31 lines
1.1 KiB
Diff
31 lines
1.1 KiB
Diff
From: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
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Date: Mon, 4 Nov 2019 12:22:01 +0100
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Subject: x86/cpu: Add Tremont to the cpu vulnerability whitelist
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commit cad14885a8d32c1c0d8eaa7bf5c0152a22b6080e upstream
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Add the new cpu family ATOM_TREMONT_D to the cpu vunerability
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whitelist. ATOM_TREMONT_D is not affected by X86_BUG_ITLB_MULTIHIT.
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ATOM_TREMONT_D might have mitigations against other issues as well, but
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only the ITLB multihit mitigation is confirmed at this point.
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Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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arch/x86/kernel/cpu/common.c | 2 ++
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1 file changed, 2 insertions(+)
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--- a/arch/x86/kernel/cpu/common.c
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+++ b/arch/x86/kernel/cpu/common.c
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@@ -1000,6 +1000,8 @@ static const __initconst struct x86_cpu_
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* good enough for our purposes.
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*/
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+ VULNWL_INTEL(ATOM_TREMONT_X, NO_ITLB_MULTIHIT),
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+
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/* AMD Family 0xf - 0x12 */
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VULNWL_AMD(0x0f, NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS | NO_SWAPGS | NO_ITLB_MULTIHIT),
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VULNWL_AMD(0x10, NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS | NO_SWAPGS | NO_ITLB_MULTIHIT),
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