: imx6sll: fix lcdif compatible
ARM: dts: imx6qdl: Add default GIC address cells
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Avoid one call/ret in networking RPS/RFS fast path, with no space cost.
scripts/bloat-o-meter -t vmlinux.before vmlinux.after
add/remove: 0/2 grow/shrink: 2/0 up/down: 96/-97 (-1)
Function old new delta
x2apic_send_IPI 146 198 +52
__x2apic_send_IPI_mask 326 370 +44
__pfx___x2apic_send_IPI_dest 16 - -16
__x2apic_send_IPI_dest 81 - -81
Total: Before=20861234, After=20861233, chg -0.00%
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20251223052026.4141498-1-edumazet@google.com
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https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/dt
Qualcomm Arm64 DeviceTree for v6.20
Introduce the Kaanapali SoC, with the MTP and QRD devices. Introduce
support for the Milos SoC (SM7635) and initial support for the Fairphone
(Gen 6) device on this platform.
Add the QCS6490-based RubikPI3 board, the QRB2210-based Arduino UnoQ,
the X Elite-based Medion SPRCHRGD 14 S1 and Surface Pro 11 laptops, and
the SDM845-based Pixel 3 and Pixel 3 XL devices.
On the Kodiak-based (QCS6490) RB3Gen2 the TC9563 PCIe switch controller
is described.
On Lemans (SA8775P/QCS9075) the GPU and crypto blocks are added.
IO-regions and clocks are added to interconnect nodes to allow QoS
configuration. GPU, TPM and USB support are enabled on the evaluation
kit (EVK).
On Monaco (QCS8300) the two PCIe controllers, the camera subsystem,
tsens, display subsystem, crypto, CPUfreq, and coresight are added. On
the evaluation kit (EVK) the PCIe busses are enabled, together with an
AMC6821-based fan controller and the ST33 TPM chip.
On MSM8939 the camera subsystem is described. The Asus ZenFone 2
Laser/Selfie gains battery and hall sensor support.
On the Agatti-based RB1 board PM8008 is described and an overlay for the
Vision mezzanine is introduced.
On SDM630 the compute DSP remoteproc, FastRPC and related entites are
described. The LPASS LPI pinctrl node is described.
On SDM845-based OnePlus device the bootloader framebuffer and its
resources are described, to improve the transition. On the SDM845-based
devices from OnePlus, SHIFT, and Xiaomi ath10k calibration variants are
specified. The sensor remoteproc is enabled on Xiaomi Pocophone F1.
On SM7225-based Fairphone FP4 regulators for the cameras are described,
and the camera EEPROM is added.
On SM8650 the camera subsystem is described. On the QRD the Samsung
S5KJN1 camera sensor is added, and for the HDK an overlay for the "Rear
Camera Card" is added.
On SM8750 CPUfreq, SDCHCI and Iris (video encode/decode) support are
added, and missing - required - properties for the BAM DMA is added.
These are then enabled on the MTP.
On Talos (SM6150/QCS615) PMU, DisplayPort, and USB/DP combo PHY are added.
DisplayPort is enabled on the Talos Ride board.
On Hamoa (X Elite) add crypto engine, missing TCSR reference clocks, and
random number generator block. The soc bus address width is corrected to
match the hardware. On the Lenovo Thinkpad T14s HDMI and audio playback
over DisplayPort is introduced. HDMI, Iris (video encode/decode) and
PS8830 retimers are described for the ASUS Vivobook S 15. On the Hamoa
evaluation kit (EVK) PCIe busses, WiFi, backlight, TPM and RG
(red/green) LEDs are described.
