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From: Babu Moger <babu.moger@amd.com>
To: pbonzini@redhat.com, vkuznets@redhat.com, wanpengli@tencent.com,
	sean.j.christopherson@intel.com, jmattson@google.com
Cc: kvm@vger.kernel.org, joro@8bytes.org, x86@kernel.org,
	linux-kernel@vger.kernel.org, mingo@redhat.com, bp@alien8.de,
	hpa@zytor.com, tglx@linutronix.de
Subject: [PATCH v3 03/11] KVM: SVM: Change intercept_dr to generic intercepts
Date: Tue, 28 Jul 2020 18:38:06 -0500	[thread overview]
Message-ID: <159597948692.12744.7037992839778140055.stgit@bmoger-ubuntu> (raw)
In-Reply-To: <159597929496.12744.14654593948763926416.stgit@bmoger-ubuntu>

Modify intercept_dr to generic intercepts in vmcb_control_area.
Use generic __set_intercept, __clr_intercept and __is_intercept
to set/clear/test the intercept_dr bits.

Signed-off-by: Babu Moger <babu.moger@amd.com>
---
 arch/x86/include/asm/svm.h |   36 ++++++++++++++++++------------------
 arch/x86/kvm/svm/nested.c  |    6 +-----
 arch/x86/kvm/svm/svm.c     |    4 ++--
 arch/x86/kvm/svm/svm.h     |   34 +++++++++++++++++-----------------
 4 files changed, 38 insertions(+), 42 deletions(-)

diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
index d4739f4eae63..ffc89d8e4fcb 100644
--- a/arch/x86/include/asm/svm.h
+++ b/arch/x86/include/asm/svm.h
@@ -11,6 +11,7 @@
 
 enum vector_offset {
 	CR_VECTOR = 0,
+	DR_VECTOR,
 	MAX_VECTORS,
 };
 
@@ -34,6 +35,23 @@ enum {
 	INTERCEPT_CR6_WRITE,
 	INTERCEPT_CR7_WRITE,
 	INTERCEPT_CR8_WRITE,
+	/* Byte offset 004h (Vector 1) */
+	INTERCEPT_DR0_READ = 32,
+	INTERCEPT_DR1_READ,
+	INTERCEPT_DR2_READ,
+	INTERCEPT_DR3_READ,
+	INTERCEPT_DR4_READ,
+	INTERCEPT_DR5_READ,
+	INTERCEPT_DR6_READ,
+	INTERCEPT_DR7_READ,
+	INTERCEPT_DR0_WRITE = 48,
+	INTERCEPT_DR1_WRITE,
+	INTERCEPT_DR2_WRITE,
+	INTERCEPT_DR3_WRITE,
+	INTERCEPT_DR4_WRITE,
+	INTERCEPT_DR5_WRITE,
+	INTERCEPT_DR6_WRITE,
+	INTERCEPT_DR7_WRITE,
 };
 
 enum {
@@ -89,7 +107,6 @@ enum {
 
 struct __attribute__ ((__packed__)) vmcb_control_area {
 	u32 intercepts[MAX_VECTORS];
-	u32 intercept_dr;
 	u32 intercept_exceptions;
 	u64 intercept;
 	u8 reserved_1[40];
@@ -271,23 +288,6 @@ struct __attribute__ ((__packed__)) vmcb {
 #define SVM_SELECTOR_READ_MASK SVM_SELECTOR_WRITE_MASK
 #define SVM_SELECTOR_CODE_MASK (1 << 3)
 
-#define INTERCEPT_DR0_READ	0
-#define INTERCEPT_DR1_READ	1
-#define INTERCEPT_DR2_READ	2
-#define INTERCEPT_DR3_READ	3
-#define INTERCEPT_DR4_READ	4
-#define INTERCEPT_DR5_READ	5
-#define INTERCEPT_DR6_READ	6
-#define INTERCEPT_DR7_READ	7
-#define INTERCEPT_DR0_WRITE	(16 + 0)
-#define INTERCEPT_DR1_WRITE	(16 + 1)
-#define INTERCEPT_DR2_WRITE	(16 + 2)
-#define INTERCEPT_DR3_WRITE	(16 + 3)
-#define INTERCEPT_DR4_WRITE	(16 + 4)
-#define INTERCEPT_DR5_WRITE	(16 + 5)
-#define INTERCEPT_DR6_WRITE	(16 + 6)
-#define INTERCEPT_DR7_WRITE	(16 + 7)
-
 #define SVM_EVTINJ_VEC_MASK 0xff
 
