Commit 747afd5b authored by Juan Quintela's avatar Juan Quintela
Browse files

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: default avatarJuan Quintela <quintela@redhat.com>
Reviewed-by: default avatarOrit Wasserman <owasserm@redhat.com>
parent 12291ec1

kvm-all.c

+5 −2
Original line number Diff line number Diff line
@@ -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;
@@ -399,7 +401,8 @@ 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,

                ram_addr = section->mr->ram_addr + addr;

                cpu_physical_memory_set_dirty_range(ram_addr,

                                                    TARGET_PAGE_SIZE * hpratio);

            } while (c != 0);

        }