Enable QSEECOM, and thereby UEFI variable access, on the Medion SPRCHRGD
14 S1 (commit should have been on drivers branch).
* tag 'qcom-arm64-for-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (155 commits)
dt-bindings: mailbox: qcom: Add IPCC support for Kaanapali and Glymur Platforms
dt-bindings: mailbox: qcom: Add CPUCP mailbox controller bindings for Kaanapali
arm64: dts: qcom: lemans: enable static TPDM
arm64: dts: qcom: kodiak: Add memory region for audiopd
arm64: dts: qcom: x1e78100-lenovo-thinkpad-t14s: add HDMI nodes
arm64: dts: qcom: x1e: bus is 40-bits (fix 64GB models)
arm64: dts: qcom: lemans; Add EL2 overlay
arm64: dts: qcom: sm8150: add uart13
arm64: dts: qcom: sdm845-db845c: specify power for WiFi CH1
arm64: dts: qcom: sdm845-db845c: drop CS from SPIO0
arm64: dts: qcom: qrb4210-rb2: Fix UART3 wakeup IRQ storm
arm64: dts: qcom: sm6125-ginkgo: Fix missing msm-id subtype
arm64: dts: qcom: qcs8300: Add GPU cooling
arm64: dts: qcom: sa8775p: Add reg and clocks for QoS configuration
arm64: dts: qcom: hamoa-iot-evk: Enable TPM (ST33) on SPI11
arm64: dts: qcom: talos: Add PMU support
arm64: dts: qcom: talos: switch to interrupt-cells 4 to add PPI partitions
arm64: dts: qcom: ipq9574: Complete USB DWC3 wrapper interrupts
arm64: dts: qcom: ipq5018: Correct USB DWC3 wrapper interrupts
arm64: dts: qcom: monaco: Add CTCU and ETR nodes
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/dt
Qualcomm Arm32 DeviceTree updates for v6.20
Migrate the MSM8974 remoteproc power supplies to RPM provided
power-domains, to match what is done on most other platforms.
Give the LG Nexus 5 its more human friendly model name.
* tag 'qcom-arm32-for-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
ARM: dts: qcom: msm8974: Start using rpmpd for power domains
ARM: dts: qcom: msm8974: Sort header includes alphabetically
ARM: dts: qcom: msm8974-hammerhead: Update model property
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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soc/dt
arm64: Xilinx DT changes for 6.20
- Cleanup SPI compatible strings
- wwdt: Add optional power-domains property
- ZynqMP: Fix OPP description and setup
- ZynqMP: Remove OP-TEE node
- Drop label from dlg,slg7xl45106
- Remove ina260 IIO description
* tag 'zynqmp-dt-for-6.20' of https://github.com/Xilinx/linux-xlnx:
arm64: zynqmp: Remove ina260 IIO description
arm64: dts: xilinx: Drop "label" property on dlg,slg7xl45106
Revert "arm64: zynqmp: Add an OP-TEE node to the device tree"
arm64: dts: xilinx: fix zynqmp opp-table-cpu
dt-bindings: watchdog: xlnx,versal-wwdt: Add optional power-domains property
arm64: dts: xilinx: add soc-specific spi compatibles for zynqmp/versal-net
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/dt
arm64: tegra: Changes for v6.20-rc1
This update improves Device Tree support for 64-bit Tegra platforms,
specifically focusing on the Smaug board and the Tegra264 SoC. It
enables full USB-C functionality on Smaug by adding role-switching
support and enabling DisplayPort altmode. For Tegra264, it introduces
nodes for Command Queue Virtualization (CMDQV) in the SMMU, adds the
Data Backbone (DBB) clock for the memory controller, and corrects CPU
compatible strings to match the Neoverse V3AE core. Additionally, it
performs a cleanup by removing redundant status = "okay" properties
across Tegra186, Tegra194, Tegra234, and Tegra264 files.
