kernel/git/stable/linux.git/Documentation/virt/kvm/nested-vmx.rst, branch master

Documentation: KVM: add separate directories for architecture-specific documentation

2022-03-29T17:21:20+00:00

ARM already has an arm/ subdirectory, but s390 and x86 do not even though they have a relatively large number of files specific to them. Create new directories in Documentation/virt/kvm for these two architectures as well. While at it, group the API documentation and the developer documentation in the table of contents. Signed-off-by: Paolo Bonzini Message-Id: <20220322110712.222449-2-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini

KVM: Documentation: Fix documentation for nested.

2021-01-28T18:03:14+00:00

Nested VMX was enabled by default in commit 1e58e5e59148 ("KVM: VMX: enable nested virtualization by default"), which was merged in Linux 4.20. This patch is to fix the documentation accordingly. Signed-off-by: Yu Zhang Message-Id: <20210128154747.4242-1-yu.c.zhang@linux.intel.com> Signed-off-by: Paolo Bonzini

docs: kvm: Replace HTTP links with HTTPS ones

2020-07-13T15:34:07+00:00

Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov Link: https://lore.kernel.org/r/20200713114719.33839-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet

KVM: nVMX: Remove non-functional "support" for CR3 target values

2020-04-21T13:13:09+00:00

Remove all references to cr3_target_value[0-3] and replace the fields in vmcs12 with "dead_space" to preserve the vmcs12 layout. KVM doesn't support emulating CR3-target values, despite a variety of code that implies otherwise, as KVM unconditionally reports '0' for the number of supported CR3-target values. This technically fixes a bug where KVM would incorrectly allow VMREAD and VMWRITE to nonexistent fields, i.e. cr3_target_value[0-3]. Per Intel's SDM, the number of supported CR3-target values reported in VMX_MISC also enumerates the existence of the associated VMCS fields: If a future implementation supports more than 4 CR3-target values, they will be encoded consecutively following the 4 encodings given here. Alternatively, the "bug" could be fixed by actually advertisting support for 4 CR3-target values, but that'd likely just enable kvm-unit-tests given that no one has complained about lack of support for going on ten years, e.g. KVM, Xen and HyperV don't use CR3-target values. Signed-off-by: Sean Christopherson Message-Id: <20200416000739.9012-1-sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini

docs: kvm: Convert nested-vmx.txt to ReST format

2020-02-12T19:10:04+00:00

This file is almost in ReST format. Just a small set of changes were needed: - Add markups for lists; - Add markups for a literal block; - Adjust whitespaces. While here, use the standard markup for the document title. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Paolo Bonzini