Michael Kelley 76a7cd047b scsi: storvsc: Don't pass unused PFNs to Hyper-V host ... [ Upstream commit 4e81a6cba5 ] In a SCSI request, storvsc pre-allocates space for up to MAX_PAGE_BUFFER_COUNT physical frame numbers to be passed to Hyper-V. If the size of the I/O request requires more PFNs, a separate memory area of exactly the correct size is dynamically allocated. But when the pre-allocated area is used, current code always passes MAX_PAGE_BUFFER_COUNT PFNs to Hyper-V, even if fewer are needed. While this doesn't break anything because the additional PFNs are always zero, more bytes than necessary are copied into the VMBus channel ring buffer. This takes CPU cycles and wastes space in the ring buffer. For a typical 4 Kbyte I/O that requires only a single PFN, 248 unnecessary bytes are copied. Fix this by setting the payload_sz based on the actual number of PFNs required, not the size of the pre-allocated space. Reported-by: John Starks <jostarks@microsoft.com> Fixes: 8f43710543 ("scsi: storvsc: Support PAGE_SIZE larger than 4K") Signed-off-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1684171241-16209-1-git-send-email-mikelley@microsoft.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-05-24 17:36:52 +01:00
..
aacraid	scsi: aacraid: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:38 -04:00
aic7xxx	SCSI misc on 20210711	2021-07-11 10:59:53 -07:00
aic94xx	scsi: aic94xx: Add missing check for dma_map_single()	2023-03-10 09:39:28 +01:00
arcmsr	scsi: arcmsr: Avoid over-read of sense buffer	2021-06-18 23:26:33 -04:00
arm	scsi: acornscsi: Remove scsi_cmd_to_tag() reference	2021-10-04 21:54:18 -04:00
be2iscsi	scsi: iscsi: Fix session removal on shutdown	2022-08-17 14:23:45 +02:00
bfa	scsi: bfa: Replace snprintf() with sysfs_emit()	2022-04-13 20:59:02 +02:00
bnx2fc	scsi: bnx2fc: Make bnx2fc_recv_frame() mp safe	2022-02-08 18:34:11 +01:00
bnx2i	scsi: iscsi: Fix session removal on shutdown	2022-08-17 14:23:45 +02:00
csiostor	scsi: csiostor: Uninitialized data in csio_ln_vnp_read_cbfn()	2021-11-18 19:16:52 +01:00
cxgbi	scsi: iscsi: Rename iscsi_conn_queue_work()	2022-10-26 12:35:15 +02:00
cxlflash	pci-v5.15-changes	2021-09-07 19:13:42 -07:00
device_handler	scsi: scsi_dh_alua: Fix memleak for 'qdata' in alua_activate()	2023-03-30 12:47:45 +02:00
dpt	…
elx	scsi: elx: libefc: Fix second parameter type in state callbacks	2022-12-31 13:14:44 +01:00
esas2r	Merge branch '5.14/scsi-result' into 5.14/scsi-staging	2021-06-02 01:37:04 -04:00
fcoe	scsi: fcoe: Fix transport not deattached when fcoe_if_init() fails	2022-12-31 13:14:25 +01:00
fnic	scsi: fnic: Fix a tracing statement	2022-04-08 14:23:33 +02:00
hisi_sas	scsi: hisi_sas: Check devm_add_action() return value	2023-03-30 12:47:53 +02:00
ibmvscsi	scsi: ibmvfc: Avoid path failures during live migration	2022-12-02 17:41:02 +01:00
ibmvscsi_tgt	scsi: ibmvscsis: Increase INITIAL_SRP_LIMIT to 1024	2022-04-20 09:34:15 +02:00
isci	scsi: isci: Use the proper SCSI midlayer interfaces for PI	2021-08-11 22:25:43 -04:00
libfc	scsi: libfc: Fix use after free in fc_exch_abts_resp()	2022-04-13 20:59:08 +02:00
libsas	scsi: libsas: Fix use-after-free bug in smp_execute_task_sg()	2022-10-26 12:35:15 +02:00