* tag 'tegra-for-6.20-arm64-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
arm64: tegra: smaug: Add usb-role-switch support
arm64: tegra: smaug: Complete and enable tegra-udc node
arm64: tegra: smaug: Enable DisplayPort via USB-C port
arm64: tegra: Correct CPU compatibles on Tegra264
arm64: tegra: Drop unneeded status=okay on Tegra264
arm64: tegra: Drop unneeded status=okay on Tegra234
arm64: tegra: Drop unneeded status=okay on Tegra194
arm64: tegra: Drop unneeded status=okay on Tegra186
arm64: tegra: Add nodes for CMDQV
arm64: tegra: Add DBB clock to EMC on Tegra264
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/dt
ARM: tegra: Device tree changes for v6.20-rc1
This update corrects the DSI Device Tree nodes for Tegra20 and Tegra30
by adding missing properties (nvidia,mipi-calibrate and cell
definitions) to ensure proper MIPI calibration support.
* tag 'tegra-for-6.20-arm-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
ARM: tegra: Adjust DSI nodes for Tegra20/Tegra30
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This .dtsi file is not included anywhere in the tree and can't be
tested.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20251212203226.458694-7-robh@kernel.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20260117182257.14799-2-krzk@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The DTS code coding style expects exactly one space around '='
character.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250819131725.86770-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20260117182117.14483-4-krzk@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/dt
Samsung DTS ARM64 changes for v6.20
1. ExynosAutov920:
- Add MFD clock controller node.
2. Google GS101:
- Add True Random Number Generator (TRNG) and OTP nvmem nodes.
- Correct the PMU (Power Management Unit) compatibles by dropping
fallback to syscon. The PMU on Samsung devices serves the role of
syscon, however on GS101 it cannot be used via standard Linux syscon
interface, because register accesses require custom regmap. It was
simply never correctly working with "syscon" compatible fallback.
- Add phandles to System Registers SYSREG blocks in clock controllers,
necessary for enabling automatic clock control later.
* tag 'samsung-dt64-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
arm64: dts: exynos: gs101: add OTP node
arm64: dts: exynos: gs101: add samsung,sysreg property to CMU nodes
arm64: dts: exynosautov920: add CMU_MFD clock DT nodes
arm64: dts: exynos: gs101: remove syscon compatible from pmu node
dt-bindings: soc: samsung: exynos-pmu: remove syscon for google,gs101-pmu
arm64: dts: exynos: gs101: add TRNG node
dt-bindings: rng: add google,gs101-trng compatible
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-dt into soc/dt
Minor improvements in ARM64 DTS for v6.20
Several minor cleanups for Nuvoton, LG, Spreadtrum, Toshiba, Cavium, ARM
and APM SoCs:
1. Switch to recommended node names by fixing style
(s/lowercase/hyphen/), using generic naming and adhering to DT
bindings.
2. Use consistent whitespaces around.
3. Add missing properties like UART clocks (Cavium Thunder 88xx) or
"reg" (APM).
4. Drop incorrect or long time deprecated propeties.
5. Correct clock cells to 0 for fixed-factor-clock clocks.
* tag 'dt64-cleanup-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-dt:
arm64: dts: apm: Drop "dma" device_type
arm64: dts: apm: Add "reg" to "syscon-reboot" and "syscon-poweroff"
arm64: dts: apm: Use recommended i2c node names
arm64: dts: apm/shadowcat: More clock clean-ups
ARM: dts: vexpress/v2m-rs1: Use documented arm,vexpress,config-bus child node names
arm64: dts: cavium: Drop thunder2
arm64: dts: cavium: thunder-88xx: Add missing PL011 "uartclk"
arm64: dts: toshiba: Use recommended node names
arm64: dts: sprd: Use recommended node names
arm64: dts: lg: Use recommended simple-bus node name
arm64: dts: nuvoton: npcm845: Minor whitespace cleanup
arm64: dts: toshiba: tmpv7708: Align node names with DT bindings
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into soc/dt
Renesas DTS updates for v6.20 (take two)
- Add cpufreq, thermal, GPIO IRQ, and CAN-FD support for the RZ/T2H
and RZ/N2H SoCs and their EVK boards,
- Add more serial (RSCI) and CAN-FD support for the RZ/V2H and RZ/V2N
SoCs,
- Drop unused .dtsi files,
- Add I3C support for the RZ/G3E SMARC SoM,
- Add GPIO support for the RZ/N1 SoC,
- Miscellaneous fixes and improvements.
