[x86] KVM: VMX: Expose SSBD properly to guests.
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@ -493,6 +493,7 @@ linux (4.16.11-1) UNRELEASED; urgency=medium
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* kbuild: use -fmacro-prefix-map to make __FILE__ a relative path
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* Bump ABI to 2
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* [rt] Update to 4.16.8-rt3
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* [x86] KVM: VMX: Expose SSBD properly to guests.
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[ Salvatore Bonaccorso ]
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* [rt] Update to 4.16.7-rt1 and reenable
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@ -0,0 +1,35 @@
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From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Date: Mon, 21 May 2018 17:54:49 -0400
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Subject: KVM: VMX: Expose SSBD properly to guests.
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Origin: https://www.spinics.net/lists/kvm/msg169259.html
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The X86_FEATURE_SSBD is an synthetic CPU feature - that is
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it bit location has no relevance to the real CPUID 0x7.EBX[31]
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bit position. For that we need the new CPU feature name.
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Fixes: 52817587e706 ("x86/cpufeatures: Disentangle SSBD enumeration")
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CC: Paolo Bonzini <pbonzini@redhat.com>
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Cc: "Radim Krčmář" <rkrcmar@redhat.com>
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Cc: Thomas Gleixner <tglx@linutronix.de>
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Cc: Ingo Molnar <mingo@kernel.org>
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Cc: "H. Peter Anvin" <hpa@zytor.com>
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Cc: stable@vger.kernel.org
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Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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---
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arch/x86/kvm/cpuid.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/arch/x86/kvm/cpuid.c
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+++ b/arch/x86/kvm/cpuid.c
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@@ -402,8 +402,8 @@ static inline int __do_cpuid_ent(struct
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/* cpuid 7.0.edx*/
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const u32 kvm_cpuid_7_0_edx_x86_features =
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- F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) | F(SSBD) |
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- F(ARCH_CAPABILITIES);
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+ F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) |
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+ F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES);
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/* all calls to cpuid_count() should be made on the same cpu */
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get_cpu();
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@ -142,6 +142,7 @@ features/all/lockdown/arm64-add-kernel-config-option-to-lock-down-when.patch
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debian/i386-686-pae-pci-set-pci-nobios-by-default.patch
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bugfix/all/xfs-enhance-dinode-verifier.patch
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bugfix/all/xfs-set-format-back-to-extents-if-xfs_bmap_extents_t.patch
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bugfix/x86/kvm-vmx-expose-ssbd-properly-to-guests.patch
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# Fix exported symbol versions
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bugfix/all/module-disable-matching-missing-version-crc.patch
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