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qemu/xen_disk-Add-suse-specific-flush-disable.patch
José Ricardo Ziviani 7f46c79c5d Accepting request 914430 from home:jziviani:branches:Virtualization
- Update to v6.1: see https://wiki.qemu.org/ChangeLog/6.1
  For a full list of formely deprecated features that are removed,
  consult: https://qemu-project.gitlab.io/qemu/about/removed-features.html
  For a list of new deprecated features, consult:
  https://qemu-project.gitlab.io/qemu/about/deprecated.html
  Some noteworthy changes:
* Removed moxie CPU.
* Removed lm32 CPU.
* Removed unicore32 CPU.
* Removed 'info cpustats'.
* Added Aspeed machines: rainier-bmc, quanta-q7l1-bmc.
* Added npcm7xx machine: quanta-gbs-bmc.
* Model for Aspeed's Hash and Crypto Engine.
* SVE2 is now emulated, including bfloat16 support
* FEAT_I8MM, FEAT_TLBIOS, FEAT_TLBRANGE, FEAT_BF16, FEAT_AA32BF16, and
  FEAT_MTE3 are now emulated.
* Improved hot-unplug failures on PowerPC pseries machine.
* Implemented some POWER10 instructions in TCG.
* Added shakti_c RISC-V machine.
* Improved documentation for RISC-V machines.
* CPU models for gen16 have been added for s390x.
* New CPU model versions added with XSAVES enabled:
  Skylake-Client-v4, Skylake-Server-v5, Cascadelake-Server-v5,
  Cooperlake-v2, Icelake-Client-v3, Icelake-Server-v5, Denverton-v3,
  Snowridge-v3, Dhyana-v2
* Added ACPI based PCI hotplug support to Q35 machine. Enabled and
  used by default since pc-q35-6.1 machine type.
* Added support for the pca9546 and pca9548 I2C muxes.
* Added support for PMBus and several PMBus devices.
* Crypto subsystem:
  The preferred crypto backend driver now gnutls, with libgcrypt as the
  second choice, and nettle as third choice, with ordering driven mostly
  by performance of the ciphers.
* Misc doc improvements.
* Patches removed:
  block-nvme-Fix-VFIO_MAP_DMA-failed-No-sp.patch
  hmp-Fix-loadvm-to-resume-the-VM-on-succe.patch
  hw-block-nvme-align-with-existing-style.patch
  hw-block-nvme-consider-metadata-read-aio.patch
  hw-net-can-sja1000-fix-buff2frame_bas-an.patch
  hw-nvme-fix-missing-check-for-PMR-capabi.patch
  hw-nvme-fix-pin-based-interrupt-behavior.patch
  hw-pci-host-q35-Ignore-write-of-reserved.patch
  hw-rdma-Fix-possible-mremap-overflow-in-.patch
  hw-rx-rx-gdbsim-Do-not-accept-invalid-me.patch
  hw-usb-Do-not-build-USB-subsystem-if-not.patch
  hw-usb-host-stub-Remove-unused-header.patch
  linux-user-aarch64-Enable-hwcap-for-RND-.patch
  module-for-virtio-gpu-pre-load-module-to.patch
  monitor-qmp-fix-race-on-CHR_EVENT_CLOSED.patch
  pvrdma-Ensure-correct-input-on-ring-init.patch
  pvrdma-Fix-the-ring-init-error-flow-CVE-.patch
  qemu-config-load-modules-when-instantiat.patch
  qemu-config-parse-configuration-files-to.patch
  qemu-config-use-qemu_opts_from_qdict.patch
  runstate-Initialize-Error-to-NULL.patch
  sockets-update-SOCKET_ADDRESS_TYPE_FD-li.patch
  target-i386-Exit-tb-after-wrmsr.patch
  target-sh4-Return-error-if-CPUClass-get_.patch
  tcg-Allocate-sufficient-storage-in-temp_.patch
  tcg-arm-Fix-tcg_out_op-function-signatur.patch
  tcg-sparc-Fix-temp_allocate_frame-vs-spa.patch
  ui-Fix-memory-leak-in-qemu_xkeymap_mappi.patch
  usb-hid-avoid-dynamic-stack-allocation.patch
  usb-limit-combined-packets-to-1-MiB-CVE-.patch
  usb-mtp-avoid-dynamic-stack-allocation.patch
  usb-redir-avoid-dynamic-stack-allocation.patch
  usbredir-fix-free-call.patch
  vfio-ccw-Permit-missing-IRQs.patch
  vhost-user-blk-Check-that-num-queues-is-.patch
  vhost-user-blk-Don-t-reconnect-during-in.patch
  vhost-user-blk-Fail-gracefully-on-too-la.patch
  vhost-user-blk-Get-more-feature-flags-fr.patch
  vhost-user-blk-Make-sure-to-set-Error-on.patch
  vhost-user-gpu-abstract-vg_cleanup_mappi.patch
  vhost-user-gpu-fix-leak-in-virgl_cmd_res.patch
  vhost-user-gpu-fix-leak-in-virgl_resourc.patch
  vhost-user-gpu-fix-memory-disclosure-in-.patch
  vhost-user-gpu-fix-memory-leak-in-vg_res.patch
  vhost-user-gpu-fix-memory-leak-while-cal.patch
  vhost-user-gpu-fix-OOB-write-in-virgl_cm.patch
  vhost-user-gpu-fix-resource-leak-in-vg_r.patch
  vhost-vdpa-don-t-initialize-backend_feat.patch
  virtio-blk-Fix-rollback-path-in-virtio_b.patch
  virtio-Fail-if-iommu_platform-is-request.patch
  virtiofsd-Fix-side-effect-in-assert.patch
  vl-allow-not-specifying-size-in-m-when-u.patch
  vl-Fix-an-assert-failure-in-error-path.patch
  vl-plug-object-back-into-readconfig.patch
  vl-plumb-keyval-based-options-into-readc.patch
  x86-acpi-use-offset-instead-of-pointer-w.patch

OBS-URL: https://build.opensuse.org/request/show/914430
OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=665
2021-08-26 17:37:40 +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 674953f1adeeaec6a81d9857144e..07b3be7b9b9f6093642363f13187 100644
--- a/hw/block/xen-block.c
+++ b/hw/block/xen-block.c
@@ -723,6 +723,8 @@ 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;
@@ -803,6 +805,16 @@ 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.