* tag 'renesas-dts-for-v6.20-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel: (27 commits)
arm64: dts: renesas: rzt2h-rzn2h-evk: Reorder ADC nodes
ARM: dts: r9a06g032: Add support for GPIO interrupts
ARM: dts: r9a06g032: Add GPIO controllers
arm64: dts: renesas: rzg3e-smarc-som: Enable I3C support
arm64: dts: renesas: Use lowercase hex
arm64: dts: renesas: Use hyphens in node names
arm/arm64: dts: renesas: Drop unused .dtsi
arm64: dts: renesas: rzt2h-n2h-evk-common: Use GPIO for SD0 write protect
arm64: dts: renesas: r9a09g057: Add CANFD node
arm64: dts: renesas: r9a09g056: Add CANFD node
arm64: dts: renesas: r9a09g087m44-rzn2h-evk: Enable CANFD
arm64: dts: renesas: r9a09g077m44-rzt2h-evk: Enable CANFD
arm64: dts: renesas: r9a09g087: Add CANFD node
arm64: dts: renesas: r9a09g077: Add CANFD node
arm64: dts: renesas: r9a09g057: Add RSCI nodes
arm64: dts: renesas: r9a09g056: Add RSCI nodes
arm64: dts: renesas: r9a09g087m44-rzn2h-evk: Add GPIO keys
arm64: dts: renesas: r9a09g077m44-rzt2h-evk: Add GPIO keys
arm64: dts: renesas: r9a09g087: Add GPIO IRQ support
arm64: dts: renesas: r9a09g077: Add GPIO IRQ support
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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fields
Drop KVM's filtering of GUEST_INTR_STATUS when generating the shadow VMCS
bitmap now that KVM drops GUEST_INTR_STATUS from the set of supported
vmcs12 fields if the field isn't supported by hardware, and initialization
of the shadow VMCS fields omits unsupported vmcs12 fields.
Note, there is technically a small functional change here, as the vmcs12
filtering only requires support for Virtual Interrupt Delivery, whereas
the shadow VMCS code being removed required "full" APICv support, i.e.
required Virtual Interrupt Delivery *and* APIC Register Virtualizaton *and*
Posted Interrupt support.
Opportunistically tweak the comment to more precisely explain why the
PML and VMX preemption timer fields need to be explicitly checked.
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Link: https://patch.msgid.link/20260115173427.716021-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Disallow access (VMREAD/VMWRITE), both emulated and via a shadow VMCS, to
VMCS fields that the loaded incarnation of KVM doesn't support, e.g. due
to lack of hardware support, as a middle ground between allowing access to
any vmcs12 field defined by KVM (current behavior) and gating access based
on the userspace-defined vCPU model (the most functionally correct, but
very costly, implementation).
Disallowing access to unsupported fields helps a tiny bit in terms of
closing the virtualization hole (see below), but the main motivation is to
avoid having to weed out unsupported fields when synchronizing between
vmcs12 and a shadow VMCS. Because shadow VMCS accesses are done via
VMREAD and VMWRITE, KVM _must_ filter out unsupported fields (or eat
VMREAD/VMWRITE failures), and filtering out just shadow VMCS fields is
about the same amount of effort, and arguably much more confusing.
As a bonus, this also fixes a KVM-Unit-Test failure bug when running on
_hardware_ without support for TSC Scaling, which fails with the same
signature as the bug fixed by commit ba1f82456ba8 ("KVM: nVMX: Dynamically
compute max VMCS index for vmcs12"):
FAIL: VMX_VMCS_ENUM.MAX_INDEX expected: 19, actual: 17
Dynamically computing the max VMCS index only resolved the issue where KVM
was hardcoding max index, but for CPUs with TSC Scaling, that was "good
enough".
