From: Takahiro Itazuri <itazur@amazon.com>
To: <kvm@vger.kernel.org>, <x86@kernel.org>
Cc: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
<linux-kernel@vger.kernel.org>,
"Takahiro Itazuri" <zulinx86@gmail.com>,
Takahiro Itazuri <itazur@amazon.com>
Subject: [PATCH 2/2] KVM: x86: Propagate AMD-specific IBRS related bits
Date: Mon, 27 Feb 2023 21:05:26 +0000 [thread overview]
Message-ID: <20230227210526.83182-3-itazur@amazon.com> (raw)
In-Reply-To: <20230227210526.83182-1-itazur@amazon.com>
Add AMD-specific IBRS related bits to be propagated to guests.
Signed-off-by: Takahiro Itazuri <itazur@amazon.com>
---
arch/x86/kvm/cpuid.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 596061c1610e..829ca79076df 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -704,8 +704,9 @@ void kvm_set_cpu_caps(void)
kvm_cpu_cap_mask(CPUID_8000_0008_EBX,
F(CLZERO) | F(XSAVEERPTR) |
F(WBNOINVD) | F(AMD_IBPB) | F(AMD_IBRS) | F(AMD_SSBD) | F(VIRT_SSBD) |
- F(AMD_SSB_NO) | F(AMD_STIBP) | F(AMD_STIBP_ALWAYS_ON) |
- __feature_bit(KVM_X86_FEATURE_AMD_PSFD)
+ F(AMD_SSB_NO) | F(AMD_STIBP) | F(X86_FEATURE_AMD_IBRS_ALWAYS_ON) |
+ F(AMD_STIBP_ALWAYS_ON) | F(X86_FEATURE_AMD_IBRS_PREFERRED) |
+ F(X86_FEATURE_AMD_IBRS_SAME_MODE) | __feature_bit(KVM_X86_FEATURE_AMD_PSFD)
);
/*
--
2.38.0
next prev parent reply other threads:[~2023-02-27 21:15 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-27 21:05 [PATCH 0/2] KVM: x86: Propagate AMD-specific IBRS bits to guests Takahiro Itazuri
2023-02-27 21:05 ` [PATCH 1/2] x86/cpufeatures: Add AMD-specific IBRS bits Takahiro Itazuri
2023-02-27 21:05 ` Takahiro Itazuri [this message]
2023-02-27 21:40 ` [PATCH 0/2] KVM: x86: Propagate AMD-specific IBRS bits to guests Borislav Petkov
2023-02-28 18:13 ` Takahiro Itazuri
2023-02-28 19:24 ` Borislav Petkov
2023-02-28 19:41 ` Takahiro Itazuri
2023-02-28 20:45 ` Borislav Petkov
2023-02-28 22:24 ` Takahiro Itazuri
2023-02-28 22:50 ` Borislav Petkov
2023-03-06 21:16 ` Sean Christopherson
2023-03-06 21:25 ` Paolo Bonzini
2023-03-06 21:44 ` Borislav Petkov
2023-03-06 21:47 ` Paolo Bonzini
2023-03-06 21:54 ` Borislav Petkov
2023-03-07 18:49 ` Sean Christopherson
2023-03-07 18:58 ` Borislav Petkov
2023-03-07 19:28 ` Sean Christopherson
2023-03-07 19:55 ` Borislav Petkov
2023-03-06 21:31 ` Paolo Bonzini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230227210526.83182-3-itazur@amazon.com \
--to=itazur@amazon.com \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=pbonzini@redhat.com \
--cc=seanjc@google.com \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
--cc=zulinx86@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox