From: Brijesh Singh <brijesh.singh@amd.com>
To: <x86@kernel.org>, <linux-kernel@vger.kernel.org>,
<kvm@vger.kernel.org>, <linux-efi@vger.kernel.org>,
<platform-driver-x86@vger.kernel.org>,
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Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Joerg Roedel <jroedel@suse.de>,
Tom Lendacky <thomas.lendacky@amd.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Ard Biesheuvel <ardb@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
"Vitaly Kuznetsov" <vkuznets@redhat.com>,
Jim Mattson <jmattson@google.com>,
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Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
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Dov Murik <dovmurik@linux.ibm.com>,
Tobin Feldman-Fitzthum <tobin@ibm.com>,
Borislav Petkov <bp@alien8.de>,
Michael Roth <michael.roth@amd.com>,
Vlastimil Babka <vbabka@suse.cz>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Andi Kleen <ak@linux.intel.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
<brijesh.ksingh@gmail.com>, <tony.luck@intel.com>,
<marcorr@google.com>,
<sathyanarayanan.kuppuswamy@linux.intel.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Venu Busireddy <venu.busireddy@oracle.com>
Subject: [PATCH v10 01/45] KVM: SVM: Define sev_features and vmpl field in the VMSA
Date: Wed, 9 Feb 2022 12:09:55 -0600 [thread overview]
Message-ID: <20220209181039.1262882-2-brijesh.singh@amd.com> (raw)
In-Reply-To: <20220209181039.1262882-1-brijesh.singh@amd.com>
The hypervisor uses the sev_features field (offset 3B0h) in the Save State
Area to control the SEV-SNP guest features such as SNPActive, vTOM,
ReflectVC etc. An SEV-SNP guest can read the SEV_FEATURES fields through
the SEV_STATUS MSR.
While at it, update the dump_vmcb() to log the VMPL level.
See APM2 Table 15-34 and B-4 for more details.
Reviewed-by: Venu Busireddy <venu.busireddy@oracle.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
arch/x86/include/asm/svm.h | 6 ++++--
arch/x86/kvm/svm/svm.c | 4 ++--
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
index b00dbc5fac2b..7c9cf4f3c164 100644
--- a/arch/x86/include/asm/svm.h
+++ b/arch/x86/include/asm/svm.h
@@ -238,7 +238,8 @@ struct vmcb_save_area {
struct vmcb_seg ldtr;
struct vmcb_seg idtr;
struct vmcb_seg tr;
- u8 reserved_1[43];
+ u8 reserved_1[42];
+ u8 vmpl;
u8 cpl;
u8 reserved_2[4];
u64 efer;
@@ -303,7 +304,8 @@ struct vmcb_save_area {
u64 sw_exit_info_1;
u64 sw_exit_info_2;
u64 sw_scratch;
- u8 reserved_11[56];
+ u64 sev_features;
+ u8 reserved_11[48];
u64 xcr0;
u8 valid_bitmap[16];
u64 x87_state_gpa;
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index a290efb272ad..cb447eecb9ac 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -3095,8 +3095,8 @@ static void dump_vmcb(struct kvm_vcpu *vcpu)
"tr:",
save01->tr.selector, save01->tr.attrib,
save01->tr.limit, save01->tr.base);
- pr_err("cpl: %d efer: %016llx\n",
- save->cpl, save->efer);
+ pr_err("vmpl: %d cpl: %d efer: %016llx\n",
+ save->vmpl, save->cpl, save->efer);
pr_err("%-15s %016llx %-13s %016llx\n",
"cr0:", save->cr0, "cr2:", save->cr2);
pr_err("%-15s %016llx %-13s %016llx\n",
--
2.25.1
next prev parent reply other threads:[~2022-02-09 18:11 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-09 18:09 [PATCH v10 00/45] Add AMD Secure Nested Paging (SEV-SNP) Guest Support Brijesh Singh
2022-02-09 18:09 ` Brijesh Singh [this message]
2022-02-09 18:09 ` [PATCH v10 02/45] KVM: SVM: Create a separate mapping for the SEV-ES save area Brijesh Singh
2022-02-09 18:09 ` [PATCH v10 03/45] KVM: SVM: Create a separate mapping for the GHCB " Brijesh Singh
2022-02-09 18:09 ` [PATCH v10 04/45] KVM: SVM: Update the SEV-ES save area mapping Brijesh Singh