Reviewed-by: Chao Gao <chao.gao@intel.com>
Reviewed-by: Xin Li <xin@zytor.com>
Cc: Xiaoyao Li <xiaoyao.li@intel.com>
Cc: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://lore.kernel.org/all/20251026201911.505204-22-xin@zytor.com
Link: https://lore.kernel.org/all/YR2Tf9WPNEzrE7Xg@google.com
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Link: https://patch.msgid.link/20260115173427.716021-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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vsprintf() performs no bounds checking and can overflow - replace it
with the safer vsnprintf().
Also remove the useless '+ 1' that is a leftover of commit 66ed28ea096c
("m68k: sun3: Remove unused vsprintf() return value in prom_printf()").
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://patch.msgid.link/20260117202152.1036278-2-thorsten.blum@linux.dev
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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'fork' implements copy-on-write (COW) by making pages readonly in both
child and parent.
ptep_set_wrprotect() and pte_wrprotect() clear _PAGE_WRITE in PTE.
The assumption is that the page is readable and, on a fault,
copy-on-write happens.
To implement COW on shadow stack pages, clearing the W bit makes them
XWR = 000. This will result in the wrong PTE setting, which allows no
permissions, but with V=1 and the PFN field pointing to the final
page. Instead, the desired behavior is to turn it into a readable
page, take an access (load/store) fault on sspush/sspop (shadow stack)
and then perform COW on such pages. This way regular reads would still
be allowed and not lead to COW maintaining current behavior of COW on
non-shadow stack but writeable memory.
On the other hand, this doesn't interfere with existing COW for
read-write memory. The assumption is always that _PAGE_READ must have
been set, and thus, setting _PAGE_READ is harmless.
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Tested-by: Andreas Korb <andreas.korb@aisec.fraunhofer.de> # QEMU, custom CVA6
Tested-by: Valentin Haudiquet <valentin.haudiquet@canonical.com>
Link: https://patch.msgid.link/20251112-v5_user_cfi_series-v23-9-b55691eacf4f@rivosinc.com
[pjw@kernel.org: clarify patch description]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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pte_mkwrite() creates PTEs with WRITE encodings for the underlying
architecture. The underlying architecture can have two types of
writeable mappings: one that can be written using regular store
instructions, and another one that can only be written using
specialized store instructions (like shadow stack stores).
pte_mkwrite can select write PTE encoding based on VMA range (i.e.
VM_SHADOW_STACK)
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Tested-by: Andreas Korb <andreas.korb@aisec.fraunhofer.de> # QEMU, custom CVA6
Tested-by: Valentin Haudiquet <valentin.haudiquet@canonical.com>
Link: https://patch.msgid.link/20251112-v5_user_cfi_series-v23-8-b55691eacf4f@rivosinc.com
[pjw@kernel.org: cleaned up patch description]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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This patch implements the creation of a shadow stack pte on
riscv. Creating shadow stack PTE on riscv means clearing RWX and then
setting W=1.
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Tested-by: Andreas Korb <andreas.korb@aisec.fraunhofer.de> # QEMU, custom CVA6
Tested-by: Valentin Haudiquet <valentin.haudiquet@canonical.com>
Link: https://patch.msgid.link/20251112-v5_user_cfi_series-v23-7-b55691eacf4f@rivosinc.com
[pjw@kernel.org: cleaned up patch description]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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'arch_calc_vm_prot_bits' is implemented on risc-v to return VM_READ |
VM_WRITE if PROT_WRITE is specified. Similarly 'riscv_sys_mmap' is
updated to convert all incoming PROT_WRITE to (PROT_WRITE | PROT_READ).
This is to make sure that any existing apps using PROT_WRITE still work.
