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[PATCH RFC v3 09/11] KVM: Cache kvm slot dirty bitmap size
From: |
Peter Xu |
Subject: |
[PATCH RFC v3 09/11] KVM: Cache kvm slot dirty bitmap size |
Date: |
Sat, 23 May 2020 19:20:33 -0400 |
Cache it too because we'll reference it more frequently in the future.
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
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 f7c8e6bebe..b9aaa7912c 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -561,6 +561,7 @@ 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 4a35d04478..b4d2886e26 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 */
--
2.26.2
- Re: [PATCH RFC v3 01/11] linux-headers: Update, (continued)
[PATCH RFC v3 03/11] KVM: Fixup kvm_log_clear_one_slot() ioctl return check, Peter Xu, 2020/05/23
[PATCH RFC v3 02/11] memory: Introduce log_sync_global() to memory listener, Peter Xu, 2020/05/23
[PATCH RFC v3 04/11] KVM: Use a big lock to replace per-kml slots_lock, Peter Xu, 2020/05/23
[PATCH RFC v3 05/11] KVM: Create the KVMSlot dirty bitmap on flag changes, Peter Xu, 2020/05/23
[PATCH RFC v3 06/11] KVM: Provide helper to get kvm dirty log, Peter Xu, 2020/05/23
[PATCH RFC v3 07/11] KVM: Provide helper to sync dirty bitmap from slot to ramblock, Peter Xu, 2020/05/23
[PATCH RFC v3 08/11] KVM: Simplify dirty log sync in kvm_set_phys_mem, Peter Xu, 2020/05/23
[PATCH RFC v3 09/11] KVM: Cache kvm slot dirty bitmap size,
Peter Xu <=
[PATCH RFC v3 10/11] KVM: Add dirty-gfn-count property, Peter Xu, 2020/05/23
[PATCH RFC v3 11/11] KVM: Dirty ring support, Peter Xu, 2020/05/23
Re: [PATCH RFC v3 00/11] KVM: Dirty ring support (QEMU part), Peter Xu, 2020/05/24
Re: [PATCH RFC v3 00/11] KVM: Dirty ring support (QEMU part), Peter Xu, 2020/05/26