OpenE2K/qemu-e2k
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8a1bd2973e
qemu-e2k/hw
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Paolo Bonzini 8a1bd2973e scsi-disk: add UNMAP limits to block limits VPD page 
Linux prefers WRITE SAME to UNMAP if the limits are zero, and WRITE
SAME does not discard anything unless the device can guarantee that
the resulting block is zero.

Setting the maximum unmap block and descriptor counts to non-zero
makes Linux choose UNMAP and fixes thin provisioning on glusterfs.

While the maximum unmap block count can have some effect on performance,
the (suggested) maximum number of descriptors is not particularly
important so I didn't add a customization option.  SCSI drivers are
used to online firmware updates so I'm not yet adding versioning support
for SCSI, but we're probably getting close to the point when it's worth
thinking about it.

Reported-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-12-22 14:59:33 +01:00
..
9pfs virtio-9p: Convert to QOM realize 2013-12-09 21:46:49 +01:00
acpi bswap.h: Remove le16_to_cpupu() 2013-11-05 19:57:46 -08:00
alpha hw/alpha: Fix compiler warning (integer constant is too large) 2013-10-02 22:55:28 +04:00
arm hw/arm/virt: Support -cpu host 2013-12-10 13:28:49 +00:00
audio intel-hda: fix position buffer 2013-12-09 09:19:26 +01:00
block virtio: Convert exit to unrealize 2013-12-09 21:46:49 +01:00
bt Preparation for usb-bt-dongle conditional build 2013-09-10 11:14:41 +02:00
char Merge remote-tracking branch 'bonzini/virtio' into staging 2013-12-13 11:10:33 -08:00
core qdev-properties-system.c: Allow vlan or netdev for -device, not both 2013-11-22 09:47:00 +01:00
cpu cpu/a9mpcore: Add Global Timer 2013-12-10 13:28:25 +00:00
cris axis_dev88: Don't enforce use of kernel for qtest 2013-11-05 17:47:29 +01:00
display qxl: Add missing trace.h (fix broken build) 2013-12-07 22:26:07 +04:00
dma qom: Pass available size to object_initialize() 2013-08-30 21:15:44 +02:00
gpio
i2c
i386 pc: use macro for HPET type 2013-12-11 20:11:10 +02:00
ide bswap.h: Remove cpu_to_be16wu() 2013-11-05 19:57:47 -08:00
input aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
intc realview_gic: Prepare for QOM embedding 2013-11-05 17:47:30 +01:00
isa ich9: APIs for pc guest info 2013-10-14 17:48:52 +03:00
lm32 milkymist: Suppress -kernel/-bios/-drive error for qtest 2013-11-05 17:47:29 +01:00
m68k an5206: Don't enforce use of kernel for qtest 2013-11-05 17:47:29 +01:00
microblaze hw/microblaze: Add support for loading initrd images 2013-10-24 22:56:48 +02:00
mips mips jazz: do not raise data bus exception when accessing invalid addresses 2013-11-21 17:39:22 +01:00
misc vfio-pci: Release all MSI-X vectors when disabled 2013-12-06 11:16:40 -07:00
moxie
net Merge remote-tracking branch 'bonzini/virtio' into staging 2013-12-13 11:10:33 -08:00
nvram eeprom93xx: fix coding style 2013-12-06 22:56:51 +04:00
openrisc openrisc-timer: Reduce overhead, Separate clock update functions 2013-11-20 21:46:45 +08:00
pci pci: fix pci bridge fw path 2013-12-11 20:11:08 +02:00
pci-bridge hw/pci-bridge: set PCI_INTERRUPT_PIN register before shpc init 2013-10-14 17:11:45 +03:00
pci-host pc: map PCI address space as catchall region for not mapped addresses 2013-12-10 12:29:56 +02:00
pcmcia pcmcia/pxa2xx: QOM'ify PXA2xxPCMCIAState 2013-11-05 18:06:52 +01:00
ppc spapr_pci: s/INT64_MAX/UINT64_MAX/ 2013-12-10 12:29:56 +02:00
s390x virtio-ccw: remove vdev field 2013-12-09 21:46:48 +01:00
scsi scsi-disk: add UNMAP limits to block limits VPD page 2013-12-22 14:59:33 +01:00
sd sd: Avoid access to NULL BlockDriverState 2013-10-17 10:15:18 +02:00
sh4 shix: Don't require firmware presence for qtest 2013-11-05 17:47:29 +01:00
sparc sun4m: Add FCode ROM for TCX framebuffer 2013-11-21 17:38:52 +01:00
sparc64 pc,pci,virtio fixes and cleanups 2013-09-03 12:31:07 -05:00
ssi
timer acpi.pci,pc,memory core fixes 2013-12-13 11:10:20 -08:00
tpm
unicore32 puv3: Turn puv3_load_kernel() into a no-op for qtest without -kernel 2013-11-05 17:47:28 +01:00
usb Improvements for usb3 bulk stream (usb core, xhci). 2013-12-06 12:54:36 -08:00
virtio virtio: Convert exit to unrealize 2013-12-09 21:46:49 +01:00
watchdog aio / timers: Switch entire codebase to the new timer API 2013-08-22 19:14:24 +02:00
xen xen-pvdevice: make device-id property compulsory 2013-12-01 18:25:48 +00:00
xtensa pc,pci,virtio fixes and cleanups 2013-09-03 12:31:07 -05:00
Makefile.objs pcmcia: QOM'ify PCMCIACardState and MicroDriveState 2013-11-05 18:06:52 +01:00