AuxXxilium/linux_dsm_epyc7002
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fec9434a12
linux_dsm_epyc7002/arch/x86/kernel/cpu
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David Woodhouse fec9434a12 x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown 
Also, for CPUs which don't speculate at all, don't report that they're
vulnerable to the Spectre variants either.

Leave the cpu_no_meltdown[] match table with just X86_VENDOR_AMD in it
for now, even though that could be done with a simple comparison, on the
assumption that we'll have more to add.

Based on suggestions from Dave Hansen and Alan Cox.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: ak@linux.intel.com
Cc: ashok.raj@intel.com
Cc: karahmed@amazon.de
Cc: arjan@linux.intel.com
Cc: torvalds@linux-foundation.org
Cc: peterz@infradead.org
Cc: bp@alien8.de
Cc: pbonzini@redhat.com
Cc: tim.c.chen@linux.intel.com
Cc: gregkh@linux-foundation.org
Link: https://lkml.kernel.org/r/1516896855-7642-6-git-send-email-dwmw@amazon.co.uk
2018-01-26 15:53:18 +01:00
..
mcheck x86/mce: Make machine check speculation protected 2018-01-19 16:31:28 +01:00
microcode x86/microcode: Dont abuse the TLB-flush interface 2017-12-22 20:13:03 +01:00
mtrr License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
.gitignore
amd.c x86/cpu/AMD: Use LFENCE_RDTSC in preference to MFENCE_RDTSC 2018-01-09 01:43:11 +01:00
aperfmperf.c Revert "x86: CPU: Fix up "cpu MHz" in /proc/cpuinfo" 2017-11-10 11:19:11 -08:00
bugs.c module/retpoline: Warn about missing retpoline in module 2018-01-26 15:03:56 +01:00
centaur.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
common.c x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown 2018-01-26 15:53:18 +01:00
cpu.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cpuid-deps.c x86/cpuid: Replace set/clear_bit32() 2017-11-02 14:56:43 +01:00
cyrix.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hypervisor.c x86/virt: Add enum for hypervisors to replace x86_hyper 2017-11-10 10:03:12 +01:00
intel_cacheinfo.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
intel_rdt_ctrlmondata.c x86/intel_rdt/mbm: Add mbm counter initialization 2017-08-01 22:41:29 +02:00
intel_rdt_monitor.c x86/intel_rdt/cqm: Improve limbo list processing 2017-08-16 12:05:41 +02:00
intel_rdt_rdtgroup.c x86/intel_rdt: Remove redundant ternary operator on return 2017-08-16 16:20:55 +02:00
intel_rdt.c x86/intel_rdt: Turn off most RDT features on Skylake 2017-08-25 22:00:45 +02:00
intel_rdt.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
intel.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile Merge commit 'upstream-x86-entry' into WIP.x86/mm 2017-12-17 12:58:53 +01:00
match.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mkcapflags.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mshyperv.c x86/virt: Add enum for hypervisors to replace x86_hyper 2017-11-10 10:03:12 +01:00
perfctr-watchdog.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
powerflags.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
proc.c Revert "x86: CPU: Fix up "cpu MHz" in /proc/cpuinfo" 2017-11-10 11:19:11 -08:00
rdrand.c
scattered.c x86/cpufeatures: Add CPUID_7_EDX CPUID leaf 2018-01-26 15:53:16 +01:00
topology.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
transmeta.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
umc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vmware.c x86/virt: Add enum for hypervisors to replace x86_hyper 2017-11-10 10:03:12 +01:00