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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-04-14 14:24:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-04-14 14:24:45 -0700 |
| commit | 9f2bb6c7b364f186aa37c524f6df33bd488d4efa (patch) | |
| tree | bb3334b84c1bfaaed5ac763282d1f8a38d3db946 /Documentation/admin-guide | |
| parent | 49b30f3e9cde3403b8719dfcddc923bce572b69c (diff) | |
| parent | 124ad3034ec0029b65178f3ab8a6cdca5a0b0519 (diff) | |
Merge tag 'x86_cpu_for_7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu updates from Dave Hansen:
- Complete LASS enabling: deal with vsyscall and EFI
The existing Linear Address Space Separation (LASS) support punted
on support for common EFI and vsyscall configs. Complete the
implementation by supporting EFI and vsyscall=xonly.
- Clean up CPUID usage in newer Intel "avs" audio driver and update the
x86-cpuid-db file
* tag 'x86_cpu_for_7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tools/x86/kcpuid: Update bitfields to x86-cpuid-db v3.0
ASoC: Intel: avs: Include CPUID header at file scope
ASoC: Intel: avs: Check maximum valid CPUID leaf
x86/cpu: Remove LASS restriction on vsyscall emulation
x86/vsyscall: Disable LASS if vsyscall mode is set to EMULATE
x86/vsyscall: Restore vsyscall=xonly mode under LASS
x86/traps: Consolidate user fixups in the #GP handler
x86/vsyscall: Reorganize the page fault emulation code
x86/cpu: Remove LASS restriction on EFI
x86/efi: Disable LASS while executing runtime services
x86/cpu: Defer LASS enabling until userspace comes up
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 46c5d295c06a..291f4da37712 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -8398,7 +8398,9 @@ Kernel parameters emulate Vsyscalls turn into traps and are emulated reasonably safely. The vsyscall page is - readable. + readable. This disables the Linear + Address Space Separation (LASS) security + feature and makes the system less secure. xonly [default] Vsyscalls turn into traps and are emulated reasonably safely. The vsyscall |