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From: Hikaru Nishida <hikalium@chromium.org>
To: linux-kernel@vger.kernel.org, dme@dme.org, tglx@linutronix.de,
	mlevitsk@redhat.com
Cc: suleiman@google.com, Hikaru Nishida <hikalium@chromium.org>,
	Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@alien8.de>,
	"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
	Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
	John Stultz <john.stultz@linaro.org>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Sean Christopherson <seanjc@google.com>,
	Stephen Boyd <sboyd@kernel.org>, Steve Wahl <steve.wahl@hpe.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	kvm@vger.kernel.org, x86@kernel.org
Subject: [v2 PATCH 2/4] x86/kvm: Add definitions for virtual suspend time injection
Date: Fri,  6 Aug 2021 19:07:08 +0900	[thread overview]
Message-ID: <20210806190607.v2.2.I6e8f979820f45e38370aa19180a33a8c046d0fa9@changeid> (raw)
In-Reply-To: <20210806100710.2425336-1-hikalium@chromium.org>

Add definitions of MSR, KVM_FEATURE bit, IRQ and a structure called
kvm_suspend_time that are used by later patchs to support the
virtual suspend time injection mechanism.

Signed-off-by: Hikaru Nishida <hikalium@chromium.org>
---

 arch/x86/include/asm/irq_vectors.h   | 7 ++++++-
 arch/x86/include/uapi/asm/kvm_para.h | 6 ++++++
 kernel/time/timekeeping.c            | 1 +
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h
index 43dcb9284208..6785054080c8 100644
--- a/arch/x86/include/asm/irq_vectors.h
+++ b/arch/x86/include/asm/irq_vectors.h
@@ -104,7 +104,12 @@
 #define HYPERV_STIMER0_VECTOR		0xed
 #endif
 
-#define LOCAL_TIMER_VECTOR		0xec
+#if defined(CONFIG_KVM_VIRT_SUSPEND_TIMING) || \
+	defined(CONFIG_KVM_VIRT_SUSPEND_TIMING_GUEST)
+#define VIRT_SUSPEND_TIMING_VECTOR	0xec
+#endif
+
+#define LOCAL_TIMER_VECTOR		0xeb
 
 #define NR_VECTORS			 256
 
diff --git a/arch/x86/include/uapi/asm/kvm_para.h b/arch/x86/include/uapi/asm/kvm_para.h
index 5146bbab84d4..ccea4e344f46 100644
--- a/arch/x86/include/uapi/asm/kvm_para.h
+++ b/arch/x86/include/uapi/asm/kvm_para.h
@@ -35,6 +35,7 @@
 #define KVM_FEATURE_MSI_EXT_DEST_ID	15
 #define KVM_FEATURE_HC_MAP_GPA_RANGE	16
 #define KVM_FEATURE_MIGRATION_CONTROL	17
+#define KVM_FEATURE_HOST_SUSPEND_TIME	18
 
 #define KVM_HINTS_REALTIME      0
 
@@ -57,6 +58,7 @@
 #define MSR_KVM_ASYNC_PF_INT	0x4b564d06
 #define MSR_KVM_ASYNC_PF_ACK	0x4b564d07
 #define MSR_KVM_MIGRATION_CONTROL	0x4b564d08
+#define MSR_KVM_HOST_SUSPEND_TIME      0x4b564d09
 
 struct kvm_steal_time {
 	__u64 steal;
@@ -79,6 +81,10 @@ struct kvm_clock_pairing {
 	__u32 pad[9];
 };
 
+struct kvm_suspend_time {
+	__u64   suspend_time_ns;
+};
+
 #define KVM_STEAL_ALIGNMENT_BITS 5
 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1)))
 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 8a364aa9881a..233ceb6cce1f 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -22,6 +22,7 @@
 #include <linux/pvclock_gtod.h>
 #include <linux/compiler.h>
 #include <linux/audit.h>
+#include <linux/kvm_host.h>
 
 #include "tick-internal.h"
 #include "ntp_internal.h"
-- 
2.32.0.605.g8dce9f2422-goog


  parent reply	other threads:[~2021-08-06 10:08 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-06 10:07 [v2 PATCH 0/4] x86/kvm: Virtual suspend time injection support Hikaru Nishida
2021-08-06 10:07 ` [v2 PATCH 1/4] x86/kvm: Reserve KVM_FEATURE_HOST_SUSPEND_TIME and MSR_KVM_HOST_SUSPEND_TIME Hikaru Nishida
2021-08-06 10:07 ` Hikaru Nishida [this message]
2021-08-10 15:14   ` [v2 PATCH 2/4] x86/kvm: Add definitions for virtual suspend time injection Thomas Gleixner
2021-08-13 18:36   ` Guenter Roeck
2021-08-06 10:07 ` [v2 PATCH 3/4] x86/kvm: Add host side support " Hikaru Nishida
2021-08-10 15:21   ` Thomas Gleixner
2021-08-10 15:24   ` Thomas Gleixner
2021-08-14  7:22   ` Paolo Bonzini
2021-08-18  9:32     ` Vitaly Kuznetsov
2021-08-18 20:49       ` Paolo Bonzini
2021-08-06 10:07 ` [v2 PATCH 4/4] x86/kvm: Add guest " Hikaru Nishida
2021-08-10 15:48   ` Thomas Gleixner

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