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[PATCH RFC 7/9] KVM: Cache kvm slot dirty bitmap size
From: |
Peter Xu |
Subject: |
[PATCH RFC 7/9] KVM: Cache kvm slot dirty bitmap size |
Date: |
Wed, 5 Feb 2020 09:17:47 -0500 |
Cache it too because we'll reference it more frequently in the future.
Signed-off-by: Peter Xu <address@hidden>
---
accel/kvm/kvm-all.c | 1 +
include/sysemu/kvm_int.h | 1 +
2 files changed, 2 insertions(+)
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index f81e7a644b..ea7b8f7ca5 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -548,6 +548,7 @@ static void kvm_slot_init_dirty_bitmap(KVMSlot *mem)
hwaddr bitmap_size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS),
/*HOST_LONG_BITS*/ 64) / 8;
mem->dirty_bmap = g_malloc0(bitmap_size);
+ mem->dirty_bmap_size = bitmap_size;
}
/* Sync dirty bitmap from kernel to KVMSlot.dirty_bmap */
diff --git a/include/sysemu/kvm_int.h b/include/sysemu/kvm_int.h
index 1a19bfef80..71c9946ecf 100644
--- a/include/sysemu/kvm_int.h
+++ b/include/sysemu/kvm_int.h
@@ -23,6 +23,7 @@ typedef struct KVMSlot
int old_flags;
/* Dirty bitmap cache for the slot */
unsigned long *dirty_bmap;
+ unsigned long dirty_bmap_size;
/* Cache of the address space ID */
int as_id;
/* Cache of the offset in ram address space */
--
2.24.1
- [PATCH RFC 0/9] KVM: Dirty ring support (QEMU part), Peter Xu, 2020/02/05
- [PATCH RFC 1/9] KVM: Fixup kvm_log_clear_one_slot() ioctl return check, Peter Xu, 2020/02/05
- [PATCH RFC 3/9] memory: Introduce log_sync_global() to memory listener, Peter Xu, 2020/02/05
- [PATCH RFC 2/9] linux-headers: Update, Peter Xu, 2020/02/05
- [PATCH RFC 4/9] KVM: Create the KVMSlot dirty bitmap on flag changes, Peter Xu, 2020/02/05
- [PATCH RFC 6/9] KVM: Provide helper to sync dirty bitmap from slot to ramblock, Peter Xu, 2020/02/05
- [PATCH RFC 7/9] KVM: Cache kvm slot dirty bitmap size,
Peter Xu <=
- [PATCH RFC 5/9] KVM: Provide helper to get kvm dirty log, Peter Xu, 2020/02/05
- [PATCH RFC 8/9] KVM: Add dirty-ring-size property, Peter Xu, 2020/02/05
- [PATCH RFC 9/9] KVM: Dirty ring support, Peter Xu, 2020/02/05
- Re: [PATCH RFC 0/9] KVM: Dirty ring support (QEMU part), no-reply, 2020/02/05