mirror of
https://github.com/Motorhead1991/qemu.git
synced 2026-02-08 01:00:44 -07:00
5f2585772f
Virtio spec 1.1 (and earlier), 5.2.5.2 Driver Requirements: Device Initialization: "Devices SHOULD always offer VIRTIO_BLK_F_FLUSH, and MUST offer it if they offer VIRTIO_BLK_F_CONFIG_WCE" Currently F_CONFIG_WCE and F_WCE are not connected to each other. Qemu will advertise F_CONFIG_WCE if config-wce argument is set for virtio-blk device. And F_WCE is advertised only if underlying block backend actually has it's caching enabled. Fix this by advertising F_WCE if F_CONFIG_WCE is also advertised. To preserve backwards compatibility with newer machine types make this behaviour governed by "x-enable-wce-if-config-wce" virtio-blk-device property and introduce hw_compat_4_2 with new property being off by default for all machine types <= 4.2 (but don't introduce 4.3 machine type itself yet). Signed-off-by: Evgeny Yakovlev <wrfsh@yandex-team.ru> Message-Id: <1572978137-189218-1-git-send-email-wrfsh@yandex-team.ru> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> |
||
|---|---|---|
| .. | ||
| kvm | ||
| xen | ||
| acpi-build.c | ||
| acpi-build.h | ||
| amd_iommu.c | ||
| amd_iommu.h | ||
| e820_memory_layout.c | ||
| e820_memory_layout.h | ||
| fw_cfg.c | ||
| fw_cfg.h | ||
| intel_iommu.c | ||
| intel_iommu_internal.h | ||
| Kconfig | ||
| kvmvapic.c | ||
| Makefile.objs | ||
| microvm.c | ||
| multiboot.c | ||
| multiboot.h | ||
| pc.c | ||
| pc_piix.c | ||
| pc_q35.c | ||
| pc_sysfw.c | ||
| trace-events | ||
| vmmouse.c | ||
| vmport.c | ||
| x86-iommu.c | ||
| x86.c | ||