From: Joerg Roedel <joro@8bytes.org>
To: x86@kernel.org
Cc: Joerg Roedel <joro@8bytes.org>, Joerg Roedel <jroedel@suse.de>,
Eric Biederman <ebiederm@xmission.com>,
kexec@lists.infradead.org, hpa@zytor.com,
Andy Lutomirski <luto@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Jiri Slaby <jslaby@suse.cz>,
Dan Williams <dan.j.williams@intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Juergen Gross <jgross@suse.com>,
Kees Cook <keescook@chromium.org>,
David Rientjes <rientjes@google.com>,
Cfir Cohen <cfir@google.com>, Erdem Aktas <erdemaktas@google.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mike Stunes <mstunes@vmware.com>,
Sean Christopherson <seanjc@google.com>,
Martin Radev <martin.b.radev@gmail.com>,
Arvind Sankar <nivedita@alum.mit.edu>,
linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, virtualization@lists.linux-foundation.org
Subject: [PATCH v3 03/10] x86/sev: Set GHCB data structure version
Date: Thu, 27 Jan 2022 11:10:37 +0100 [thread overview]
Message-ID: <20220127101044.13803-4-joro@8bytes.org> (raw)
In-Reply-To: <20220127101044.13803-1-joro@8bytes.org>
From: Joerg Roedel <jroedel@suse.de>
It turned out that the GHCB->protocol field does not declare the
version of the guest-hypervisor communication protocol, but rather the
version of the GHCB data structure. Reflect that in the define used to
set the protocol field.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
arch/x86/include/asm/sev.h | 3 +++
arch/x86/kernel/sev-shared.c | 2 +-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h
index 17b75f6ee11a..09eb2cc6f54f 100644
--- a/arch/x86/include/asm/sev.h
+++ b/arch/x86/include/asm/sev.h
@@ -16,6 +16,9 @@
#define GHCB_PROTOCOL_MAX 2ULL
#define GHCB_DEFAULT_USAGE 0ULL
+/* Version of the GHCB data structure */
+#define GHCB_VERSION 1
+
#define VMGEXIT() { asm volatile("rep; vmmcall\n\r"); }
enum es_result {
diff --git a/arch/x86/kernel/sev-shared.c b/arch/x86/kernel/sev-shared.c
index 60ca7dd64d64..4468150a42bb 100644
--- a/arch/x86/kernel/sev-shared.c
+++ b/arch/x86/kernel/sev-shared.c
@@ -162,7 +162,7 @@ enum es_result sev_es_ghcb_hv_call(struct ghcb *ghcb, bool set_ghcb_msr,
u64 exit_info_1, u64 exit_info_2)
{
/* Fill in protocol and format specifiers */
- ghcb->protocol_version = GHCB_PROTOCOL_MAX;
+ ghcb->protocol_version = GHCB_VERSION;
ghcb->ghcb_usage = GHCB_DEFAULT_USAGE;
ghcb_set_sw_exit_code(ghcb, exit_code);
--
2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro@8bytes.org>
To: x86@kernel.org
Cc: kvm@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
virtualization@lists.linux-foundation.org,
Arvind Sankar <nivedita@alum.mit.edu>,
hpa@zytor.com, Jiri Slaby <jslaby@suse.cz>,
Joerg Roedel <joro@8bytes.org>,
David Rientjes <rientjes@google.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Martin Radev <martin.b.radev@gmail.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Joerg Roedel <jroedel@suse.de>, Kees Cook <keescook@chromium.org>,
Cfir Cohen <cfir@google.com>,
linux-coco@lists.linux.dev, Andy Lutomirski <luto@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Juergen Gross <jgross@suse.com>, Mike Stunes <mstunes@vmware.com>,
Sean Christopherson <seanjc@google.com>,
kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
Eric Biederman <ebiederm@xmission.com>,
Erdem Aktas <erdemaktas@google.com>
Subject: [PATCH v3 03/10] x86/sev: Set GHCB data structure version
Date: Thu, 27 Jan 2022 11:10:37 +0100 [thread overview]
Message-ID: <20220127101044.13803-4-joro@8bytes.org> (raw)
In-Reply-To: <20220127101044.13803-1-joro@8bytes.org>
From: Joerg Roedel <jroedel@suse.de>
