kernel/git/next/linux-next.git/arch/powerpc/mm/slice.c, branch master

powerpc/mm: Make slice specific to book3s/64

2022-05-05T12:11:57+00:00

Since commit 555904d07eef ("powerpc/8xx: MM_SLICE is not needed anymore") only book3s/64 selects CONFIG_PPC_MM_SLICES. Move slice.c into mm/book3s64/ Move necessary stuff in asm/book3s/64/slice.h and remove asm/slice.h Signed-off-by: Christophe Leroy Reviewed-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/4a0d74ef1966a5902b5fd4ac4b513a760a6d675a.1649523076.git.christophe.leroy@csgroup.eu

powerpc/mm: Move vma_mmu_pagesize()

2022-05-05T12:11:57+00:00

vma_mmu_pagesize() is only required for slices, otherwise there is a generic weak version doing the exact same thing. Move it to slice.c Signed-off-by: Christophe Leroy Reviewed-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/1302e000d529c93d07208f1fae90f938e7a551b4.1649523076.git.christophe.leroy@csgroup.eu

powerpc/64s: Always define arch unmapped area calls

2021-12-09T11:40:24+00:00

To avoid any functional changes to radix paths when building with hash MMU support disabled (and CONFIG_PPC_MM_SLICES=n), always define the arch get_unmapped_area calls on 64s platforms. Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20211201144153.2456614-16-npiggin@gmail.com

powerpc: Replace _ALIGN_UP() by ALIGN()

2020-05-11T13:15:15+00:00

_ALIGN_UP() is specific to powerpc ALIGN() is generic and does the same Replace _ALIGN_UP() by ALIGN() Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Reviewed-by: Joel Stanley Link: https://lore.kernel.org/r/8a6d7e45f7904c73a0af539642d3962e2a3c7268.1587407777.git.christophe.leroy@c-s.fr

powerpc/mm: Mark get_slice_psize() & slice_addr_is_low() as notrace

2019-12-23T10:12:51+00:00

These slice routines are called from the SLB miss handler, which can lead to warnings from the IRQ code, because we have not reconciled the IRQ state properly: WARNING: CPU: 72 PID: 30150 at arch/powerpc/kernel/irq.c:258 arch_local_irq_restore.part.0+0xcc/0x100 Modules linked in: CPU: 72 PID: 30150 Comm: ftracetest Not tainted 5.5.0-rc2-gcc9x-g7e0165b2f1a9 #1 NIP: c00000000001d83c LR: c00000000029ab90 CTR: c00000000026cf90 REGS: c0000007eee3b960 TRAP: 0700 Not tainted (5.5.0-rc2-gcc9x-g7e0165b2f1a9) MSR: 8000000000021033 CR: 22242844 XER: 20000000 CFAR: c00000000001d780 IRQMASK: 0 ... NIP arch_local_irq_restore.part.0+0xcc/0x100 LR trace_graph_entry+0x270/0x340 Call Trace: trace_graph_entry+0x254/0x340 (unreliable) function_graph_enter+0xe4/0x1a0 prepare_ftrace_return+0xa0/0x130 ftrace_graph_caller+0x44/0x94 # (get_slice_psize()) slb_allocate_user+0x7c/0x100 do_slb_fault+0xf8/0x300 instruction_access_slb_common+0x140/0x180 Fixes: 48e7b7695745 ("powerpc/64s/hash: Convert SLB miss handlers to C") Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20191221121337.4894-1-mpe@ellerman.id.au

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30T18:26:35+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman

powerpc/mm: define subarch SLB_ADDR_LIMIT_DEFAULT

2019-05-02T15:20:23+00:00

This patch defines a subarch specific SLB_ADDR_LIMIT_DEFAULT to remove the #ifdefs around the setup of mm->context.slb_addr_limit It also generalises the use of mm_ctx_set_slb_addr_limit() helper. Signed-off-by: Christophe Leroy Reviewed-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman

powerpc/mm: remove a couple of #ifdef CONFIG_PPC_64K_PAGES in mm/slice.c

2019-05-02T15:20:23+00:00

This patch replaces a couple of #ifdef CONFIG_PPC_64K_PAGES by IS_ENABLED(CONFIG_PPC_64K_PAGES) to improve code maintainability. Signed-off-by: Christophe Leroy Reviewed-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman

powerpc/mm: remove unnecessary #ifdef CONFIG_PPC64

2019-05-02T15:20:22+00:00

For PPC32 that's a noop, gcc should be smart enough to ignore it. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/mm: move slice_mask_for_size() into mmu.h

2019-05-02T15:20:22+00:00

Move slice_mask_for_size() into subarch mmu.h Signed-off-by: Christophe Leroy Reviewed-by: Aneesh Kumar K.V [mpe: Retain the BUG_ON()s, rather than converting to VM_BUG_ON()] Signed-off-by: Michael Ellerman