From: Michael Roth <michael.roth@amd.com>
To: qemu-devel@nongnu.org
Cc: "Connor Kuehl" <ckuehl@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"Michael S . Tsirkin" <mst@redhat.com>,
"James Bottomley" <jejb@linux.ibm.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
"Tom Lendacky" <thomas.lendacky@amd.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Dov Murik" <dovmurik@linux.ibm.com>,
"David Gibson" <david@gibson.dropbear.id.au>,
"Daniel P . Berrangé" <berrange@redhat.com>,
kvm@vger.kernel.org, "Eduardo Habkost" <ehabkost@redhat.com>,
"Brijesh Singh" <brijesh.singh@amd.com>,
"Markus Armbruster" <armbru@redhat.com>,
"Eric Blake" <eblake@redhat.com>
Subject: [RFC PATCH v2 08/12] target/i386: set SEV-SNP CPUID bit when SNP enabled
Date: Thu, 26 Aug 2021 17:26:23 -0500 [thread overview]
Message-ID: <20210826222627.3556-9-michael.roth@amd.com> (raw)
In-Reply-To: <20210826222627.3556-1-michael.roth@amd.com>
SNP guests will rely on this bit to determine certain feature support.
Signed-off-by: Michael Roth <michael.roth@amd.com>
---
target/i386/cpu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 97e250e876..f0b441f692 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5619,6 +5619,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
case 0x8000001F:
*eax = sev_enabled() ? 0x2 : 0;
*eax |= sev_es_enabled() ? 0x8 : 0;
+ *eax |= sev_snp_enabled() ? 0x10 : 0;
*ebx = sev_get_cbit_position();
*ebx |= sev_get_reduced_phys_bits() << 6;
*ecx = 0;
--
2.25.1
next prev parent reply other threads:[~2021-08-26 22:27 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-26 22:26 [RFC PATCH v2 00/12] Add AMD Secure Nested Paging (SEV-SNP) support Michael Roth
2021-08-26 22:26 ` [RFC PATCH v2 01/12] i386/sev: introduce "sev-common" type to encapsulate common SEV state Michael Roth
2021-09-01 14:18 ` Markus Armbruster
2021-09-03 15:11 ` Michael Roth
2021-08-26 22:26 ` [RFC PATCH v2 02/12] linux-header: add the SNP specific command Michael Roth
2021-09-03 20:36 ` Dov Murik
2021-09-03 20:36 ` Dov Murik
2021-09-07 14:27 ` Michael Roth
2021-08-26 22:26 ` [RFC PATCH v2 03/12] i386/sev: introduce 'sev-snp-guest' object Michael Roth
2021-09-01 14:29 ` Markus Armbruster
2021-09-03 15:15 ` Michael Roth
2021-09-03 21:12 ` Dov Murik
2021-09-03 21:12 ` Dov Murik
2021-09-07 14:20 ` Michael Roth
2021-08-26 22:26 ` [RFC PATCH v2 04/12] i386/sev: initialize SNP context Michael Roth
2021-09-05 7:07 ` Dov Murik
2021-09-05 7:07 ` Dov Murik
2021-09-05 13:58 ` Brijesh Singh
2021-09-05 17:09 ` Dov Murik
2021-09-05 17:09 ` Dov Murik
2021-09-05 9:19 ` Dov Murik
2021-09-05 9:19 ` Dov Murik
2021-09-05 14:05 ` Brijesh Singh
2021-09-05 17:03 ` Dov Murik
2021-09-05 17:03 ` Dov Murik
2021-08-26 22:26 ` [RFC PATCH v2 05/12] i386/sev: add the SNP launch start context Michael Roth
2021-08-26 22:26 ` [RFC PATCH v2 06/12] i386/sev: add support to encrypt BIOS when SEV-SNP is enabled Michael Roth
2021-08-26 22:26 ` [RFC PATCH v2 07/12] i386/sev: populate secrets and cpuid page and finalize the SNP launch Michael Roth
2021-09-03 20:24 ` Dov Murik
2021-09-03 20:24 ` Dov Murik
2021-09-07 16:18 ` Michael Roth
2021-08-26 22:26 ` Michael Roth [this message]
2021-08-26 22:26 ` [RFC PATCH v2 09/12] target/i386: allow versioned CPUs to specify new cache_info Michael Roth
2021-08-26 22:26 ` [RFC PATCH v2 10/12] target/i386: add new EPYC CPU versions with updated cache_info Michael Roth
2021-08-26 22:26 ` [RFC PATCH v2 11/12] i386/sev: sev-snp: add support for CPUID validation Michael Roth
2021-09-05 10:02 ` Dov Murik
2021-09-05 10:02 ` Dov Murik
2021-09-07 16:50 ` Michael Roth
2021-09-07 17:44 ` Dov Murik
2021-09-07 17:44 ` Dov Murik
2021-08-26 22:26 ` [RFC PATCH v2 12/12] i386/sev: update query-sev QAPI format to handle SEV-SNP Michael Roth
2021-09-01 14:14 ` Markus Armbruster
2021-09-03 15:13 ` Michael Roth
2021-09-03 15:30 ` Daniel P. Berrangé
2021-09-03 15:30 ` Daniel P. Berrangé
2021-09-03 15:43 ` Michael Roth
2021-09-03 15:43 ` Michael Roth via
2021-09-03 15:58 ` Daniel P. Berrangé
2021-09-03 15:58 ` Daniel P. Berrangé
2021-09-03 16:01 ` Daniel P. Berrangé
2021-09-03 16:01 ` Daniel P. Berrangé
2021-09-04 5:41 ` Markus Armbruster
2021-09-07 11:52 ` Dr. David Alan Gilbert
2021-09-07 11:52 ` Dr. David Alan Gilbert
2021-09-07 14:33 ` Michael Roth
2021-09-07 14:33 ` Michael Roth via
2021-09-03 15:27 ` Daniel P. Berrangé
2021-09-03 15:27 ` Daniel P. Berrangé
2021-11-16 9:23 ` [RFC PATCH v2 00/12] Add AMD Secure Nested Paging (SEV-SNP) support Daniel P. Berrangé
2021-11-16 9:23 ` Daniel P. Berrangé
2021-11-16 11:54 ` Brijesh Singh
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