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migration: Simplify alignment and alignment checks

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Let's use QEMU_ALIGN_DOWN() and friends to make the code a bit easier to
read.

Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
David Hildenbrand 2021-10-11 19:53:44 +02:00 • committed by Juan Quintela
parent 9470c5e082
commit 7648297d40
3 changed files with 8 additions and 9 deletions
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2
migration/ram.c
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@ -811,7 +811,7 @@ static void migration_clear_memory_region_dirty_bitmap(RAMBlock *rb,
assert(shift >= 6);
size = 1ULL << (TARGET_PAGE_BITS + shift);
start = (((ram_addr_t)page) << TARGET_PAGE_BITS) & (-size);
start = QEMU_ALIGN_DOWN((ram_addr_t)page << TARGET_PAGE_BITS, size);
trace_migration_bitmap_clear_dirty(rb->idstr, start, size, page);
memory_region_clear_dirty_bitmap(rb->mr, start, size);
}