From: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
To: <seanjc@google.com>, <pbonzini@redhat.com>, <kvm@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <bp@alien8.de>,
<tglx@linutronix.de>, <mingo@redhat.com>,
<dave.hansen@linux.intel.com>, <Thomas.Lendacky@amd.com>,
<nikunj@amd.com>, <Santosh.Shukla@amd.com>,
<Vasant.Hegde@amd.com>, <Suravee.Suthikulpanit@amd.com>,
<David.Kaplan@amd.com>, <x86@kernel.org>, <hpa@zytor.com>,
<peterz@infradead.org>, <huibo.wang@amd.com>,
<naveen.rao@amd.com>, <binbin.wu@linux.intel.com>,
<isaku.yamahata@intel.com>
Subject: [RFC PATCH 04/19] x86/cpufeatures: Add Secure AVIC CPU Feature
Date: Fri, 28 Feb 2025 14:21:00 +0530 [thread overview]
Message-ID: <20250228085115.105648-5-Neeraj.Upadhyay@amd.com> (raw)
In-Reply-To: <20250228085115.105648-1-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
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 2ba5c11941ee..a63ca1b34b3a 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -452,6 +452,7 @@
#define X86_FEATURE_V_TSC_AUX (19*32+ 9) /* Virtual TSC_AUX */
#define X86_FEATURE_SME_COHERENT (19*32+10) /* AMD hardware-enforced cache coherency */
#define X86_FEATURE_DEBUG_SWAP (19*32+14) /* "debug_swap" AMD SEV-ES full debug state swap 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:[~2025-02-28 9:01 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-28 8:50 [RFC PATCH 00/19] AMD: Add Secure AVIC KVM Support Neeraj Upadhyay
2025-02-28 8:50 ` [RFC PATCH 01/19] KVM: TDX: Add support for find pending IRQ in a protected local APIC Neeraj Upadhyay
2025-02-28 8:50 ` [RFC PATCH 02/19] KVM: x86: Assume timer IRQ was injected if APIC state is protected Neeraj Upadhyay
2025-02-28 8:50 ` [RFC PATCH 03/19] KVM: x86: Convert guest_apic_protected bool to an enum type Neeraj Upadhyay
2025-02-28 8:51 ` Neeraj Upadhyay [this message]
2025-02-28 8:51 ` [RFC PATCH 05/19] KVM: SVM: Add support for Secure AVIC capability in KVM Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 06/19] KVM: SVM: Initialize apic protected state for SAVIC guests Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 07/19] KVM: SEV: Do not intercept SECURE_AVIC_CONTROL MSR Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 08/19] KVM: SVM/SEV/X86: Secure AVIC: Add support to inject interrupts Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 09/19] KVM: SVM/SEV/X86: Secure AVIC: Add hypervisor side IPI Delivery Support Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 10/19] KVM: SVM: Secure AVIC: Do not inject "Exceptions" for Secure AVIC Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 11/19] KVM: SVM/SEV: Do not intercept exceptions for Secure AVIC guest Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 12/19] KVM: SVM/SEV: Secure AVIC: Set VGIF in VMSA area Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 13/19] KVM: SVM/SEV: Secure AVIC: Enable NMI support Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 14/19] KVM: SVM/SEV: Add SVM_VMGEXIT_SECURE_AVIC GHCB protocol event handling Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 15/19] KVM: x86: Secure AVIC: Indicate APIC is enabled by guest SW _always_ Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 16/19] KVM: x86: Secure AVIC: Add IOAPIC EOI support for level interrupts Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 17/19] KVM: x86/ioapic: Disable RTC_GSI EOI tracking for protected APIC Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 18/19] X86: SVM: Check injected vectors before waiting for timer expiry Neeraj Upadhyay
2025-02-28 8:51 ` [RFC PATCH 19/19] KVM: SVM/SEV: Allow creating VMs with Secure AVIC enabled Neeraj Upadhyay
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