From: Paolo Bonzini <pbonzini@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: [PATCH 2/7] x86/cpu: Add Tremont to the cpu vulnerability whitelist
Date: Tue, 12 Nov 2019 22:21:32 +0100 [thread overview]
Message-ID: <1573593697-25061-3-git-send-email-pbonzini@redhat.com> (raw)
In-Reply-To: <1573593697-25061-1-git-send-email-pbonzini@redhat.com>
From: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
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: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/kernel/cpu/common.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index d29b71ca3ca7..fffe21945374 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1074,6 +1074,8 @@ static void identify_cpu_without_cpuid(struct cpuinfo_x86 *c)
* good enough for our purposes.
*/
+ VULNWL_INTEL(ATOM_TREMONT_D, 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),
--
1.8.3.1
next prev parent reply other threads:[~2019-11-12 21:22 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-12 21:21 [FYI PATCH 0/7] Mitigation for CVE-2018-12207 Paolo Bonzini
2019-11-12 21:21 ` [PATCH 1/7] x86/bugs: Add ITLB_MULTIHIT bug infrastructure Paolo Bonzini
2019-11-12 21:21 ` Paolo Bonzini [this message]
2019-11-12 21:21 ` [PATCH 3/7] cpu/speculation: Uninline and export CPU mitigations helpers Paolo Bonzini
2019-11-12 21:21 ` [PATCH 4/7] kvm: mmu: ITLB_MULTIHIT mitigation Paolo Bonzini
2019-11-12 21:21 ` [PATCH 5/7] kvm: Add helper function for creating VM worker threads Paolo Bonzini
2019-11-12 21:21 ` [PATCH 6/7] kvm: x86: mmu: Recovery of shattered NX large pages Paolo Bonzini
2019-11-12 21:21 ` [PATCH 7/7] Documentation: Add ITLB_MULTIHIT documentation Paolo Bonzini
2019-11-13 6:38 ` [FYI PATCH 0/7] Mitigation for CVE-2018-12207 Jan Kiszka
2019-11-13 8:23 ` Paolo Bonzini
2019-11-13 21:24 ` Dave Hansen
2019-11-14 1:17 ` Nadav Amit
2019-11-14 5:26 ` Dave Hansen
2019-11-14 6:02 ` Nadav Amit
2019-11-15 2:11 ` Pawan Gupta
2019-11-14 8:09 ` Jan Kiszka
2019-11-18 13:58 ` Ralf Ramsauer
2020-01-21 18:08 ` Jan Kiszka
2020-01-21 18:25 ` Dave Hansen
2019-11-13 23:25 ` Pawan Gupta
2019-11-14 8:13 ` Jan Kiszka
2019-11-15 2:23 ` Pawan Gupta
2019-11-13 13:00 ` Jinpu Wang
2019-11-13 14:44 ` Paolo Bonzini
2019-11-13 18:10 ` Nadav Amit
2019-11-13 18:33 ` Paolo Bonzini
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