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| author | Mark Brown <broonie@kernel.org> | 2026-05-29 22:46:46 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-05-29 22:46:46 +0100 |
| commit | f08a9de96912e608e3f2d2c7c8c12fbdc6b98208 (patch) | |
| tree | 603f9be5717308bc74729857e55a12913436360c /Documentation | |
| parent | 10f1a9c9db76b998263c755761741b6101946a6e (diff) | |
| parent | b7fbe9a1bf9ee6c967ef77d366ca58c35fcf1887 (diff) | |
| download | linux-next-history-f08a9de96912e608e3f2d2c7c8c12fbdc6b98208.tar.gz | |
Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm.git
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/virt/kvm/x86/mmu.rst | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/Documentation/virt/kvm/x86/mmu.rst b/Documentation/virt/kvm/x86/mmu.rst index 2b3b6d442302b..666aa179601a1 100644 --- a/Documentation/virt/kvm/x86/mmu.rst +++ b/Documentation/virt/kvm/x86/mmu.rst @@ -184,10 +184,8 @@ Shadow pages contain the following information: Contains the value of efer.nx for which the page is valid. role.cr0_wp: Contains the value of cr0.wp for which the page is valid. - role.smep_andnot_wp: - Contains the value of cr4.smep && !cr0.wp for which the page is valid - (pages for which this is true are different from other pages; see the - treatment of cr0.wp=0 below). + role.cr4_smep: + Contains the value of cr4.smep for which the page is valid. role.smap_andnot_wp: Contains the value of cr4.smap && !cr0.wp for which the page is valid (pages for which this is true are different from other pages; see the @@ -435,8 +433,8 @@ from being written by the kernel after cr0.wp has changed to 1, we make the value of cr0.wp part of the page role. This means that an spte created with one value of cr0.wp cannot be used when cr0.wp has a different value - it will simply be missed by the shadow page lookup code. A similar issue -exists when an spte created with cr0.wp=0 and cr4.smep=0 is used after -changing cr4.smep to 1. To avoid this, the value of !cr0.wp && cr4.smep +exists when an spte created with cr0.wp=0 and cr4.smap=0 is used after +changing cr4.smap to 1. To avoid this, the value of !cr0.wp && cr4.smap is also made a part of the page role. Large pages |