From ff9c1f7e3e17cc2afe1b2dfa545065e91941db8b Mon Sep 17 00:00:00 2001 From: Kunkun Jiang Date: Tue, 11 May 2021 10:08:13 +0800 Subject: [PATCH] vfio: Introduce helpers to mark dirty pages of a RAM section Extract part of the code from vfio_sync_dirty_bitmap to form a new helper, which allows to mark dirty pages of a RAM section. This helper will be called for nested stage. Signed-off-by: Kunkun Jiang --- hw/vfio/common.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 21a866e545..5176fd3a3d 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -1304,6 +1304,19 @@ err_out: return ret; } +static int vfio_dma_sync_ram_section_dirty_bitmap(VFIOContainer *container, + MemoryRegionSection *section) +{ + ram_addr_t ram_addr; + + ram_addr = memory_region_get_ram_addr(section->mr) + + section->offset_within_region; + + return vfio_get_dirty_bitmap(container, + REAL_HOST_PAGE_ALIGN(section->offset_within_address_space), + int128_get64(section->size), ram_addr); +} + typedef struct { IOMMUNotifier n; VFIOGuestIOMMU *giommu; @@ -1345,8 +1358,6 @@ static void vfio_iommu_map_dirty_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) static int vfio_sync_dirty_bitmap(VFIOContainer *container, MemoryRegionSection *section) { - ram_addr_t ram_addr; - if (memory_region_is_iommu(section->mr)) { VFIOGuestIOMMU *giommu; @@ -1375,12 +1386,7 @@ static int vfio_sync_dirty_bitmap(VFIOContainer *container, return 0; } - ram_addr = memory_region_get_ram_addr(section->mr) + - section->offset_within_region; - - return vfio_get_dirty_bitmap(container, - REAL_HOST_PAGE_ALIGN(section->offset_within_address_space), - int128_get64(section->size), ram_addr); + return vfio_dma_sync_ram_section_dirty_bitmap(container, section); } static void vfio_listener_log_sync(MemoryListener *listener, -- 2.27.0