lpfc	scsi: lpfc: Prevent lpfc_debugfs_lockstat_write() buffer overflow	2023-05-24 17:36:44 +01:00
megaraid	scsi: megaraid_sas: Fix fw_crash_buffer_show()	2023-04-26 13:51:50 +02:00
mpi3mr	scsi: mpi3mr: Refer CONFIG_SCSI_MPI3MR in Makefile	2023-01-18 11:48:53 +01:00
mpt3sas	scsi: mpt3sas: Don't print sense pool info twice	2023-04-05 11:24:55 +02:00
mvsas	scsi: mvsas: Add PCI ID of RocketRaid 2640	2022-04-20 09:34:17 +02:00
pcmcia	scsi: fdomain: Fix error return code in fdomain_probe()	2021-08-09 23:30:25 -04:00
pm8001	scsi: pm80xx: Enable upper inbound, outbound queues	2022-04-20 09:34:11 +02:00
qedf	scsi: qedf: Populate sysfs attributes for vport	2022-10-26 12:34:26 +02:00
qedi	scsi: qedi: Fix use after free bug in qedi_remove()	2023-05-17 11:50:15 +02:00
qla2xxx	scsi: qla2xxx: Fix memory leak in qla2x00_probe_one()	2023-04-13 16:48:23 +02:00
qla4xxx	scsi: qla4xxx: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:41 -04:00
smartpqi	scsi: smartpqi: Fix DMA direction for RAID requests	2022-08-17 14:23:51 +02:00
snic	scsi: snic: Fix memory leak with using debugfs_lookup()	2023-03-10 09:39:54 +01:00
sym53c8xx_2	scsi: sym53c8xx: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:42 -04:00
ufs	scsi: ufs: ufs-pci: Add support for Intel Lunar Lake	2023-05-24 17:36:45 +01:00
.gitignore	…
3w-9xxx.c	scsi: 3w-9xxx: Avoid disabling device if failing to enable it	2022-10-26 12:35:46 +02:00
3w-9xxx.h	scsi: 3w-9xxx: Fix endianness issues in command packets	2021-05-15 18:01:34 -04:00
3w-sas.c	scsi: 3w-sas: Remove unneeded variable 'retval'	2021-03-18 22:18:09 -04:00
3w-sas.h	scsi: 3w-sas: Whitespace cleanup	2021-01-22 21:14:08 -05:00
3w-xxxx.c	scsi: core: Drop obsolete Linux-specific SCSI status codes	2021-05-31 23:59:18 -04:00
3w-xxxx.h	scsi: 3w-xxxx: Whitespace cleanup	2021-01-22 21:14:07 -05:00
53c700.c	scsi: 53c700: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:38 -04:00
53c700.h	treewide: remove editor modelines and cruft	2021-05-07 00:26:34 -07:00
53c700.scr	…
53c700_d.h_shipped	…
BusLogic.c	scsi: BusLogic: Use %X for u32 sized integer rather than %lX	2021-08-01 13:27:46 -04:00
BusLogic.h	scsi: BusLogic: Fix 64-bit system enumeration error for Buslogic	2021-05-14 22:19:04 -04:00
FlashPoint.c	Merge branch '5.14/scsi-result' into 5.14/scsi-staging	2021-06-02 01:37:04 -04:00
Kconfig	scsi: core: Rename CONFIG_BLK_SCSI_REQUEST to CONFIG_SCSI_COMMON	2021-07-28 22:24:27 -04:00
Makefile	scsi: core: Fix missing FORCE for scsi_devinfo_tbl.c build rule	2021-08-23 23:07:05 -04:00
NCR5380.c	scsi: NCR5380: Use sc_data_direction instead of rq_data_dir()	2021-08-11 22:25:38 -04:00
NCR5380.h	scsi: NCR5380: Remove context check	2020-12-07 20:24:09 -05:00
a100u2w.c	scsi: a100u2w: Remove unused variable biosaddr	2021-03-29 23:33:06 -04:00
a100u2w.h	…
a2091.c	…
a2091.h	…
a3000.c	…
a3000.h	…
a4000t.c	…
advansys.c	scsi: advansys: Fix kernel pointer leak	2021-11-25 09:48:27 +01:00
aha152x.c	scsi: aha152x: Fix aha152x_setup() __setup handler return value	2022-04-13 20:59:07 +02:00
aha152x.h	…
aha1542.c	scsi: aha1542: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:38 -04:00