Earlier 'protection_map[VM_WRITE]' used to pick read-write PTE encodings.
Now 'protection_map[VM_WRITE]' will always pick PAGE_SHADOWSTACK PTE
encodings for shadow stack. The above changes ensure that existing apps
continue to work because underneath, the kernel will be picking
'protection_map[VM_WRITE|VM_READ]' PTE encodings.
Reviewed-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Tested-by: Andreas Korb <andreas.korb@aisec.fraunhofer.de> # QEMU, custom CVA6
Tested-by: Valentin Haudiquet <valentin.haudiquet@canonical.com>
Link: https://patch.msgid.link/20251112-v5_user_cfi_series-v23-6-b55691eacf4f@rivosinc.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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Carve out space in the RISC-V architecture-specific thread struct for
cfi status and shadow stack in usermode.
This patch:
- defines a new structure cfi_status with status bit for cfi feature
- defines shadow stack pointer, base and size in cfi_status structure
- defines offsets to new member fields in thread in asm-offsets.c
- saves and restores shadow stack pointer on trap entry (U --> S) and exit
(S --> U)
Shadow stack save/restore is gated on feature availability and is
implemented using alternatives. CSR_SSP can be context-switched in
'switch_to' as well, but as soon as kernel shadow stack support gets
rolled in, the shadow stack pointer will need to be switched at trap
entry/exit point (much like 'sp'). It can be argued that a kernel
using a shadow stack deployment scenario may not be as prevalent as
user mode using this feature. But even if there is some minimal
deployment of kernel shadow stack, that means that it needs to be
supported. Thus save/restore of shadow stack pointer is implemented
in entry.S instead of in 'switch_to.h'.
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Tested-by: Andreas Korb <andreas.korb@aisec.fraunhofer.de> # QEMU, custom CVA6
Tested-by: Valentin Haudiquet <valentin.haudiquet@canonical.com>
Link: https://patch.msgid.link/20251112-v5_user_cfi_series-v23-5-b55691eacf4f@rivosinc.com
[pjw@kernel.org: cleaned up patch description]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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The Zicfiss and Zicfilp extensions are enabled via b3 and b2 in
*envcfg CSRs. menvcfg controls enabling for S/HS mode. henvcfg
controls enabling for VS. senvcfg controls enabling for U/VU mode.
The Zicfilp extension extends *status CSRs to hold an 'expected
landing pad' bit. A trap or interrupt can occur between an indirect
jmp/call and target instruction. The 'expected landing pad' bit from
the CPU is recorded into the xstatus CSR so that when the supervisor
performs xret, the 'expected landing pad' state of the CPU can be
restored.
Zicfiss adds one new CSR, CSR_SSP, which contains the current shadow
stack pointer.
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Tested-by: Andreas Korb <andreas.korb@aisec.fraunhofer.de> # QEMU, custom CVA6
Tested-by: Valentin Haudiquet <valentin.haudiquet@canonical.com>
Link: https://patch.msgid.link/20251112-v5_user_cfi_series-v23-4-b55691eacf4f@rivosinc.com
[pjw@kernel.org: grouped CSR_SSP macro with the other CSR macros; clarified patch description]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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This patch adds support for detecting the RISC-V ISA extensions
Zicfiss and Zicfilp. Zicfiss and Zicfilp stand for the unprivileged
integer spec extensions for shadow stack and indirect branch tracking,
respectively.
This patch looks for Zicfiss and Zicfilp in the device tree and
accordingly lights up the corresponding bits in the cpu feature
bitmap. Furthermore this patch adds detection utility functions to
return whether shadow stack or landing pads are supported by the cpu.