It turned out that the GHCB->protocol field does not declare the
version of the guest-hypervisor communication protocol, but rather the
version of the GHCB data structure. Reflect that in the define used to
set the protocol field.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
arch/x86/include/asm/sev.h | 3 +++
arch/x86/kernel/sev-shared.c | 2 +-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h
index 17b75f6ee11a..09eb2cc6f54f 100644
--- a/arch/x86/include/asm/sev.h
+++ b/arch/x86/include/asm/sev.h
@@ -16,6 +16,9 @@
#define GHCB_PROTOCOL_MAX 2ULL
#define GHCB_DEFAULT_USAGE 0ULL
+/* Version of the GHCB data structure */
+#define GHCB_VERSION 1
+
#define VMGEXIT() { asm volatile("rep; vmmcall\n\r"); }
enum es_result {
diff --git a/arch/x86/kernel/sev-shared.c b/arch/x86/kernel/sev-shared.c
index 60ca7dd64d64..4468150a42bb 100644
--- a/arch/x86/kernel/sev-shared.c
+++ b/arch/x86/kernel/sev-shared.c
@@ -162,7 +162,7 @@ enum es_result sev_es_ghcb_hv_call(struct ghcb *ghcb, bool set_ghcb_msr,
u64 exit_info_1, u64 exit_info_2)
{
/* Fill in protocol and format specifiers */
- ghcb->protocol_version = GHCB_PROTOCOL_MAX;
+ ghcb->protocol_version = GHCB_VERSION;
ghcb->ghcb_usage = GHCB_DEFAULT_USAGE;
ghcb_set_sw_exit_code(ghcb, exit_code);
--
2.34.1
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Virtualization@lists.linux-foundation.org
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next prev parent reply other threads:[~2022-01-27 10:17 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-27 10:10 [PATCH v3 00/10] x86/sev: KEXEC/KDUMP support for SEV-ES guests Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel
2022-01-27 10:10 ` [PATCH v3 01/10] x86/kexec/64: Disable kexec when SEV-ES is active Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel
2022-01-27 10:10 ` [PATCH v3 02/10] x86/sev: Save and print negotiated GHCB protocol version Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel [this message]
2022-01-27 10:10 ` [PATCH v3 03/10] x86/sev: Set GHCB data structure version Joerg Roedel
2022-01-27 10:10 ` [PATCH v3 04/10] x86/sev: Cache AP Jump Table Address Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel
2022-02-07 22:03 ` Sean Christopherson
2022-02-07 22:03 ` Sean Christopherson
2022-01-27 10:10 ` [PATCH v3 05/10] x86/sev: Setup code to park APs in the AP Jump Table Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel
2022-02-07 22:11 ` Sean Christopherson
2022-02-07 22:11 ` Sean Christopherson
2022-01-27 10:10 ` [PATCH v3 06/10] x86/sev: Park APs on AP Jump Table with GHCB protocol version 2 Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel
2022-01-27 10:10 ` [PATCH v3 07/10] x86/sev: Use AP Jump Table blob to stop CPU Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel
2022-01-27 10:10 ` [PATCH v3 08/10] x86/sev: Add MMIO handling support to boot/compressed/ code Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel
2022-01-27 10:10 ` [PATCH v3 09/10] x86/sev: Handle CLFLUSH MMIO events Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel
2022-01-27 10:10 ` [PATCH v3 10/10] x86/kexec/64: Support kexec under SEV-ES with AP Jump Table Blob Joerg Roedel
2022-01-27 10:10 ` Joerg Roedel
2022-04-29 9:06 ` [PATCH v3 00/10] x86/sev: KEXEC/KDUMP support for SEV-ES guests Tao Liu
2022-04-29 9:06 ` Tao Liu
2022-04-29 13:08 ` Tom Lendacky
2022-04-29 13:08 ` Tom Lendacky via Virtualization
2022-04-29 13:08 ` Tom Lendacky
2022-07-29 10:28 ` Tao Liu
2022-07-29 10:28 ` Tao Liu
2023-06-04 13:07 ` Baoquan He
2023-06-04 13:07 ` Baoquan He
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