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035dbe67 FG |
1 | From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
2 | From: Tom Lendacky <thomas.lendacky@amd.com> | |
3 | Date: Wed, 20 Dec 2017 10:55:47 +0000 | |
4 | Subject: [PATCH] KVM: SVM: Do not intercept new speculative control MSRs | |
5 | MIME-Version: 1.0 | |
6 | Content-Type: text/plain; charset=UTF-8 | |
7 | Content-Transfer-Encoding: 8bit | |
8 | ||
9 | CVE-2017-5753 | |
10 | CVE-2017-5715 | |
11 | ||
12 | Allow guest access to the speculative control MSRs without being | |
13 | intercepted. | |
14 | ||
15 | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | |
16 | Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> | |
17 | Signed-off-by: Andy Whitcroft <apw@canonical.com> | |
18 | Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com> | |
19 | (cherry picked from commit ccaa77a824fd3e21f0b8ae6b5a66fc1ee7e35b14) | |
20 | Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com> | |
21 | --- | |
22 | arch/x86/kvm/svm.c | 2 ++ | |
23 | 1 file changed, 2 insertions(+) | |
24 | ||
25 | diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c | |
26 | index 92cd94d51e1f..94adf6becc2e 100644 | |
27 | --- a/arch/x86/kvm/svm.c | |
28 | +++ b/arch/x86/kvm/svm.c | |
29 | @@ -248,6 +248,8 @@ static const struct svm_direct_access_msrs { | |
30 | { .index = MSR_CSTAR, .always = true }, | |
31 | { .index = MSR_SYSCALL_MASK, .always = true }, | |
32 | #endif | |
33 | + { .index = MSR_IA32_SPEC_CTRL, .always = true }, | |
34 | + { .index = MSR_IA32_PRED_CMD, .always = true }, | |
35 | { .index = MSR_IA32_LASTBRANCHFROMIP, .always = false }, | |
36 | { .index = MSR_IA32_LASTBRANCHTOIP, .always = false }, | |
37 | { .index = MSR_IA32_LASTINTFROMIP, .always = false }, | |
38 | -- | |
39 | 2.14.2 | |
40 |