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[PATCH v4 10/13] KVM: Cache kvm slot dirty bitmap size
From: |
Peter Xu |
Subject: |
[PATCH v4 10/13] KVM: Cache kvm slot dirty bitmap size |
Date: |
Fri, 8 Jan 2021 11:50:47 -0500 |
Cache it too because we'll reference it more frequently in the future.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
---
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 9cb06ec4d1..5339de04cf 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -630,6 +630,7 @@ 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 e0afdd02fd..7472ddb1a7 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
- [PATCH v4 00/13] KVM: Dirty ring support (QEMU part), Peter Xu, 2021/01/08
- [PATCH v4 02/13] Update linux headers to 5.11-rc2, Peter Xu, 2021/01/08
- [PATCH v4 03/13] memory: Introduce log_sync_global() to memory listener, Peter Xu, 2021/01/08
- [PATCH v4 01/13] update-linux-headers: Include const.h, Peter Xu, 2021/01/08
- [PATCH v4 04/13] KVM: Fixup kvm_log_clear_one_slot() ioctl return check, Peter Xu, 2021/01/08
- [PATCH v4 05/13] KVM: Use a big lock to replace per-kml slots_lock, Peter Xu, 2021/01/08
- [PATCH v4 06/13] KVM: Create the KVMSlot dirty bitmap on flag changes, Peter Xu, 2021/01/08
- [PATCH v4 07/13] KVM: Provide helper to get kvm dirty log, Peter Xu, 2021/01/08
- [PATCH v4 08/13] KVM: Provide helper to sync dirty bitmap from slot to ramblock, Peter Xu, 2021/01/08
- [PATCH v4 09/13] KVM: Simplify dirty log sync in kvm_set_phys_mem, Peter Xu, 2021/01/08
- [PATCH v4 10/13] KVM: Cache kvm slot dirty bitmap size,
Peter Xu <=
- [PATCH v4 11/13] KVM: Add dirty-gfn-count property, Peter Xu, 2021/01/08
- [PATCH v4 12/13] KVM: Disable manual dirty log when dirty ring enabled, Peter Xu, 2021/01/08
- [PATCH v4 13/13] KVM: Dirty ring support, Peter Xu, 2021/01/08