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KVM: Cache kvm slot dirty bitmap size

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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>
Message-Id: <20210506160549.130416-8-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Xu 2021-05-06 12:05:46 -04:00 committed by Paolo Bonzini
parent 29b7e8be76
commit 563d32ba9b
2 changed files with 2 additions and 0 deletions
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1
accel/kvm/kvm-all.c
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@ -610,6 +610,7 @@ static void kvm_slot_init_dirty_bitmap(KVMSlot *mem)
hwaddr bitmap_size = ALIGN(mem->memory_size / qemu_real_host_page_size, hwaddr bitmap_size = ALIGN(mem->memory_size / qemu_real_host_page_size,
/*HOST_LONG_BITS*/ 64) / 8; /*HOST_LONG_BITS*/ 64) / 8;
mem->dirty_bmap = g_malloc0(bitmap_size); mem->dirty_bmap = g_malloc0(bitmap_size);
mem->dirty_bmap_size = bitmap_size;
} }
/* /*

1
include/sysemu/kvm_int.h
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@ -23,6 +23,7 @@ typedef struct KVMSlot
int old_flags; int old_flags;
/* Dirty bitmap cache for the slot */ /* Dirty bitmap cache for the slot */
unsigned long *dirty_bmap; unsigned long *dirty_bmap;
unsigned long dirty_bmap_size;
/* Cache of the address space ID */ /* Cache of the address space ID */
int as_id; int as_id;
/* Cache of the offset in ram address space */ /* Cache of the offset in ram address space */