This patch introduces a new flag KVM_IOEVENTFD_FLAG_DATAREAD
in ioeventfd to enable receiving a notification when a
guest reads from registered PIO/MMIO address.
Signed-off-by: Amey Narkhede <ameynarkhede03@xxxxxxxxx>
---
linux-headers/linux/kvm.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index 43580c767c..3e71d15a53 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -695,6 +695,7 @@ struct kvm_guest_debug {
enum {
kvm_ioeventfd_flag_nr_datamatch,
+ kvm_ioeventfd_flag_nr_dataread,
kvm_ioeventfd_flag_nr_pio,
kvm_ioeventfd_flag_nr_deassign,
kvm_ioeventfd_flag_nr_virtio_ccw_notify,
@@ -703,6 +704,7 @@ enum {
};
#define KVM_IOEVENTFD_FLAG_DATAMATCH (1 << kvm_ioeventfd_flag_nr_datamatch)
+#define KVM_IOEVENTFD_FLAG_DATAREAD (1 << kvm_ioeventfd_flag_nr_dataread)
#define KVM_IOEVENTFD_FLAG_PIO (1 << kvm_ioeventfd_flag_nr_pio)
#define KVM_IOEVENTFD_FLAG_DEASSIGN (1 << kvm_ioeventfd_flag_nr_deassign)
#define KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY \
@@ -712,11 +714,12 @@ enum {
struct kvm_ioeventfd {
__u64 datamatch;
+ __u64 dataread;
__u64 addr; /* legal pio/mmio address */
__u32 len; /* 1, 2, 4, or 8 bytes; or 0 to ignore length */
__s32 fd;
__u32 flags;
- __u8 pad[36];
+ __u8 pad[28];
};
#define KVM_X86_DISABLE_EXITS_MWAIT (1 << 0)
--
2.28.0
