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freebsd-skq/usr.sbin/bhyve
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rgrimes 05da83f062 bhyve virtio needs barriers 
Under certain tight race conditions, we found that the lack of a memory
barrier in bhyve's virtio handling causes it to miss a NO_NOTIFY state
transition on block devices, resulting in guest stall. The investigation
is recorded in OS-7613. As part of the examination into bhyve's use of
barriers, one other section was found to be problematic, but only on
non-x86 ISAs with less strict memory ordering. That was addressed in
this patch as well, although it was not at all a problem on x86.

PR:		231117
Submitted by:	Patrick Mooney <patrick.mooney@joyent.com>
Reviewed by:	jhb, kib, rgrimes
Approved by:	jhb
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D19501
2019-05-18 19:32:38 +00:00
..
acpi.c Acpi MADT table correction for VM_MAXCPU > 21 2019-04-25 22:52:44 +00:00
acpi.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
ahci.h Fix style(9) space vs tab. 2018-06-14 01:34:53 +00:00
atkbdc.c Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
atkbdc.h Import bhyve_graphics into CURRENT. Thanks to all who tested 2016-07-04 03:19:06 +00:00
bhyve.8 Fix spelling of identifier 2019-01-11 14:21:59 +00:00
bhyvegc.c When this code was introduced at r300829 the author forgot to add 2018-06-13 04:00:21 +00:00
bhyvegc.h Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
bhyverun.c Revert r343634: 2019-02-01 03:09:11 +00:00
bhyverun.h Make bhyve SMBIOS table topology aware 2019-04-25 22:53:55 +00:00
block_if.c Increase the VirtIO segment count to support modern Windows guests. 2019-05-02 22:46:37 +00:00
block_if.h Increase the VirtIO segment count to support modern Windows guests. 2019-05-02 22:46:37 +00:00
bootrom.c Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
bootrom.h Fix style(9) space vs tab. 2018-06-14 01:34:53 +00:00
console.c Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
console.h Fix style(9) space vs tab. 2018-06-14 01:34:53 +00:00
consport.c Use capsicum_helpers(3) that allow us to simplify the code and its functions 2019-01-16 00:39:23 +00:00
dbgport.c Use capsicum_helpers(3) that allow us to simplify the code and its functions 2019-01-16 00:39:23 +00:00
dbgport.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
fwctl.c Always treat firmware request and response sizes as unsigned. 2018-12-04 18:28:25 +00:00
fwctl.h Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
gdb.c Drop "All rights reserved" from my copyright statements. 2019-03-06 22:11:45 +00:00
gdb.h Drop "All rights reserved" from my copyright statements. 2019-03-06 22:11:45 +00:00
inout.c Fix style(9) space vs tab. 2018-06-14 01:34:53 +00:00
inout.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
ioapic.c various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
ioapic.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
iov.c Fix several iov handling bugs in bhyve virtio-scsi backend. 2018-12-07 20:30:00 +00:00
iov.h Fix several iov handling bugs in bhyve virtio-scsi backend. 2018-12-07 20:30:00 +00:00
Makefile Stop compiling bhyve(8) with -O0. 2019-04-07 14:30:17 +00:00
Makefile.depend DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
mem.c While I was investigating CID 1194192 related with a resource leak on mrp memory 2018-06-13 11:49:34 +00:00
mem.h Fix style(9) space vs tab. 2018-06-14 01:34:53 +00:00
mevent_test.c Improve bhyve exit(3) error code. 2018-07-11 03:23:09 +00:00
mevent.c Use capsicum_helpers(3) that allow us to simplify the code and its functions 2019-01-16 00:39:23 +00:00
mevent.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
mptbl.c various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
mptbl.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
pci_ahci.c Define AHCI_PORT_IDENT and increase by 1 the VTBLK_BLK_ID_BYTES 2018-11-20 22:21:19 +00:00
pci_e82545.c Use capsicum_helpers(3) that allow us to simplify the code and its functions 2019-01-16 00:39:23 +00:00
pci_emul.c Revert r345171 pending review 2019-04-13 23:37:27 +00:00
pci_emul.h Add -s "help" and -l "help" to print a list of supported PCI and LPC devices. 2018-08-22 20:23:08 +00:00
pci_fbuf.c Revert my bogus attempt to silence coverity on r340045, it created 2018-11-07 04:20:29 +00:00
pci_hostbridge.c various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
pci_irq.c Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
pci_irq.h Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
pci_lpc.c Add -s "help" and -l "help" to print a list of supported PCI and LPC devices. 2018-08-22 20:23:08 +00:00
pci_lpc.h Add -s "help" and -l "help" to print a list of supported PCI and LPC devices. 2018-08-22 20:23:08 +00:00
pci_nvme.c bhyve: Fix NVMe data structure copy to guest 2019-04-05 16:54:20 +00:00
pci_passthru.c Use capsicum_helpers(3) that allow us to simplify the code and its functions 2019-01-16 00:39:23 +00:00
pci_uart.c various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
pci_virtio_block.c Increase the VirtIO segment count to support modern Windows guests. 2019-05-02 22:46:37 +00:00
pci_virtio_console.c Use capsicum_helpers(3) that allow us to simplify the code and its functions 2019-01-16 00:39:23 +00:00
pci_virtio_net.c Use capsicum_helpers(3) that allow us to simplify the code and its functions 2019-01-16 00:39:23 +00:00
pci_virtio_rnd.c Use capsicum_helpers(3) that allow us to simplify the code and its functions 2019-01-16 00:39:23 +00:00
pci_virtio_scsi.c Fix thread name buffer overflow. 2019-04-12 18:13:57 +00:00
pci_xhci.c In r340044 an attempt to quiet coverity warning cid 1357336 2019-02-15 16:48:15 +00:00
pci_xhci.h Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
pm.c various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
post.c various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
ps2kbd.c Remove printf for debug purpose forgotten on r340046. 2018-11-02 13:48:06 +00:00
ps2kbd.h Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
ps2mouse.c Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
ps2mouse.h Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
rfb.c Use capsicum_helpers(3) that allow us to simplify the code and its functions 2019-01-16 00:39:23 +00:00
rfb.h Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
rtc.c Fix style(9) space vs tab. 2018-06-14 01:34:53 +00:00
rtc.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
smbiostbl.c Make bhyve SMBIOS table topology aware 2019-04-25 22:53:55 +00:00
smbiostbl.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
sockstream.c Fix style(9) space vs tab. 2018-06-14 01:34:53 +00:00
sockstream.h Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
spinup_ap.c various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
spinup_ap.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
task_switch.c Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
uart_emul.c Use separate descriptors in bhyve's stdio uart backend. 2019-04-22 13:57:52 +00:00
uart_emul.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
usb_emul.c Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
usb_emul.h Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
usb_mouse.c Revert r343634: 2019-02-01 03:09:11 +00:00
vga.c Add SPDX tags to bhyve(8). 2018-06-13 03:22:08 +00:00
vga.h Fix style(9) space vs tab. 2018-06-14 01:34:53 +00:00
virtio.c bhyve virtio needs barriers 2019-05-18 19:32:38 +00:00
virtio.h Fix style(9) space vs tab. 2018-06-14 01:34:53 +00:00
xmsr.c various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
xmsr.h various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00