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kvm: use directly cpu_physical_memory_* api for tracking dirty pages 

Performance is important in this function, and we want to optimize even further.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
This commit is contained in:
Juan Quintela 2013-11-04 12:59:02 +01:00
parent 12291ec18f
commit 747afd5bcd
1 changed files with 5 additions and 2 deletions
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7
kvm-all.c
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@ -31,6 +31,7 @@
#include "sysemu/kvm.h"
#include "qemu/bswap.h"
#include "exec/memory.h"
#include "exec/ram_addr.h"
#include "exec/address-spaces.h"
#include "qemu/event_notifier.h"
#include "trace.h"
@ -382,6 +383,7 @@ static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section,
unsigned int i, j;
unsigned long page_number, c;
hwaddr addr, addr1;
ram_addr_t ram_addr;
unsigned int pages = int128_get64(section->size) / getpagesize();
unsigned int len = (pages + HOST_LONG_BITS - 1) / HOST_LONG_BITS;
unsigned long hpratio = getpagesize() / TARGET_PAGE_SIZE;
@ -399,8 +401,9 @@ static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section,
page_number = (i * HOST_LONG_BITS + j) * hpratio;
addr1 = page_number * TARGET_PAGE_SIZE;
addr = section->offset_within_region + addr1;
memory_region_set_dirty(section->mr, addr,
TARGET_PAGE_SIZE * hpratio);
ram_addr = section->mr->ram_addr + addr;
cpu_physical_memory_set_dirty_range(ram_addr,
TARGET_PAGE_SIZE * hpratio);
} while (c != 0);
}
}