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memory: differentiate memory_region_is_logging and memory_region_get_dirty_log_mask

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For now memory regions only track DIRTY_MEMORY_VGA individually, but
this will change soon.  To support this, split memory_region_is_logging
in two functions: one that returns a given bit from dirty_log_mask,
and one that returns the entire mask.  memory_region_is_logging gets an
extra parameter so that the compiler flags misuse.

While VGA-specific users (including the Xen listener!) will want to keep
checking that bit, KVM and vhost check for "any bit except migration"
(because migration is handled via the global start/stop listener
callbacks).

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-03-23 10:50:57 +01:00
parent 5299c0f2cf
commit 2d1a35bef0
7 changed files with 27 additions and 8 deletions
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3
kvm-all.c
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@ -663,7 +663,8 @@ static void kvm_set_phys_mem(MemoryRegionSection *section, bool add)
KVMSlot *mem, old;
int err;
MemoryRegion *mr = section->mr;
bool log_dirty = memory_region_is_logging(mr);
bool log_dirty =
memory_region_get_dirty_log_mask(mr) & ~(1 << DIRTY_MEMORY_MIGRATION);
bool writeable = !mr->readonly && !mr->rom_device;
bool readonly_flag = mr->readonly || memory_region_is_romd(mr);
hwaddr start_addr = section->offset_within_address_space;