aha1542.h	scsi: aha1542: Clarify 'struct ccb' comments	2021-01-13 00:14:07 -05:00
aha1740.c	scsi: aha1740: Avoid over-read of sense buffer	2021-06-18 23:27:04 -04:00
aha1740.h	…
am53c974.c	…
atari_scsi.c	scsi: atari_scsi: Fix race condition between .queuecommand and EH	2020-11-23 22:12:09 -05:00
atp870u.c	scsi: atp870u: Fix naming and demote incorrect and non-conformant kernel-doc header	2021-03-15 22:29:00 -04:00
atp870u.h	scsi: atp870u: Whitespace cleanup	2021-01-22 21:14:08 -05:00
bvme6000_scsi.c	…
ch.c	scsi: scsi_ioctl: Call scsi_cmd_ioctl() from scsi_ioctl()	2021-07-28 22:24:25 -04:00
constants.c	scsi: core: Introduce enums for the SAM and host status codes	2021-06-02 23:09:39 -04:00
dc395x.c	scsi: dc395x: Fix a missing check on list iterator	2022-06-09 10:23:22 +02:00
dc395x.h	scsi: dc395x: Drop internal SCSI message definitions	2021-01-22 21:14:10 -05:00
dmx3191d.c	…
dpt_i2o.c	scsi: dpt_i2o: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:38 -04:00
dpti.h	…
esp_scsi.c	scsi: core: Kill DRIVER_SENSE	2021-05-31 22:48:21 -04:00
esp_scsi.h	…
fdomain.c	scsi: fdomain: Translate message to host byte status	2021-05-31 22:48:24 -04:00
fdomain.h	scsi: fdomain: Mark 'fdomain_pm_ops' as __maybe_unused	2020-07-08 01:12:44 -04:00
fdomain_isa.c	isa: Make the remove callback for isa drivers return void	2021-01-26 07:42:27 +01:00
fdomain_pci.c	…
g_NCR5380.c	isa: Make the remove callback for isa drivers return void	2021-01-26 07:42:27 +01:00
gvp11.c	…
gvp11.h	…
hosts.c	scsi: core: Fix a procfs host directory removal regression	2023-03-22 13:31:23 +01:00
hpsa.c	scsi: hpsa: Fix allocation size for scsi_host_alloc()	2023-02-01 08:27:22 +01:00
hpsa.h	scsi: hpsa: Update copyright	2020-09-02 22:49:06 -04:00
hpsa_cmd.h	scsi: hpsa: Add an assert to prevent __packed reintroduction	2021-04-01 22:52:40 -04:00
hptiop.c	scsi: core: Do not use DRIVER_INVALID	2021-05-31 22:48:21 -04:00
hptiop.h	…
imm.c	scsi: imm: Switch to use module_parport_driver()	2021-06-18 23:01:03 -04:00
imm.h	…
initio.c	scsi: initio: Fix a few kernel-doc misdemeanours	2021-03-18 23:35:55 -04:00
initio.h	scsi: initio: Drop internal SCSI message definition	2021-01-22 21:14:10 -05:00
ipr.c	scsi: ipr: Work around fortify-string warning	2023-03-11 13:57:31 +01:00
ipr.h	scsi: ipr: System crashes when seeing type 20 error	2021-06-29 16:46:08 -04:00
ips.c	scsi: ips: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:39 -04:00
ips.h	treewide: remove editor modelines and cruft	2021-05-07 00:26:34 -07:00
iscsi_boot_sysfs.c	…
iscsi_tcp.c	scsi: iscsi_tcp: Check that sock is valid before iscsi_set_param()	2023-04-13 16:48:24 +02:00
iscsi_tcp.h	scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()	2022-10-26 12:35:16 +02:00
jazz_esp.c	scsi: jazz_esp: Add IRQ check	2021-04-13 00:20:48 -04:00
lasi700.c	parisc: Make struct parisc_driver::remove() return void	2021-08-30 10:18:25 +02:00
libiscsi.c	scsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress	2023-02-09 11:26:39 +01:00
libiscsi_tcp.c	scsi: iscsi: Merge suspend fields	2022-04-27 14:38:56 +02:00
mac53c94.c	scsi: mac53c94: Fix warning comparing pointer to 0	2021-03-24 22:16:12 -04:00
mac53c94.h	…
mac_esp.c	scsi: mac_esp: Use module_platform_driver to simplify the code	2020-10-02 21:52:53 -04:00
