From: Peter Xu <peterx@redhat.com>
To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Sean Christopherson <sean.j.christopherson@intel.com>,
peterx@redhat.com, Andrew Jones <drjones@redhat.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: [PATCH v15 09/14] KVM: selftests: Sync uapi/linux/kvm.h to tools/
Date: Fri, 23 Oct 2020 14:33:53 -0400 [thread overview]
Message-ID: <20201023183358.50607-10-peterx@redhat.com> (raw)
In-Reply-To: <20201023183358.50607-1-peterx@redhat.com>
This will be needed to extend the kvm selftest program.
Signed-off-by: Peter Xu <peterx@redhat.com>
---
tools/include/uapi/linux/kvm.h | 78 +++++++++++++++++++++++++++++++++-
1 file changed, 76 insertions(+), 2 deletions(-)
diff --git a/tools/include/uapi/linux/kvm.h b/tools/include/uapi/linux/kvm.h
index f6d86033c4fa..de4c69a61524 100644
--- a/tools/include/uapi/linux/kvm.h
+++ b/tools/include/uapi/linux/kvm.h
@@ -248,6 +248,9 @@ struct kvm_hyperv_exit {
#define KVM_EXIT_IOAPIC_EOI 26
#define KVM_EXIT_HYPERV 27
#define KVM_EXIT_ARM_NISV 28
+#define KVM_EXIT_X86_RDMSR 29
+#define KVM_EXIT_X86_WRMSR 30
+#define KVM_EXIT_DIRTY_RING_FULL 31
/* For KVM_EXIT_INTERNAL_ERROR */
/* Emulate instruction failed. */
@@ -413,6 +416,17 @@ struct kvm_run {
__u64 esr_iss;
__u64 fault_ipa;
} arm_nisv;
+ /* KVM_EXIT_X86_RDMSR / KVM_EXIT_X86_WRMSR */
+ struct {
+ __u8 error; /* user -> kernel */
+ __u8 pad[7];
+#define KVM_MSR_EXIT_REASON_INVAL (1 << 0)
+#define KVM_MSR_EXIT_REASON_UNKNOWN (1 << 1)
+#define KVM_MSR_EXIT_REASON_FILTER (1 << 2)
+ __u32 reason; /* kernel -> user */
+ __u32 index; /* kernel -> user */
+ __u64 data; /* kernel <-> user */
+ } msr;
/* Fix the size of the union. */
char padding[256];
};
@@ -790,9 +804,10 @@ struct kvm_ppc_resize_hpt {
#define KVM_VM_PPC_HV 1
#define KVM_VM_PPC_PR 2
-/* on MIPS, 0 forces trap & emulate, 1 forces VZ ASE */
-#define KVM_VM_MIPS_TE 0
+/* on MIPS, 0 indicates auto, 1 forces VZ ASE, 2 forces trap & emulate */
+#define KVM_VM_MIPS_AUTO 0
#define KVM_VM_MIPS_VZ 1
+#define KVM_VM_MIPS_TE 2
#define KVM_S390_SIE_PAGE_OFFSET 1
@@ -1035,6 +1050,11 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_LAST_CPU 184
#define KVM_CAP_SMALLER_MAXPHYADDR 185
#define KVM_CAP_S390_DIAG318 186
+#define KVM_CAP_STEAL_TIME 187
+#define KVM_CAP_X86_USER_SPACE_MSR 188
+#define KVM_CAP_X86_MSR_FILTER 189
+#define KVM_CAP_ENFORCE_PV_FEATURE_CPUID 190
+#define KVM_CAP_DIRTY_LOG_RING 191
#ifdef KVM_CAP_IRQ_ROUTING
@@ -1536,6 +1556,12 @@ struct kvm_pv_cmd {
/* Available with KVM_CAP_S390_PROTECTED */
#define KVM_S390_PV_COMMAND _IOWR(KVMIO, 0xc5, struct kvm_pv_cmd)
+/* Available with KVM_CAP_X86_MSR_FILTER */
+#define KVM_X86_SET_MSR_FILTER _IOW(KVMIO, 0xc6, struct kvm_msr_filter)
+
+/* Available with KVM_CAP_DIRTY_LOG_RING */
+#define KVM_RESET_DIRTY_RINGS _IO(KVMIO, 0xc7)
+
/* Secure Encrypted Virtualization command */
enum sev_cmd_id {
/* Guest initialization commands */
@@ -1689,4 +1715,52 @@ struct kvm_hyperv_eventfd {
#define KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE (1 << 0)
#define KVM_DIRTY_LOG_INITIALLY_SET (1 << 1)
+/*
+ * Arch needs to define the macro after implementing the dirty ring
+ * feature. KVM_DIRTY_LOG_PAGE_OFFSET should be defined as the
+ * starting page offset of the dirty ring structures.
