Some drivers do I2C bitbanging by keeping the output to 0 and flipping
the GPIO direction between input and output (see for example in Linux
gpio_set_open_drain_value_commit, in drivers/gpio/gpiolib.c).
When the GPIO is set to input, the pull-up resistor brings the output
to 1, while when the GPIO is set to output, the output driver brings
the output to 0.
Implement this for the nRF51 GPIO device model. First, if both input and
output are floating, and there is a pull-up or pull-down resistor
configured, do not just set s->in, but also make any devices listening
on the output qemu_irq receive that value. Second, if the pin is
driven both internally (output pin) and externally you don't get a
short circuit if both sides drive the pin to the same value.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190317141001.3346-1-pbonzini@redhat.com
[PMM: wrapped long line]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Some trace points are attributed to the wrong source file. Happens
when we neglect to update trace-events for code motion, or add events
in the wrong place, or misspell the file name.
Clean up with help of cleanup-trace-events.pl. Same funnies as in the
previous commit, of course. Manually shorten its change to
linux-user/trace-events to */signal.c.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20190314180929.27722-6-armbru@redhat.com
Message-Id: <20190314180929.27722-6-armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tracked down with cleanup-trace-events.pl. Funnies requiring manual
post-processing:
* block.c and blockdev.c trace points are in block/trace-events.
* hw/block/nvme.c uses the preprocessor to hide its trace point use
from cleanup-trace-events.pl.
* include/hw/xen/xen_common.h trace points are in hw/xen/trace-events.
* net/colo-compare and net/filter-rewriter.c use pseudo trace points
colo_compare_udp_miscompare and colo_filter_rewriter_debug to guard
debug code.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20190314180929.27722-5-armbru@redhat.com
Message-Id: <20190314180929.27722-5-armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
We spell out sub/dir/ in sub/dir/trace-events' comments pointing to
source files. That's because when trace-events got split up, the
comments were moved verbatim.
Delete the sub/dir/ part from these comments. Gets rid of several
misspellings.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190314180929.27722-3-armbru@redhat.com
Message-Id: <20190314180929.27722-3-armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Almost all trace-events point to docs/devel/tracing.txt in a comment
right at the beginning. Touch up the ones that don't.
[Updated with Markus' new commit description wording.
--Stefan]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190314180929.27722-2-armbru@redhat.com
Message-Id: <20190314180929.27722-2-armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Or if it's not possible to honor the hinted address an error is returned
instead. This makes it easier to spot the actual failure, instead of
failing later on when the caller of xen_remap_bucket realizes the
mapping has not been created at the requested address.
Also note that at least on FreeBSD using MAP_FIXED will cause mmap to
try harder to honor the passed address.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Igor Druzhinin <igor.druzhinin@cirtix.com>
Message-Id: <20190318173731.14494-1-roger.pau@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
The UART0's interrupt vector is wrongly set to 1 in the device tree.
Use SIFIVE_U_UART0_IRQ instead.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
At present the sifive uart model only generates RX interrupt. This
updates it to generate TX interrupt so that it is more useful.
Note the TX fifo is still unimplemented.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
We can't allow the supervisor to control SEIP as this would allow the
supervisor to clear a pending external interrupt which will result in
lost a interrupt in the case a PLIC is attached. The SEIP bit must be
hardware controlled when a PLIC is attached.
This logic was previously hard-coded so SEIP was always masked even
if no PLIC was attached. This patch adds riscv_cpu_claim_interrupts
so that the PLIC can register control of SEIP. In the case of models
without a PLIC (spike), the SEIP bit remains software controlled.
This interface allows for hardware control of supervisor timer and
software interrupts by other interrupt controller models.
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
The mode variable only uses the lower 4-bits (M,H,S,U) so
replace the GCC specific __builtin_popcount with ctpop8.
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
H_IPOLL takes the CPU# of the processor to poll as an argument,
it doesn't operate on self.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190314063855.27890-1-clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
PSI registers are 64-bit.
Spotted by Coverity: CID 1399704
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <155248884690.893204.5428179144527749023.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Detected by Coverity: CID 1399702
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <155248884129.893204.2293309859485638162.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
176dccee "target/ppc/spapr: Clear partition table entry when allocating
hash table" reworked the H_REGISTER_PROCESS_TABLE hypercall, but
unfortunately due to a small error no longer correctly sets the LPCR[GTSE]
bit which allows the guest to directly execute (some types of) tlbie (TLB
flush) instructions without involving the hypervisor.
We got away with this, initially, because POWER9 did not have hypervisor
mode enabled in its msr_mask, which meant we didn't actually run hypervisor
privilege checks in TCG at all. However, da874d90 "target/ppc: add HV
support for POWER9" turned on HV support on POWER9 for the benefit of the
powernv machine type.
This exposed the earlier bug in H_REGISTER_PROCESS_TABLE, and causes guests
which rely on LPCR[GTSE] (i.e. basically all of them) to crash during early
boot when their first tlbie instruction causes an unexpected trap.
Fixes: 176dccee target/ppc/spapr: Clear partition table entry when allocating hash table
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Cleber Rosa <crosa@redhat.com>
It was never correct to not clear them. Due to commit "3912e66a3feb
virtio-vga: fix reset." this became more obvious though. The virtio
rings get properly reset now, and trying to process the stale commands
will trigger an assert in the virtio core.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20190314115358.26678-3-kraxel@redhat.com
If renderer_blocked is set do not call virtio_gpu_virgl_reset().
Instead set a flag indicating that virglrenderer needs a reset.
When renderer_blocked gets cleared do the actual reset call.
