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qemu/xen_disk-Add-suse-specific-flush-disable.patch
Bruce Rogers 86ffd40d11 Accepting request 882222 from home:bfrogers:branches:Virtualization
- Switch method of splitting off hw-s390x-virtio-gpu-ccw.so as a
  module to what was accepted upstream (bsc#1181103)
* Patches dropped:
  hw-s390x-modularize-virtio-gpu-ccw.patch
* Patches added:
  s390x-add-have_virtio_ccw.patch
  s390x-modularize-virtio-gpu-ccw.patch
  s390x-move-S390_ADAPTER_SUPPRESSIBLE.patch
- Fix OOB access in sdhci interface (CVE-2020-17380, bsc#1175144,
  CVE-2020-25085, bsc#1176681, CVE-2021-3409, bsc#1182282)
  hw-sd-sd-Actually-perform-the-erase-oper.patch
  hw-sd-sd-Fix-build-error-when-DEBUG_SD-i.patch
  hw-sd-sdhci-Correctly-set-the-controller.patch
  hw-sd-sdhci-Don-t-transfer-any-data-when.patch
  hw-sd-sdhci-Don-t-write-to-SDHC_SYSAD-re.patch
  hw-sd-sdhci-Limit-block-size-only-when-S.patch
  hw-sd-sdhci-Reset-the-data-pointer-of-s-.patch
  hw-sd-sd-Move-the-sd_block_-read-write-a.patch
  hw-sd-sd-Skip-write-protect-groups-check.patch
- Fix potential privilege escalation in virtiofsd tool
  (CVE-2021-20263, bsc#1183373)
  tools-virtiofsd-Replace-the-word-whiteli.patch
  viriofsd-Add-support-for-FUSE_HANDLE_KIL.patch
  virtiofsd-extract-lo_do_open-from-lo_ope.patch
  virtiofsd-optionally-return-inode-pointe.patch
  virtiofsd-prevent-opening-of-special-fil.patch
  virtiofs-drop-remapped-security.capabili.patch
  virtiofsd-Save-error-code-early-at-the-f.patch
- Fix OOB access (stack overflow) in rtl8139 NIC emulation
  (CVE-2021-3416, bsc#1182968)
  net-introduce-qemu_receive_packet.patch
  rtl8139-switch-to-use-qemu_receive_packe.patch
- Fix OOB access (stack overflow) in other NIC emulations
  (CVE-2021-3416)
  cadence_gem-switch-to-use-qemu_receive_p.patch
  dp8393x-switch-to-use-qemu_receive_packe.patch
  e1000-switch-to-use-qemu_receive_packet-.patch
  lan9118-switch-to-use-qemu_receive_packe.patch
  msf2-mac-switch-to-use-qemu_receive_pack.patch
  pcnet-switch-to-use-qemu_receive_packet-.patch
  sungem-switch-to-use-qemu_receive_packet.patch
  tx_pkt-switch-to-use-qemu_receive_packet.patch
- Fix heap overflow in MSIx emulation (CVE-2020-27821, bsc#1179686)
  memory-clamp-cached-translation-in-case-.patch
- Include upstream patches designated as stable material and
  reviewed for applicability to include here
  hw-arm-virt-Disable-pl011-clock-migratio.patch
  xen-block-Fix-removal-of-backend-instanc.patch
- Fix package scripts to not use hard coded paths for temporary
  working directories and log files (bsc#1182425)

OBS-URL: https://build.opensuse.org/request/show/882222
OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=632
2021-03-30 20:27:28 +00:00

50 lines
1.9 KiB
Diff

From: Bruce Rogers <brogers@suse.com>
Date: Wed, 9 Mar 2016 15:18:11 -0700
Subject: xen_disk: Add suse specific flush disable handling and map to QEMU
equiv
Add code to read the suse specific suse-diskcache-disable-flush flag out
of xenstore, and set the equivalent flag within QEMU.
Patch taken from Xen's patch queue, Olaf Hering being the original author.
[bsc#879425]
[BR: minor edits to pass qemu's checkpatch script]
[BR: With qdevification of xen-block, code has changed significantly]
Signed-off-by: Bruce Rogers <brogers@suse.com>
Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
hw/block/xen-block.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
index b1a3fa9b6a91f7748ce54d77cad6..f6b66a0428eaa37db4c1bbe7e2c4 100644
--- a/hw/block/xen-block.c
+++ b/hw/block/xen-block.c
@@ -729,6 +729,8 @@ static XenBlockDrive *xen_block_drive_create(const char *id,
const char *mode = qdict_get_try_str(opts, "mode");
const char *direct_io_safe = qdict_get_try_str(opts, "direct-io-safe");
const char *discard_enable = qdict_get_try_str(opts, "discard-enable");
+ const char *suse_diskcache_disable_flush = qdict_get_try_str(opts,
+ "suse-diskcache-disable-flush");
char *driver = NULL;
char *filename = NULL;
XenBlockDrive *drive = NULL;
@@ -797,6 +799,16 @@ static XenBlockDrive *xen_block_drive_create(const char *id,
}
}
+ if (suse_diskcache_disable_flush) {
+ unsigned long value;
+ if (!qemu_strtoul(suse_diskcache_disable_flush, NULL, 2, &value) && !!value) {
+ QDict *cache_qdict = qdict_new();
+
+ qdict_put_bool(cache_qdict, "no-flush", true);
+ qdict_put_obj(file_layer, "cache", QOBJECT(cache_qdict));
+ }
+ }
+
/*
* It is necessary to turn file locking off as an emulated device
* may have already opened the same image file.