mac_scsi.c	scsi: NCR5380: Remove context check	2020-12-07 20:24:09 -05:00
megaraid.c	scsi: megaraid: Fix mega_cmd_done() CMDID_INT_CMDS	2023-05-11 23:00:26 +09:00
megaraid.h	…
mesh.c	scsi: mesh: Translate message to host byte status	2021-05-31 22:48:23 -04:00
mesh.h	…
mvme16x_scsi.c	…
mvme147.c	…
mvme147.h	…
mvumi.c	scsi: mvumi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:40 -04:00
mvumi.h	…
myrb.c	scsi: myrb: Fix up null pointer access on myrb_cleanup()	2022-06-14 18:36:22 +02:00
myrb.h	…
myrs.c	scsi: myrs: Fix crash in error case	2022-02-16 12:56:14 +01:00
myrs.h	…
ncr53c8xx.c	scsi: ncr53c8xx: Remove unused retrieve_from_waiting_list() function	2021-09-13 22:15:47 -04:00
ncr53c8xx.h	scsi: ncr53c8xx: Use SAM status values	2021-01-22 21:14:12 -05:00
nsp32.c	scsi: nsp32: Do not set message byte	2021-05-31 22:48:23 -04:00
nsp32.h	…
nsp32_debug.c	…
nsp32_io.h	…
pmcraid.c	scsi: pmcraid: Fix missing resource cleanup in error case	2022-06-22 14:21:57 +02:00
pmcraid.h	scsi: pmcraid: Fix typos	2021-05-21 16:59:33 -04:00
ppa.c	scsi: ppa: Switch to use module_parport_driver()	2021-06-18 23:01:03 -04:00
ppa.h	…
ps3rom.c	scsi: core: Introduce scsi_build_sense()	2021-05-31 22:48:21 -04:00
qla1280.c	scsi: qla1280: Stop using scsi_cmnd.tag	2021-08-23 23:06:56 -04:00
qla1280.h	…
qlogicfas.c	…
qlogicfas408.c	scsi: qlogicfas408: Whitespace cleanup	2021-05-31 22:48:23 -04:00
qlogicfas408.h	…
qlogicpti.c	scsi: qlogicpti: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:41 -04:00
qlogicpti.h	…
raid_class.c	…
script_asm.pl	…
scsi.c	scsi: core: Improve scsi_vpd_inquiry() checks	2023-04-26 13:51:50 +02:00
scsi.h	…
scsi_bsg.c	scsi: bsg: Fix commands without data transfer in scsi_bsg_sg_io_fn()	2021-08-01 13:21:40 -04:00
scsi_common.c	scsi: core: Rename CONFIG_BLK_SCSI_REQUEST to CONFIG_SCSI_COMMON	2021-07-28 22:24:27 -04:00
scsi_debug.c	scsi: scsi_debug: Fix possible name leak in sdebug_add_host_helper()	2022-12-31 13:14:25 +01:00
scsi_debugfs.c	scsi: core: Show SCMD_LAST in text form	2022-01-27 11:05:22 +01:00
scsi_debugfs.h	…
scsi_devinfo.c	scsi: core: Add BLIST_SKIP_VPD_PAGES for SKhynix H28U74301AMR	2023-03-30 12:47:55 +02:00
scsi_dh.c	scsi: scsi_dh: Fix a typo	2021-03-24 23:03:43 -04:00
scsi_error.c	scsi: core: Fix a race between scsi_done() and scsi_timeout()	2022-12-31 13:14:21 +01:00
scsi_ioctl.c	scsi: core: Fix warning in scsi_alloc_sgtables()	2022-08-03 12:03:47 +02:00
scsi_lib.c	scsi: core: Fix scsi_mode_sense() buffer length handling	2021-11-25 09:48:26 +01:00
scsi_lib_dma.c	…
scsi_logging.c	scsi: core: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:37 -04:00
scsi_logging.h	…
scsi_netlink.c	…
scsi_pm.c	scsi: block: pm: Always set request queue runtime active in blk_post_runtime_resume()	2022-01-27 11:04:15 +01:00
scsi_priv.h	scsi: bsg: Simplify device registration	2021-07-30 22:22:36 -04:00
scsi_proc.c	…
scsi_sas_internal.h	…
scsi_scan.c	scsi: Revert "scsi: core: map PQ=1, PDT=other values to SCSI_SCAN_TARGET_PRESENT"	2023-02-09 11:26:34 +01:00
scsi_sysctl.c	…
scsi_sysfs.c	scsi: core: Restrict legal sdev_state transitions via sysfs	2022-11-10 18:15:34 +01:00
