From: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
To: <kvm@vger.kernel.org>, <seanjc@google.com>, <pbonzini@redhat.com>
Cc: <linux-kernel@vger.kernel.org>, <Thomas.Lendacky@amd.com>,
<nikunj@amd.com>, <Santosh.Shukla@amd.com>,
<Vasant.Hegde@amd.com>, <Suravee.Suthikulpanit@amd.com>,
<bp@alien8.de>, <David.Kaplan@amd.com>, <huibo.wang@amd.com>,
<naveen.rao@amd.com>, <tiala@microsoft.com>
Subject: [RFC PATCH v2 02/17] x86/cpufeatures: Add Secure AVIC CPU feature
Date: Tue, 23 Sep 2025 10:33:02 +0530 [thread overview]
Message-ID: <20250923050317.205482-3-Neeraj.Upadhyay@amd.com> (raw)
In-Reply-To: <20250923050317.205482-1-Neeraj.Upadhyay@amd.com>
Add CPU feature detection for Secure AVIC. The Secure AVIC feature
provides hardware acceleration for performance sensitive APIC accesses
and support for managing guest-owned APIC state for the SEV-SNP guests.
Signed-off-by: Kishon Vijay Abraham I <kvijayab@amd.com>
Signed-off-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
---
arch/x86/include/asm/cpufeatures.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index 06fc0479a23f..d855825b1b9e 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -449,6 +449,7 @@
#define X86_FEATURE_DEBUG_SWAP (19*32+14) /* "debug_swap" SEV-ES full debug state swap support */
#define X86_FEATURE_RMPREAD (19*32+21) /* RMPREAD instruction */
#define X86_FEATURE_SEGMENTED_RMP (19*32+23) /* Segmented RMP support */
+#define X86_FEATURE_SECURE_AVIC (19*32+26) /* Secure AVIC */
#define X86_FEATURE_ALLOWED_SEV_FEATURES (19*32+27) /* Allowed SEV Features */
#define X86_FEATURE_SVSM (19*32+28) /* "svsm" SVSM present */
#define X86_FEATURE_HV_INUSE_WR_ALLOWED (19*32+30) /* Allow Write to in-use hypervisor-owned pages */
--
2.34.1
next prev parent reply other threads:[~2025-09-23 5:04 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-23 5:03 [RFC PATCH v2 00/17] AMD: Add Secure AVIC KVM Support Neeraj Upadhyay
2025-09-23 5:03 ` [RFC PATCH v2 01/17] KVM: x86/lapic: Differentiate protected APIC interrupt mechanisms Neeraj Upadhyay
2025-09-23 5:03 ` Neeraj Upadhyay [this message]
2025-09-23 5:03 ` [RFC PATCH v2 03/17] KVM: SVM: Add support for Secure AVIC capability in KVM Neeraj Upadhyay
2025-09-23 5:03 ` [RFC PATCH v2 04/17] KVM: SVM: Set guest APIC protection flags for Secure AVIC Neeraj Upadhyay
2025-09-23 5:03 ` [RFC PATCH v2 05/17] KVM: SVM: Do not intercept SECURE_AVIC_CONTROL MSR for SAVIC guests Neeraj Upadhyay
2025-09-23 13:55 ` Tom Lendacky
2025-09-25 5:16 ` Upadhyay, Neeraj
2025-09-25 13:54 ` Tom Lendacky
2025-09-23 5:03 ` [RFC PATCH v2 06/17] KVM: SVM: Implement interrupt injection for Secure AVIC Neeraj Upadhyay
2025-09-23 14:47 ` Tom Lendacky
2025-09-23 5:03 ` [RFC PATCH v2 07/17] KVM: SVM: Add IPI Delivery Support " Neeraj Upadhyay
2025-09-23 5:03 ` [RFC PATCH v2 08/17] KVM: SVM: Do not inject exception " Neeraj Upadhyay
2025-09-23 15:00 ` Tom Lendacky
2025-09-23 5:03 ` [RFC PATCH v2 09/17] KVM: SVM: Do not intercept exceptions for Secure AVIC guests Neeraj Upadhyay
2025-09-23 15:15 ` Tom Lendacky
2025-09-23 5:03 ` [RFC PATCH v2 10/17] KVM: SVM: Set VGIF in VMSA area " Neeraj Upadhyay
2025-09-23 15:16 ` Tom Lendacky
2025-09-23 5:03 ` [RFC PATCH v2 11/17] KVM: SVM: Enable NMI support " Neeraj Upadhyay
2025-09-23 15:25 ` Tom Lendacky
2025-09-23 5:03 ` [RFC PATCH v2 12/17] KVM: SVM: Add VMGEXIT handler for Secure AVIC backing page Neeraj Upadhyay
2025-09-23 16:02 ` Tom Lendacky
2025-09-23 5:03 ` [RFC PATCH v2 13/17] KVM: SVM: Add IOAPIC EOI support for Secure AVIC guests Neeraj Upadhyay
2025-09-23 16:15 ` Tom Lendacky
2025-09-23 5:03 ` [RFC PATCH v2 14/17] KVM: x86/ioapic: Disable RTC EOI tracking for protected APIC guests Neeraj Upadhyay
2025-09-23 16:23 ` Tom Lendacky
2025-09-23 5:03 ` [RFC PATCH v2 15/17] KVM: SVM: Check injected timers for Secure AVIC guests Neeraj Upadhyay
2025-09-23 16:32 ` Tom Lendacky
2025-09-23 5:03 ` [RFC PATCH v2 16/17] KVM: x86/cpuid: Disable paravirt APIC features for protected APIC Neeraj Upadhyay
2025-09-23 5:03 ` [RFC PATCH v2 17/17] KVM: SVM: Advertise Secure AVIC support for SNP guests Neeraj Upadhyay
2025-09-23 10:02 ` [syzbot ci] Re: AMD: Add Secure AVIC KVM Support syzbot ci
2025-09-23 10:17 ` Upadhyay, Neeraj
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=20250923050317.205482-3-Neeraj.Upadhyay@amd.com \
--to=neeraj.upadhyay@amd.com \
--cc=David.Kaplan@amd.com \
--cc=Santosh.Shukla@amd.com \
--cc=Suravee.Suthikulpanit@amd.com \
--cc=Thomas.Lendacky@amd.com \
--cc=Vasant.Hegde@amd.com \
--cc=bp@alien8.de \
--cc=huibo.wang@amd.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=naveen.rao@amd.com \
--cc=nikunj@amd.com \
--cc=pbonzini@redhat.com \
--cc=seanjc@google.com \
--cc=tiala@microsoft.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