xen/qemu-xen-upstream-qdisk-cache-unsafe.patch
Charles Arnold fb53ca5547 - bnc#879425: handle cache=unsafe from libvirt to disable flush in qdisk
libxl.add-option-to-disable-disk-cache-flushes-in-qdisk.patch
  qemu-xen-upstream-qdisk-cache-unsafe.patch

- libxl: introduce an option for disabling the non-O_DIRECT workaround
  recognize direct-io-safe in domU.cfg diskspec
  libxl.introduce-an-option-to-disable-the-non-O_DIRECT-workaround.patch
  

- fate#316071: add discard support for file backed storage (qdisk)
  update patch to allow more values in overloaded ->readwrite member

- bnc#826717 - VUL-0: CVE-2013-3495: XSA-59: xen: Intel VT-d
  Interrupt Remapping engines can be evaded by native NMI interrupts 
  537b5e50-VT-d-apply-quirks-at-device-setup-time-rather-than-only-at-boot.patch
  537b5e79-VT-d-extend-error-report-masking-workaround-to-newer-chipsets.patch
- Upstream patches from Jan
  53709b77-Nested-VMX-load-current_vmcs-only-when-it-exists.patch
  53732f4f-x86-MCE-bypass-uninitialized-vcpu-in-vMCE-injection.patch
  537b5ede-move-domain-to-cpupool0-before-destroying-it.patch

- Update README.SuSE with information on the toolstack change

- fate#316071: add discard support for file backed storage (qdisk)
  update to recognize option discard/no-discard instead of discard=0,1
  to match upstream change

OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=316
2014-05-29 22:55:47 +00:00

53 lines
1.8 KiB
Diff

https://bugzilla.novell.com/show_bug.cgi?id=879425
---
tools/qemu-xen-dir-remote/hw/block/xen_disk.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
Index: xen-4.4.0-testing/tools/qemu-xen-dir-remote/hw/block/xen_disk.c
===================================================================
--- xen-4.4.0-testing.orig/tools/qemu-xen-dir-remote/hw/block/xen_disk.c
+++ xen-4.4.0-testing/tools/qemu-xen-dir-remote/hw/block/xen_disk.c
@@ -113,6 +113,7 @@ struct XenBlkDev {
int requests_inflight;
int requests_finished;
+ gboolean cache_unsafe;
/* Persistent grants extension */
gboolean feature_discard;
gboolean feature_persistent;
@@ -725,6 +726,16 @@ static void blk_parse_discard(struct Xen
xenstore_write_be_int(&blkdev->xendev, "feature-discard", 1);
}
+static void blk_parse_cache_unsafe(struct XenBlkDev *blkdev)
+{
+ int enable;
+
+ blkdev->cache_unsafe = false;
+
+ if (xenstore_read_be_int(&blkdev->xendev, "suse-diskcache-disable-flush", &enable) == 0)
+ blkdev->cache_unsafe = !!enable;
+}
+
static int blk_init(struct XenDevice *xendev)
{
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
@@ -793,6 +804,7 @@ static int blk_init(struct XenDevice *xe
xenstore_write_be_int(&blkdev->xendev, "info", info);
blk_parse_discard(blkdev);
+ blk_parse_cache_unsafe(blkdev);
g_free(directiosafe);
return 0;
@@ -832,6 +844,9 @@ static int blk_connect(struct XenDevice
if (blkdev->feature_discard)
qflags |= BDRV_O_UNMAP;
+ if (blkdev->cache_unsafe)
+ qflags |= BDRV_O_NO_FLUSH;
+
/* init qemu block driver */
index = (blkdev->xendev.dev - 202 * 256) / 16;
blkdev->dinfo = drive_get(IF_XEN, 0, index);