2022-02-09 18:09 ` [PATCH v10 05/45] x86/boot: Introduce helpers for MSR reads/writes Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 06/45] x86/boot: Use MSR read/write helpers instead of inline assembly Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 07/45] x86/compressed/64: Detect/setup SEV/SME features earlier in boot Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 08/45] x86/sev: " Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 09/45] x86/mm: Extend cc_attr to include AMD SEV-SNP Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 10/45] x86/sev: Define the Linux specific guest termination reasons Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 11/45] x86/sev: Save the negotiated GHCB version Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 12/45] x86/sev: Check SEV-SNP features support Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 13/45] x86/sev: Add a helper for the PVALIDATE instruction Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 14/45] x86/sev: Check the vmpl level Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 15/45] x86/compressed: Add helper for validating pages in the decompression stage Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 16/45] x86/compressed: Register GHCB memory when SEV-SNP is active Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 17/45] x86/sev: " Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 18/45] x86/sev: Add helper for validating pages in early enc attribute changes Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 19/45] x86/kernel: Make the .bss..decrypted section shared in RMP table Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 20/45] x86/kernel: Validate ROM memory before accessing when SEV-SNP is active Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 21/45] x86/mm: Add support to validate memory when changing C-bit Brijesh Singh
2022-02-10 16:48 ` Borislav Petkov
2022-02-11 14:55 ` Borislav Petkov
2022-02-11 17:27 ` Brijesh Singh
2022-02-13 12:15 ` Borislav Petkov
2022-02-13 14:50 ` Tom Lendacky
2022-02-13 17:21 ` Borislav Petkov
2022-02-15 12:43 ` Kirill A. Shutemov
2022-02-15 12:54 ` Borislav Petkov
2022-02-15 13:15 ` Kirill A. Shutemov
2022-02-15 14:41 ` Borislav Petkov
2022-02-16 13:32 ` Borislav Petkov
2022-02-09 18:10 ` [PATCH v10 22/45] x86/sev: Use SEV-SNP AP creation to start secondary CPUs Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 23/45] x86/head/64: Re-enable stack protection Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 24/45] x86/compressed/acpi: Move EFI detection to helper Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 25/45] x86/compressed/acpi: Move EFI system table lookup " Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 26/45] x86/compressed/acpi: Move EFI config " Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 27/45] x86/compressed/acpi: Move EFI vendor " Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 28/45] x86/compressed/acpi: Move EFI kexec handling into common code Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 29/45] x86/boot: Add Confidential Computing type to setup_data Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 30/45] KVM: x86: Move lookup of indexed CPUID leafs to helper Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 31/45] x86/sev: Move MSR-based VMGEXITs for CPUID " Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 32/45] x86/compressed/64: Add support for SEV-SNP CPUID table in #VC handlers Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 33/45] x86/boot: Add a pointer to Confidential Computing blob in bootparams Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 34/45] x86/compressed: Add SEV-SNP feature detection/setup Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 35/45] x86/compressed: Use firmware-validated CPUID leaves for SEV-SNP guests Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 36/45] x86/compressed: Export and rename add_identity_map() Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 37/45] x86/compressed/64: Add identity mapping for Confidential Computing blob Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 38/45] x86/sev: Add SEV-SNP feature detection/setup Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 39/45] x86/sev: Use firmware-validated CPUID for SEV-SNP guests Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 40/45] x86/sev: Provide support for SNP guest request NAEs Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 41/45] x86/sev: Register SEV-SNP guest request platform device Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 42/45] virt: Add SEV-SNP guest driver Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 43/45] virt: sevguest: Add support to derive key Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 44/45] virt: sevguest: Add support to get extended report Brijesh Singh
2022-02-09 18:10 ` [PATCH v10 45/45] virt: sevguest: Add documentation for SEV-SNP CPUID Enforcement Brijesh Singh
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