scsi_trace.c	…
scsi_transport_api.h	…
scsi_transport_fc.c	scsi: scsi_transport_fc: Fix FPIN Link Integrity statistics counters	2022-04-08 14:22:54 +02:00
scsi_transport_iscsi.c	scsi: iscsi: Fix multiple iSCSI session unbind events sent to userspace	2023-02-01 08:27:16 +01:00
scsi_transport_sas.c	scsi: scsi_transport_sas: Fix error handling in sas_phy_add()	2022-11-26 09:24:35 +01:00
scsi_transport_spi.c	scsi: scsi_transport_spi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:37 -04:00
scsi_transport_srp.c	scsi: scsi_transport_srp: Don't block target in SRP_PORT_LOST state	2021-04-05 23:14:53 -04:00
scsicam.c	include: remove pagemap.h from blkdev.h	2021-05-06 19:24:11 -07:00
sd.c	scsi: sd: Revert "scsi: sd: Remove a local variable"	2022-11-03 23:59:20 +09:00
sd.h	SCSI misc on 20201013	2020-10-14 15:15:35 -07:00
sd_dif.c	…
sd_zbc.c	scsi: sd_zbc: Support disks with more than 2**32 logical blocks	2021-09-21 23:52:55 -04:00
sense_codes.h	scsi: core: Update additional sense codes list	2020-09-15 20:28:06 -04:00
ses.c	scsi: ses: Handle enclosure with just a primary component gracefully	2023-04-20 12:13:55 +02:00
sg.c	scsi: sg: Allow waiting for commands to complete on removed device	2022-08-17 14:22:55 +02:00
sgiwd93.c	sgiwd93: convert to dma_alloc_noncoherent	2020-09-25 06:20:44 +02:00
sim710.c	scsi: sim710: Remove unused variable 'err' from sim710_init()	2021-03-18 22:52:29 -04:00
sni_53c710.c	treewide: remove editor modelines and cruft	2021-05-07 00:26:34 -07:00
sr.c	scsi: sr: Fix typo in CDROM(CLOSETRAY|EJECT) handling	2022-04-13 20:59:15 +02:00
sr.h	…
sr_ioctl.c	scsi: sr: Do not leak information in ioctl	2022-04-27 14:38:58 +02:00
sr_vendor.c	scsi: sr: Don't use GFP_DMA	2022-01-27 11:05:03 +01:00
st.c	block: drop unused includes in <linux/genhd.h>	2022-03-16 14:23:46 +01:00
st.h	st: do not allocate a gendisk	2021-08-23 12:54:30 -06:00
st_options.h	…
stex.c	scsi: stex: Properly zero out the passthrough command structure	2022-10-15 07:59:01 +02:00
storvsc_drv.c	scsi: storvsc: Don't pass unused PFNs to Hyper-V host	2023-05-24 17:36:52 +01:00
sun3_scsi.c	scsi: sun3_scsi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request	2021-08-11 22:25:41 -04:00
sun3_scsi_vme.c	…
sun3x_esp.c	scsi: sun3x_esp: Add IRQ check	2021-04-13 00:20:48 -04:00
sun_esp.c	scsi: sun_esp: Use module_platform_driver to simplify the code	2020-10-02 21:52:55 -04:00
virtio_scsi.c	scsi: virtio_scsi: Fix spelling mistake "Unsupport" -> "Unsupported"	2021-09-28 22:47:28 -04:00
vmw_pvscsi.c	scsi: vmw_pvscsi: Set residual data length conditionally	2022-01-05 12:42:39 +01:00
vmw_pvscsi.h	scsi: vmw_pvscsi: Expand vcpuHint to 16 bits	2022-06-22 14:21:57 +02:00
wd33c93.c	scsi: wd33c93: Translate message byte to host byte	2021-05-31 22:48:23 -04:00
wd33c93.h	…
wd719x.c	scsi: wd719: Stop using scsi_cmnd.tag	2021-08-16 13:33:24 -04:00
wd719x.h	…
xen-scsifront.c	xen/scsifront: don't use gnttab_query_foreign_access() for mapped status	2022-03-11 12:22:36 +01:00
zalon.c	parisc: Make struct parisc_driver::remove() return void	2021-08-30 10:18:25 +02:00
zorro7xx.c	scsi: zorro7xx: Fix a resource leak in zorro7xx_remove_one()	2022-04-13 20:59:15 +02:00
zorro_esp.c	…