Reviewed-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Tested-by: Andreas Korb <andreas.korb@aisec.fraunhofer.de> # QEMU, custom CVA6
Tested-by: Valentin Haudiquet <valentin.haudiquet@canonical.com>
Link: https://patch.msgid.link/20251112-v5_user_cfi_series-v23-3-b55691eacf4f@rivosinc.com
[pjw@kernel.org: updated to apply; cleaned up patch description]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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NLS_ISO8859_1 was enabled as a module with commit efe1e08bca9a ("riscv:
defconfig: enable NLS_CODEPAGE_437, NLS_ISO8859_1"), but the
NLS_CODEPAGE_437 counterpart is selected as built-in. The commit does
not explain the reason behind, and it is not consistent with the
defconfig for ARM64 that also enables these modules to mount EFI system
partitions.
Select NLS_ISO8859_1 as built-in to provide both requirements within the
kernel image.
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20260111-nls_iso8859_1_y_riscv-v1-1-2c992bb2c00d@gmail.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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Currently, the implementation of copy_user_page() is identical to
copy_page().
Align riscv with other architectures (alpha, arc, arm64, hexagon,
longarch, m68k, openrisc, s390, um, xtensa) and map copy_user_page()
to copy_page() given that their implementation is identical.
In addition to following a common pattern, this centralizes the
implementation. Any changes to the underlying page copy logic (e.g.,
for CHERI) will now automatically propagate to copy_user_page().
Signed-off-by: Florian Schmaus <florian.schmaus@codasip.com>
Link: https://patch.msgid.link/20260113134025.905627-1-florian.schmaus@codasip.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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When both the SiFive and MIPS errata are enabled then
sifive_errata_patch_func emits a wrong and misleading warning claiming
that the SiFive errata haven't been applied. This happens because
sifive_errata_patch_func is being called twice, once for the kernel image
and once for the vdso image. The vdso image has alternative entries
for the MIPS errata, but none for the SiFive errata.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Link: https://patch.msgid.link/mvmv7i8q8gg.fsf@suse.de
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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Some developers may be confused because RISC-V does not have
a register named r0. Also, orig_r0 is not available in pt_regs structure,
which is specific to riscv. So we had better fix this minor typo.
Signed-off-by: Austin Kim <austin.kim@lge.com>
Link: https://patch.msgid.link/aW3Z4zTBvGJpk7a7@adminpc-PowerEdge-R7525
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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Clean up a few warnings reported by sparse in
arch/riscv/kernel/signal.c. These come from code that was added
recently; they were missed when I initially reviewed the patch.
Fixes: 818d78ba1b3f ("riscv: signal: abstract header saving for setup_sigcontext")
Cc: Andy Chiu <andybnac@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202601171848.ydLTJYrz-lkp@intel.com/
[pjw@kernel.org: updated to apply]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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Restore PAGE_S2_MEMATTR() to its former glory, keeping the use of
FWB as an implementation detail.
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260123191637.715429-6-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
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Nobody is using this flag anymore, so remove it. This allows
some cleanup by removing stage2_has_fwb(), which is can be replaced
by a direct check on the capability.
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260123191637.715429-5-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
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Since we have the basics to use the S1 memory attributes as the
final ones with FWB, flip the host over to that when FWB is present.
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Tested-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260123191637.715429-4-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
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Plumb the MT_S2{,_FWB}_AS_S1 memory types into the KVM_S2_MEMATTR()
macro with a new KVM_PGTABLE_S2_AS_S1 flag.
Nobody selects it yet.
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260123191637.715429-3-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
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pKVM usage of S2 translation on the host is purely for isolation
purposes, not translation. To that effect, the memory attributes
being used must be that of S1.
With FWB=0, this is easily achieved by using the Normal Cacheable
type (which is the weakest possible memory type) at S2, and let S1
pick something stronger as required.
With FWB=1, the attributes are combined in a different way, and we
cannot arbitrarily use Normal Cacheable. We can, however, use a
memattr encoding that indicates that the final attributes are that
of Stage-1.
Add these encoding and a few pointers to the relevant parts of the
specification. It might come handy some day.
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260123191637.715429-2-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
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