AcoSail/kernel_optimize_test
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1f13d75ccb
kernel_optimize_test/drivers/block
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Roger Pau Monné 1f13d75ccb xen-blkback: only read request operation from shared ring once 
A compiler may load a switch statement value multiple times, which could
be bad when the value is in memory shared with the frontend.

When converting a non-native request to a native one, ensure that
src->operation is only loaded once by using READ_ONCE().

This is part of XSA155.

CC: stable@vger.kernel.org
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2015-12-18 10:00:32 -05:00
..
aoe Revert "block: remove artifical max_hw_sectors cap" 2015-08-18 13:21:13 -07:00
drbd block: kill merge_bvec_fn() completely 2015-08-13 12:31:57 -06:00
mtip32xx mtip32x: fix regression introduced by blk-mq per-hctx flush 2015-08-25 14:35:51 -06:00
paride Char/Misc driver patches for 4.2-rc1 2015-06-26 14:51:15 -07:00
rsxx block: make generic_make_request handle arbitrarily sized bios 2015-08-13 12:31:33 -06:00
xen-blkback xen-blkback: only read request operation from shared ring once 2015-12-18 10:00:32 -05:00
zram zram: fix possible use after free in zcomp_create() 2015-09-17 21:16:07 -07:00
amiflop.c block: drop owner assignment from platform_drivers 2014-10-20 16:20:18 +02:00
ataflop.c Merge branch 'for-3.16/core' of git://git.kernel.dk/linux-block into next 2014-06-02 09:29:34 -07:00
brd.c libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
cciss_cmd.h
cciss_scsi.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
cciss_scsi.h
cciss.c cciss: correct the non-resettable board list 2015-05-31 11:14:34 -07:00
cciss.h
cpqarray.c genirq: Remove the deprecated 'IRQF_DISABLED' request_irq() flag entirely 2015-03-05 20:53:06 +01:00
cpqarray.h
cryptoloop.c move linux/loop.h to drivers/block 2013-06-29 12:46:45 +04:00
DAC960.c block: use pci_zalloc_consistent 2014-08-08 15:57:28 -07:00
DAC960.h
floppy.c block: add a bi_error field to struct bio 2015-07-29 08:55:15 -06:00
hd.c block: hd: remove deprecated IRQF_DISABLED 2014-10-01 08:16:07 -06:00
ida_cmd.h
ida_ioctl.h
Kconfig libnvdimm, pmem: move pmem to drivers/nvdimm/ 2015-06-24 21:24:10 -04:00
loop.c blk-mq: fix racy updates of rq->errors 2015-10-01 10:10:55 +02:00
loop.h block: loop: don't hold lo_ctl_mutex in lo_open 2015-05-20 09:06:09 -06:00
Makefile libnvdimm, pmem: move pmem to drivers/nvdimm/ 2015-06-24 21:24:10 -04:00
mg_disk.c block: drop owner assignment from platform_drivers 2014-10-20 16:20:18 +02:00
nbd.c nbd: flags is a u32 variable 2015-08-17 08:23:01 -06:00
null_blk.c blk-mq: fix racy updates of rq->errors 2015-10-01 10:10:55 +02:00
nvme-core.c blk-mq: fix racy updates of rq->errors 2015-10-01 10:10:55 +02:00
nvme-scsi.c Merge branch 'for-4.2/drivers' of git://git.kernel.dk/linux-block 2015-06-25 15:12:50 -07:00
osdblk.c block: support different tag allocation policy 2015-01-23 14:15:46 -07:00
pktcdvd.c block: kill merge_bvec_fn() completely 2015-08-13 12:31:57 -06:00
ps3disk.c block: Kill bio_segments()/bi_vcnt usage 2013-11-23 22:33:51 -08:00
ps3vram.c block: make generic_make_request handle arbitrarily sized bios 2015-08-13 12:31:33 -06:00
rbd_types.h
rbd.c rbd: use writefull op for object size writes 2015-10-16 16:49:01 +02:00
skd_main.c block: have drivers use blk_queue_max_discard_sectors() 2015-07-17 08:41:53 -06:00
skd_s1120.h skd: fix formatting in skd_s1120.h 2013-11-08 09:10:30 -07:00
smart1,2.h
sunvdc.c sunvdc: reconnect ldc after vds service domain restarts 2014-12-11 18:52:45 -08:00
swim3.c powerpc: Move Power Macintosh drivers to generic byteswappers 2015-03-23 14:29:40 +11:00
swim_asm.S
swim.c block: drop owner assignment from platform_drivers 2014-10-20 16:20:18 +02:00
sx8.c block: rename REQ_TYPE_SPECIAL to REQ_TYPE_DRV_PRIV 2015-05-05 13:40:03 -06:00
umem.c block: make generic_make_request handle arbitrarily sized bios 2015-08-13 12:31:33 -06:00
umem.h
virtio_blk.c blk-mq: fix racy updates of rq->errors 2015-10-01 10:10:55 +02:00
xen-blkfront.c xen/xenbus: Rename *RING_PAGE* to *RING_GRANT* 2015-10-23 14:20:46 +01:00
xsysace.c block: systemace: Remove .owner field for driver 2014-08-21 20:37:54 -05:00
z2ram.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00