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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-02 01:33:54 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-02 01:33:54 +0300 |
| commit | e0f4c59dc4d39b3e9fa61ceb4cf2384787bcd09d (patch) | |
| tree | 0a60c970a9606887b2ef6fd114aa8c0e4acd1446 /arch/x86/lib | |
| parent | 18398bb825eaa12c0d2f490767c2b85e531e0a4c (diff) | |
| parent | 415de44076640483648d6c0f6d645a9ee61328ad (diff) | |
| download | linux-e0f4c59dc4d39b3e9fa61ceb4cf2384787bcd09d.tar.xz | |
Merge tag 'x86_cpu_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu updates from Borislav Petkov:
- Start checking a CPUID bit on AMD Zen3 which states that the CPU
clears the segment base when a null selector is written. Do the
explicit detection on older CPUs, zen2 and hygon specifically, which
have the functionality but do not advertize the CPUID bit. Factor in
the presence of a hypervisor underneath the kernel and avoid doing
the explicit check there which the HV might've decided to not
advertize for migration safety reasons, or similar.
- Add support for a new X86 CPU vendor: VORTEX. Needed for whitelisting
those CPUs in the hardware vulnerabilities detection
- Force the compiler to use rIP-relative addressing in the fallback
path of static_cpu_has(), in order to avoid unnecessary register
pressure
* tag 'x86_cpu_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Fix migration safety with X86_BUG_NULL_SEL
x86/CPU: Add support for Vortex CPUs
x86/umip: Downgrade warning messages to debug loglevel
x86/asm: Avoid adding register pressure for the init case in static_cpu_has()
x86/asm: Add _ASM_RIP() macro for x86-64 (%rip) suffix
Diffstat (limited to 'arch/x86/lib')
0 files changed, 0 insertions, 0 deletions