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Commit 402c3205 authored by Pawan Gupta's avatar Pawan Gupta Committed by Greg Kroah-Hartman
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x86/cpu: Add Tremont to the cpu vulnerability whitelist 



commit cad14885a8d32c1c0d8eaa7bf5c0152a22b6080e upstream.

Add the new cpu family ATOM_TREMONT_D to the cpu vunerability
whitelist. ATOM_TREMONT_D is not affected by X86_BUG_ITLB_MULTIHIT.

ATOM_TREMONT_D might have mitigations against other issues as well, but
only the ITLB multihit mitigation is confirmed at this point.

Signed-off-by: default avatarPawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 56a0f386

arch/x86/kernel/cpu/common.c

+2 −0
Original line number Diff line number Diff line
@@ -951,6 +951,8 @@ static const __initconst struct x86_cpu_id cpu_vuln_whitelist[] = { 
	 * good enough for our purposes.

	 */



	VULNWL_INTEL(ATOM_TREMONT_X,		NO_ITLB_MULTIHIT),



	/* AMD Family 0xf - 0x12 */

	VULNWL_AMD(0x0f,	NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS | NO_SWAPGS | NO_ITLB_MULTIHIT),

	VULNWL_AMD(0x10,	NO_MELTDOWN | NO_SSB | NO_L1TF | NO_MDS | NO_SWAPGS | NO_ITLB_MULTIHIT),