+ */
+#ifndef KVM_DIRTY_LOG_PAGE_OFFSET
+#define KVM_DIRTY_LOG_PAGE_OFFSET 0
+#endif
+
+/*
+ * KVM dirty GFN flags, defined as:
+ *
+ * |---------------+---------------+--------------|
+ * | bit 1 (reset) | bit 0 (dirty) | Status |
+ * |---------------+---------------+--------------|
+ * | 0 | 0 | Invalid GFN |
+ * | 0 | 1 | Dirty GFN |
+ * | 1 | X | GFN to reset |
+ * |---------------+---------------+--------------|
+ *
+ * Lifecycle of a dirty GFN goes like:
+ *
+ * dirtied collected reset
+ * 00 -----------> 01 -------------> 1X -------+
+ * ^ |
+ * | |
+ * +------------------------------------------+
+ *
+ * The userspace program is only responsible for the 01->1X state
+ * conversion (to collect dirty bits). Also, it must not skip any
+ * dirty bits so that dirty bits are always collected in sequence.
+ */
+#define KVM_DIRTY_GFN_F_DIRTY BIT(0)
+#define KVM_DIRTY_GFN_F_RESET BIT(1)
+#define KVM_DIRTY_GFN_F_MASK 0x3
+
+/*
+ * KVM dirty rings should be mapped at KVM_DIRTY_LOG_PAGE_OFFSET of
+ * per-vcpu mmaped regions as an array of struct kvm_dirty_gfn. The
+ * size of the gfn buffer is decided by the first argument when
+ * enabling KVM_CAP_DIRTY_LOG_RING.
+ */
+struct kvm_dirty_gfn {
+ __u32 flags;
+ __u32 slot;
+ __u64 offset;
+};
+
#endif /* __LINUX_KVM_H */
--
2.26.2
next prev parent reply other threads:[~2020-10-23 18:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-23 18:33 [PATCH v15 00/14] KVM: Dirty ring interface Peter Xu
2020-10-23 18:33 ` [PATCH v15 01/14] KVM: Documentation: Update entry for KVM_X86_SET_MSR_FILTER Peter Xu
2020-10-23 18:33 ` [PATCH v15 02/14] KVM: Documentation: Update entry for KVM_CAP_ENFORCE_PV_CPUID Peter Xu
2020-10-23 18:33 ` [PATCH v15 03/14] KVM: X86: Don't track dirty for KVM_SET_[TSS_ADDR|IDENTITY_MAP_ADDR] Peter Xu
2020-10-23 18:33 ` [PATCH v15 04/14] KVM: Pass in kvm pointer into mark_page_dirty_in_slot() Peter Xu
2020-10-23 18:33 ` [PATCH v15 05/14] KVM: X86: Implement ring-based dirty memory tracking Peter Xu
2020-10-23 18:33 ` [PATCH v15 06/14] KVM: Make dirty ring exclusive to dirty bitmap log Peter Xu
2020-10-23 18:33 ` [PATCH v15 07/14] KVM: Don't allocate dirty bitmap if dirty ring is enabled Peter Xu
2020-10-23 18:33 ` [PATCH v15 08/14] KVM: selftests: Always clear dirty bitmap after iteration Peter Xu
2020-10-23 18:33 ` Peter Xu [this message]
2020-10-23 18:33 ` [PATCH v15 10/14] KVM: selftests: Use a single binary for dirty/clear log test Peter Xu
2020-10-23 18:33 ` [PATCH v15 11/14] KVM: selftests: Introduce after_vcpu_run hook for dirty " Peter Xu
2020-10-23 18:33 ` [PATCH v15 12/14] KVM: selftests: Add dirty ring buffer test Peter Xu
2020-10-23 18:33 ` [PATCH v15 13/14] KVM: selftests: Let dirty_log_test async for dirty ring test Peter Xu
2020-10-23 18:33 ` [PATCH v15 14/14] KVM: selftests: Add "-c" parameter to dirty log test Peter Xu
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