Matthew Rosato 03451953c7 s390x/pci: reset ISM passthrough devices on shutdown and system reset ... ISM device firmware stores unique state information that can can cause a wholesale unmap of the associated IOMMU (e.g. when we get a termination signal for QEMU) to trigger firmware errors because firmware believes we are attempting to invalidate entries that are still in-use by the guest OS (when in fact that guest is in the process of being terminated or rebooted). To alleviate this, register both a shutdown notifier (for unexpected termination cases e.g. virsh destroy) as well as a reset callback (for cases like guest OS reboot). For each of these scenarios, trigger PCI device reset; this is enough to indicate to firmware that the IOMMU is no longer in-use by the guest OS, making it safe to invalidate any associated IOMMU entries. Fixes: 15d0e7942d ("s390x/pci: don't fence interpreted devices without MSI-X") Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Message-Id: <20221209195700.263824-1-mjrosato@linux.ibm.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> [thuth: Adjusted the hunk in s390-pci-vfio.c due to different context] Signed-off-by: Thomas Huth <thuth@redhat.com>		2022-12-15 15:02:34 +01:00
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authz
block	block: Make bdrv_child_get_parent_aio_context I/O	2022-11-10 14:58:34 +01:00
chardev
crypto	crypto: Support export akcipher to pkcs8	2022-11-02 06:56:32 -04:00
disas
exec	migration: Use non-atomic ops for clear log bitmap	2022-11-21 11:58:10 +01:00
fpu
hw	s390x/pci: reset ISM passthrough devices on shutdown and system reset	2022-12-15 15:02:34 +01:00
io	io: Tidy up fat-fingered parameter name	2022-12-14 16:19:35 +01:00
libdecnumber
migration
monitor	qapi misc: Elide redundant has_FOO in generated C	2022-12-14 20:04:47 +01:00
net	Add G_GNUC_PRINTF to function qemu_set_info_str and fix related issues	2022-11-27 13:36:17 -05:00
qapi
qemu	qemu-config: Make config_parse_qdict() return bool	2022-12-14 16:19:35 +01:00
qom
scsi
semihosting
standard-headers
sysemu	cryptodev: Add a lkcf-backend for cryptodev	2022-11-02 06:56:32 -04:00
tcg
ui
user
elf.h
glib-compat.h
qemu-io.h
qemu-main.h