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From: Peter Xu <peterx@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Peter Xu <peterx@redhat.com>, Yan Zhao <yan.y.zhao@intel.com>,
	Jason Wang <jasowang@redhat.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
	Christophe de Dinechin <dinechin@redhat.com>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Kevin Tian <kevin.tian@intel.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Sean Christopherson <sean.j.christopherson@intel.com>
Subject: [PATCH v6 09/14] KVM: selftests: Sync uapi/linux/kvm.h to tools/
Date: Mon,  9 Mar 2020 18:25:14 -0400	[thread overview]
Message-ID: <20200309222514.345553-1-peterx@redhat.com> (raw)
In-Reply-To: <20200309214424.330363-1-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 | 44 ++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/tools/include/uapi/linux/kvm.h b/tools/include/uapi/linux/kvm.h
index 4b95f9a31a2f..50bf39d24f17 100644
--- a/tools/include/uapi/linux/kvm.h
+++ b/tools/include/uapi/linux/kvm.h
@@ -236,6 +236,7 @@ struct kvm_hyperv_exit {
 #define KVM_EXIT_IOAPIC_EOI       26
 #define KVM_EXIT_HYPERV           27
 #define KVM_EXIT_ARM_NISV         28
+#define KVM_EXIT_DIRTY_RING_FULL  29
 
 /* For KVM_EXIT_INTERNAL_ERROR */
 /* Emulate instruction failed. */
@@ -1010,6 +1011,7 @@ struct kvm_ppc_resize_hpt {
 #define KVM_CAP_ARM_NISV_TO_USER 177
 #define KVM_CAP_ARM_INJECT_EXT_DABT 178
 #define KVM_CAP_S390_VCPU_RESETS 179
+#define KVM_CAP_DIRTY_LOG_RING 180
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
@@ -1478,6 +1480,9 @@ struct kvm_enc_region {
 #define KVM_S390_NORMAL_RESET	_IO(KVMIO,   0xc3)
 #define KVM_S390_CLEAR_RESET	_IO(KVMIO,   0xc4)
 
+/* Available with KVM_CAP_DIRTY_LOG_RING */
+#define KVM_RESET_DIRTY_RINGS     _IO(KVMIO, 0xc5)
+
 /* Secure Encrypted Virtualization command */
 enum sev_cmd_id {
 	/* Guest initialization commands */
@@ -1628,4 +1633,43 @@ struct kvm_hyperv_eventfd {
 #define KVM_HYPERV_CONN_ID_MASK		0x00ffffff
 #define KVM_HYPERV_EVENTFD_DEASSIGN	(1 << 0)
 
+/*
+ * 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 */
-- 
2.24.1


  parent reply	other threads:[~2020-03-09 22:25 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-09 21:44 [PATCH v6 00/14] KVM: Dirty ring interface Peter Xu
2020-03-09 21:44 ` [PATCH v6 01/14] KVM: X86: Change parameter for fast_page_fault tracepoint Peter Xu
2020-03-09 21:44 ` [PATCH v6 02/14] KVM: Cache as_id in kvm_memory_slot Peter Xu
2020-03-10 14:48   ` Sean Christopherson
2020-03-11 15:48     ` Peter Xu
2020-03-09 21:44 ` [PATCH v6 03/14] KVM: X86: Don't track dirty for KVM_SET_[TSS_ADDR|IDENTITY_MAP_ADDR] Peter Xu
2020-03-10 15:06   ` Sean Christopherson
2020-03-11 16:01     ` Peter Xu
2020-03-11 16:11       ` Sean Christopherson
2020-03-11  1:10   ` kbuild test robot
2020-03-11 16:39     ` Peter Xu
2020-03-11 17:09       ` Sean Christopherson
2020-03-18 20:04         ` Peter Xu
2020-03-09 21:44 ` [PATCH v6 04/14] KVM: Pass in kvm pointer into mark_page_dirty_in_slot() Peter Xu
2020-03-09 21:44 ` [PATCH v6 05/14] KVM: X86: Implement ring-based dirty memory tracking Peter Xu
2020-03-09 22:24 ` [PATCH v6 06/14] KVM: Make dirty ring exclusive to dirty bitmap log Peter Xu
2020-03-09 22:25 ` [PATCH v6 07/14] KVM: Don't allocate dirty bitmap if dirty ring is enabled Peter Xu
2020-03-09 22:25 ` [PATCH v6 08/14] KVM: selftests: Always clear dirty bitmap after iteration Peter Xu
2020-03-09 22:25 ` Peter Xu [this message]
2020-03-09 22:25 ` [PATCH v6 10/14] KVM: selftests: Use a single binary for dirty/clear log test Peter Xu
2020-03-10  8:10   ` Andrew Jones
2020-03-11 17:43     ` Peter Xu
2020-03-11 18:47       ` Andrew Jones
2020-03-09 22:25 ` [PATCH v6 11/14] KVM: selftests: Introduce after_vcpu_run hook for dirty " Peter Xu
2020-03-09 22:25 ` [PATCH v6 12/14] KVM: selftests: Add dirty ring buffer test Peter Xu
2020-03-10  8:18   ` Andrew Jones
2020-03-11 17:44     ` Peter Xu
2020-03-09 22:25 ` [PATCH v6 13/14] KVM: selftests: Let dirty_log_test async for dirty ring test Peter Xu
2020-03-10  8:27   ` Andrew Jones
2020-03-11 17:45     ` Peter Xu
2020-03-09 22:25 ` [PATCH v6 14/14] KVM: selftests: Add "-c" parameter to dirty log test Peter Xu

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