[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 5/5] xen: Set the vram dirty when an error occur.
If the call to xc_hvm_track_dirty_vram() fails, then we set dirtybit on all the video ram. This case happens during migration. Backport of 8aba7dc02d5660df7e7d8651304b3079908358be Signed-off-by: Alex Bligh <alex@xxxxxxxxxxx> --- xen-all.c | 20 ++++++++++++++++++-- 1 files changed, 18 insertions(+), 2 deletions(-) diff --git a/xen-all.c b/xen-all.c index 121289d..dbd759c 100644 --- a/xen-all.c +++ b/xen-all.c @@ -470,7 +470,21 @@ static int xen_sync_dirty_bitmap(XenIOState *state, rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid, start_addr >> TARGET_PAGE_BITS, npages, bitmap); - if (rc) { + if (rc < 0) { + if (rc != -ENODATA) { + ram_addr_t addr, end; + + xen_modified_memory(start_addr, size); + + end = TARGET_PAGE_ALIGN(start_addr + size); + for (addr = start_addr & TARGET_PAGE_MASK; addr < end; addr += TARGET_PAGE_SIZE) { + cpu_physical_memory_set_dirty(addr); + } + + DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx + ", 0x" TARGET_FMT_plx "): %s\n", + start_addr, start_addr + size, strerror(-rc)); + } return rc; } @@ -479,7 +493,9 @@ static int xen_sync_dirty_bitmap(XenIOState *state, while (map != 0) { j = ffsl(map) - 1; map &= ~(1ul << j); - cpu_physical_memory_set_dirty(vram_offset + (i * width + j) * TARGET_PAGE_SIZE); + target_phys_addr_t todirty = vram_offset + (i * width + j) * TARGET_PAGE_SIZE; + xen_modified_memory(todirty, TARGET_PAGE_SIZE); + cpu_physical_memory_set_dirty(todirty); }; } -- 1.7.4.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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