 #define SVM_EVTINJ_TYPE_SHIFT 8
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 46f5c82d9b45..71ca89afb2a3 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -121,7 +121,6 @@ void recalc_intercepts(struct vcpu_svm *svm)
 	for (i = 0; i < MAX_VECTORS; i++)
 		c->intercepts[i] = h->intercepts[i];
 
-	c->intercept_dr = h->intercept_dr;
 	c->intercept_exceptions = h->intercept_exceptions;
 	c->intercept = h->intercept;
 
@@ -144,7 +143,6 @@ void recalc_intercepts(struct vcpu_svm *svm)
 	for (i = 0; i < MAX_VECTORS; i++)
 		c->intercepts[i] |= g->intercepts[i];
 
-	c->intercept_dr |= g->intercept_dr;
 	c->intercept_exceptions |= g->intercept_exceptions;
 	c->intercept |= g->intercept;
 }
@@ -157,7 +155,6 @@ static void copy_vmcb_control_area(struct vmcb_control_area *dst,
 	for (i = 0; i < MAX_VECTORS; i++)
 		dst->intercepts[i] = from->intercepts[i];
 
-	dst->intercept_dr         = from->intercept_dr;
 	dst->intercept_exceptions = from->intercept_exceptions;
 	dst->intercept            = from->intercept;
 	dst->iopm_base_pa         = from->iopm_base_pa;
@@ -717,8 +714,7 @@ static int nested_svm_intercept(struct vcpu_svm *svm)
 		break;
 	}
 	case SVM_EXIT_READ_DR0 ... SVM_EXIT_WRITE_DR7: {
-		u32 bit = 1U << (exit_code - SVM_EXIT_READ_DR0);
-		if (svm->nested.ctl.intercept_dr & bit)
+		if (__is_intercept(&svm->nested.ctl.intercepts, exit_code))
 			vmexit = NESTED_EXIT_DONE;
 		break;
 	}
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 334bda8b31c1..6d95025938d8 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -2799,8 +2799,8 @@ static void dump_vmcb(struct kvm_vcpu *vcpu)
 	pr_err("VMCB Control Area:\n");
 	pr_err("%-20s%04x\n", "cr_read:", control->intercepts[CR_VECTOR] & 0xffff);
 	pr_err("%-20s%04x\n", "cr_write:", control->intercepts[CR_VECTOR] >> 16);
-	pr_err("%-20s%04x\n", "dr_read:", control->intercept_dr & 0xffff);
-	pr_err("%-20s%04x\n", "dr_write:", control->intercept_dr >> 16);
+	pr_err("%-20s%04x\n", "dr_read:", control->intercepts[DR_VECTOR] & 0xffff);
+	pr_err("%-20s%04x\n", "dr_write:", control->intercepts[DR_VECTOR] >> 16);
 	pr_err("%-20s%08x\n", "exceptions:", control->intercept_exceptions);
 	pr_err("%-20s%016llx\n", "intercepts:", control->intercept);
 	pr_err("%-20s%d\n", "pause filter count:", control->pause_filter_count);
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 89d1d91d5bc6..f33a50f92b92 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -261,22 +261,22 @@ static inline void set_dr_intercepts(struct vcpu_svm *svm)
 {
 	struct vmcb *vmcb = get_host_vmcb(svm);
 
-	vmcb->control.intercept_dr = (1 << INTERCEPT_DR0_READ)
-		| (1 << INTERCEPT_DR1_READ)
-		| (1 << INTERCEPT_DR2_READ)
-		| (1 << INTERCEPT_DR3_READ)
-		| (1 << INTERCEPT_DR4_READ)
-		| (1 << INTERCEPT_DR5_READ)
-		| (1 << INTERCEPT_DR6_READ)
-		| (1 << INTERCEPT_DR7_READ)
-		| (1 << INTERCEPT_DR0_WRITE)
-		| (1 << INTERCEPT_DR1_WRITE)
-		| (1 << INTERCEPT_DR2_WRITE)
-		| (1 << INTERCEPT_DR3_WRITE)
-		| (1 << INTERCEPT_DR4_WRITE)
-		| (1 << INTERCEPT_DR5_WRITE)
-		| (1 << INTERCEPT_DR6_WRITE)
-		| (1 << INTERCEPT_DR7_WRITE);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR0_READ);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR1_READ);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR2_READ);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR3_READ);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR4_READ);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR5_READ);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR6_READ);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR7_READ);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR0_WRITE);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR1_WRITE);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR2_WRITE);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR3_WRITE);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR4_WRITE);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR5_WRITE);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR6_WRITE);
+	__set_intercept(&vmcb->control.intercepts, INTERCEPT_DR7_WRITE);
 
