[PATCH v8 19/40] KVM: SVM: Update the SEV-ES save area mapping

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>,
	<linux-coco@lists.linux.dev>, <linux-mm@kvack.org>
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>,
	"Andy Lutomirski" <luto@kernel.org>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Sergio Lopez <slp@redhat.com>, Peter Gonda <pgonda@google.com>,
	"Peter Zijlstra" <peterz@infradead.org>,
	Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
	David Rientjes <rientjes@google.com>,
	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>,
	<tony.luck@intel.com>, <marcorr@google.com>,
	<sathyanarayanan.kuppuswamy@linux.intel.com>,
	Brijesh Singh <brijesh.singh@amd.com>
Subject: [PATCH v8 19/40] KVM: SVM: Update the SEV-ES save area mapping
Date: Fri, 10 Dec 2021 09:43:11 -0600	[thread overview]
Message-ID: <20211210154332.11526-20-brijesh.singh@amd.com> (raw)
In-Reply-To: <20211210154332.11526-1-brijesh.singh@amd.com>

From: Tom Lendacky <thomas.lendacky@amd.com>

This is the final step in defining the multiple save areas to keep them
separate and ensuring proper operation amongst the different types of
guests. Update the SEV-ES/SEV-SNP save area to match the APM. This save
area will be used for the upcoming SEV-SNP AP Creation NAE event support.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
 arch/x86/include/asm/svm.h | 66 +++++++++++++++++++++++++++++---------
 1 file changed, 50 insertions(+), 16 deletions(-)

diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
index 5ff1fa364a31..7d90321e7775 100644
--- a/arch/x86/include/asm/svm.h
+++ b/arch/x86/include/asm/svm.h
@@ -290,7 +290,13 @@ struct sev_es_save_area {
 	struct vmcb_seg ldtr;
 	struct vmcb_seg idtr;
 	struct vmcb_seg tr;
-	u8 reserved_1[43];
+	u64 vmpl0_ssp;
+	u64 vmpl1_ssp;
+	u64 vmpl2_ssp;
+	u64 vmpl3_ssp;
+	u64 u_cet;
+	u8 reserved_1[2];
+	u8 vmpl;
 	u8 cpl;
 	u8 reserved_2[4];
 	u64 efer;
@@ -303,9 +309,19 @@ struct sev_es_save_area {
 	u64 dr6;
 	u64 rflags;
 	u64 rip;
-	u8 reserved_4[88];
+	u64 dr0;
+	u64 dr1;
+	u64 dr2;
+	u64 dr3;
+	u64 dr0_addr_mask;
+	u64 dr1_addr_mask;
+	u64 dr2_addr_mask;
+	u64 dr3_addr_mask;
+	u8 reserved_4[24];
 	u64 rsp;
-	u8 reserved_5[24];
+	u64 s_cet;
+	u64 ssp;
+	u64 isst_addr;
 	u64 rax;
 	u64 star;
 	u64 lstar;
@@ -316,7 +332,7 @@ struct sev_es_save_area {
 	u64 sysenter_esp;
 	u64 sysenter_eip;
 	u64 cr2;
-	u8 reserved_6[32];
+	u8 reserved_5[32];
 	u64 g_pat;
 	u64 dbgctl;
 	u64 br_from;
@@ -325,12 +341,12 @@ struct sev_es_save_area {
 	u64 last_excp_to;
 	u8 reserved_7[80];
 	u32 pkru;
-	u8 reserved_9[20];
-	u64 reserved_10;	/* rax already available at 0x01f8 */
+	u8 reserved_8[20];
+	u64 reserved_9;		/* rax already available at 0x01f8 */
 	u64 rcx;
 	u64 rdx;
 	u64 rbx;
-	u64 reserved_11;	/* rsp already available at 0x01d8 */
+	u64 reserved_10;	/* rsp already available at 0x01d8 */
 	u64 rbp;
 	u64 rsi;
 	u64 rdi;
@@ -342,16 +358,34 @@ struct sev_es_save_area {
 	u64 r13;
 	u64 r14;
 	u64 r15;
-	u8 reserved_12[16];
-	u64 sw_exit_code;
-	u64 sw_exit_info_1;
-	u64 sw_exit_info_2;
-	u64 sw_scratch;
+	u8 reserved_11[16];
+	u64 guest_exit_info_1;
+	u64 guest_exit_info_2;
+	u64 guest_exit_int_info;
+	u64 guest_nrip;
 	u64 sev_features;
-	u8 reserved_13[48];
+	u64 vintr_ctrl;
+	u64 guest_exit_code;
+	u64 virtual_tom;
+	u64 tlb_id;
+	u64 pcpu_id;
+	u64 event_inj;
 	u64 xcr0;
-	u8 valid_bitmap[16];
-	u64 x87_state_gpa;
+	u8 reserved_12[16];
+
+	/* Floating point area */
+	u64 x87_dp;
+	u32 mxcsr;
+	u16 x87_ftw;
+	u16 x87_fsw;
+	u16 x87_fcw;
+	u16 x87_fop;
+	u16 x87_ds;
+	u16 x87_cs;
+	u64 x87_rip;
+	u8 fpreg_x87[80];
+	u8 fpreg_xmm[256];
+	u8 fpreg_ymm[256];
 } __packed;
 
 struct ghcb_save_area {
@@ -410,7 +444,7 @@ struct ghcb {
 
 #define EXPECTED_VMCB_SAVE_AREA_SIZE		740
 #define EXPECTED_GHCB_SAVE_AREA_SIZE		1032
-#define EXPECTED_SEV_ES_SAVE_AREA_SIZE		1032
+#define EXPECTED_SEV_ES_SAVE_AREA_SIZE		1648
 #define EXPECTED_VMCB_CONTROL_AREA_SIZE		1024
 #define EXPECTED_GHCB_SIZE			PAGE_SIZE
 
-- 
2.25.1