 	recalc_intercepts(svm);
 }
@@ -285,7 +285,7 @@ static inline void clr_dr_intercepts(struct vcpu_svm *svm)
 {
 	struct vmcb *vmcb = get_host_vmcb(svm);
 
-	vmcb->control.intercept_dr = 0;
+	vmcb->control.intercepts[DR_VECTOR] = 0;
 
 	recalc_intercepts(svm);
 }


  parent reply	other threads:[~2020-07-28 23:38 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-28 23:37 [PATCH v3 00/11] SVM cleanup and INVPCID support for the AMD guests Babu Moger
2020-07-28 23:37 ` [PATCH v3 01/11] KVM: SVM: Introduce __set_intercept, __clr_intercept and __is_intercept Babu Moger
2020-07-28 23:50   ` Jim Mattson
2020-07-29 23:09   ` Paolo Bonzini
2020-07-30 16:34     ` Babu Moger
2020-07-28 23:38 ` [PATCH v3 02/11] KVM: SVM: Change intercept_cr to generic intercepts Babu Moger
2020-07-28 23:56   ` Jim Mattson
2020-07-29 16:08     ` Babu Moger
2020-07-29 23:08       ` Paolo Bonzini
2020-07-28 23:38 ` Babu Moger [this message]
2020-07-28 23:59   ` [PATCH v3 03/11] KVM: SVM: Change intercept_dr " Jim Mattson
2020-07-29 16:15     ` Babu Moger
2020-07-29 23:12     ` Paolo Bonzini
2020-07-30 16:38       ` Babu Moger
2020-07-30 22:41         ` Babu Moger
2020-07-30 22:49           ` Paolo Bonzini
2020-07-28 23:38 ` [PATCH v3 04/11] KVM: SVM: Modify intercept_exceptions " Babu Moger
2020-07-29 20:47   ` Jim Mattson
2020-07-29 21:31     ` Babu Moger
2020-07-28 23:38 ` [PATCH v3 05/11] KVM: SVM: Modify 64 bit intercept field to two 32 bit vectors Babu Moger
2020-07-29 21:06   ` Jim Mattson
2020-07-29 21:31     ` Babu Moger
2020-07-28 23:38 ` [PATCH v3 06/11] KVM: SVM: Add new intercept vector in vmcb_control_area Babu Moger
2020-07-29 21:23   ` Jim Mattson
2020-07-29 22:19     ` Babu Moger
2020-07-28 23:38 ` [PATCH v3 07/11] KVM: nSVM: Cleanup nested_state data structure Babu Moger
2020-07-29  0:02   ` Jim Mattson
2020-07-28 23:38 ` [PATCH v3 08/11] KVM: SVM: Remove set_cr_intercept, clr_cr_intercept and is_cr_intercept Babu Moger
2020-07-29  0:01   ` Jim Mattson
2020-07-28 23:38 ` [PATCH v3 09/11] KVM: SVM: Remove set_exception_intercept and clr_exception_intercept Babu Moger
2020-07-29 22:17   ` Jim Mattson
2020-07-28 23:38 ` [PATCH v3 10/11] KVM: X86: Move handling of INVPCID types to x86 Babu Moger
2020-07-29 22:25   ` Jim Mattson
2020-07-28 23:38 ` [PATCH v3 11/11] KVM:SVM: Enable INVPCID feature on AMD Babu Moger
2020-07-29 23:01   ` Jim Mattson
2020-07-30 16:32     ` Babu Moger
2020-07-29  0:09 ` [PATCH v3 00/11] SVM cleanup and INVPCID support for the AMD guests Jim Mattson

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