Without this we can trigger an assert in spice due to calling
spice_qxl_gl_scanout() while another operation is still running:
spice_qxl_gl_scanout: condition `qxl_state->gl_draw_cookie == GL_DRAW_COOKIE_INVALID' failed
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20190314115358.26678-2-kraxel@redhat.com
HWADDR_PRIx can't be used in tracing, use PRIx64 instead.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190312081143.24850-1-kraxel@redhat.com
The prints should indicate that we are talking about QP and not CQ.
Fixes: 98d176f8e5 ("hw/rdma: PVRDMA commands and data-path ops")
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Message-Id: <20190227085546.23690-1-kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Make sure to zero-initialize only the pvrdma_cmd_query_qp_resp and not
the whole pvrdma_cmd_resp for query_qp, in modify_qp the resp isn't used
so remove it.
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Message-Id: <20190314153031.7197-5-kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Initialize structs with {} instead of {0} to make sure that all code is
using the same convention.
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Message-Id: <20190314153031.7197-4-kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
The 'rdma_dev_res' parameter is not used in rdma_poll_cq(), so remove it.
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Message-Id: <20190314153031.7197-3-kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
The tracing.txt file is under "docs/devel" and not "docs".
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Message-Id: <20190314153031.7197-2-kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Use base object of PCIDevice in call to object_get_typename().
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Message-Id: <1552300155-25216-12-git-send-email-yuval.shaia@oracle.com>
Reviewed-by: Kamal Heib <kamalheib1@gmail.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
This hook was installed to close the device when VM is going down.
After the device is closed there is no need to be informed on VM
shutdown.
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <1552300155-25216-11-git-send-email-yuval.shaia@oracle.com>
Reviewed-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
This hook is not called and was implemented by mistake.
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <1552300155-25216-10-git-send-email-yuval.shaia@oracle.com>
Reviewed-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
The function's argument rdma_dev_res is not needed as it is stored in
the backend_dev object at init.
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <1552300155-25216-9-git-send-email-yuval.shaia@oracle.com>
Reviewed-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
When QP is destroyed the backend QP is destroyed as well. This ensures
we clean all received buffer we posted to it.
However, a contexts of these buffers are still remain in the device.
Fix it by maintaining a list of buffer's context and free them when QP
is destroyed.
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <1552300155-25216-8-git-send-email-yuval.shaia@oracle.com>
Reviewed-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Allow interrogating device internals through HMP interface.
The exposed indicators can be used for troubleshooting by developers or
sysadmin.
There is no need to expose these attributes to a management system (e.x.
libvirt) because (1) most of them are not "device-management' related
info and (2) there is no guarantee the interface is stable.
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1552300155-25216-6-git-send-email-yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
The function rdma_poll_cq is called from two contexts - completion
handler thread which sense new completion on backend channel and
explicitly as result of guest issuing poll_cq command.
Add lock to protect against concurrent executions.
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <1552300155-25216-4-git-send-email-yuval.shaia@oracle.com>
Reviewed-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
To make code more readable move handling of protected list to a
rdma_utils
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <1552300155-25216-3-git-send-email-yuval.shaia@oracle.com>
Reviewed-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Utilize error_report for all pr_err calls and some pr_dbg that are
considered as errors.
For the remaining pr_dbg calls, the important ones were replaced by
trace points while other deleted.
Some of the functions got renamed to include prefix "rdma/pvrdma"
in the function name.
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <1552300155-25216-2-git-send-email-yuval.shaia@oracle.com>
Reviewed-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
This patch fixes two issues in the hppa/parisc emulation:
1. The CPU HPA was wrong in the sense that we had negative module
offsets in the firmware-internal module table (which we ignored up to
now). Get it correct by changing the CPU HPA to 0xfffb0000 which is
greater than the DINO_HPA of 0xfff80000.
This change requires the seabios-firmware update.
2. Sven noticed that the FPU register cr10 is only able to reference up
to 8 FPUs, so let's reduce the maximum amount of SMP CPUs too.
Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20190315164130.GA7800@ls3530>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This is more proper to use PCIE_MMCFG_BUS to retrieve end_bus_number.
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-id: 20190312074953.16671-1-richardw.yang@linux.intel.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The GSIV numbers of the SPI based interrupts is not correct as
ARM_SPI_BASE was not added to the irqmap[VIRT_SMMU] value. So
this may collide with VIRTIO_MMIO irq window.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Message-id: 20190312091031.5185-1-eric.auger@redhat.com
Reviewed-by: Shannon Zhao <shannon.zhaosl@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The BCM2836 control logic module includes a simple
"local timer" which is a programmable down-counter that
can generates an interrupt. Implement this functionality.
Signed-off-by: Zoltán Baldaszti <bztemail@gmail.com>
[PMM: wrote commit message; wrapped long line; tweaked
some comments to match the final version of the code]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- file-posix: Make auto-read-only dynamic
- Add x-blockdev-reopen QMP command
- Finalize block-latency-histogram QMP command
- gluster: Build fixes for newer lib version
-----BEGIN PGP SIGNATURE-----
iQIcBAABAgAGBQJciAjXAAoJEH8JsnLIjy/WwMcP/3VawpEBO4I94gp7KNUO1yZa
rW7Rk0VO0gcvjk4fyTpQ1I3U2dfX6NwZLFMrk4oUS382QcKL9ky/TXVeeCaWxYxi
51OH6+wHQKu1MuAjM9acXRD59pfOwmI6wbKAgrungeFzHF3TvCYcLD0rY9Mhz1wp
Q7Oqkk2au6cFrmqZChCF2S5guZc0JOuwzd+LdDshRNDek2Px8a3etVq37VBUuxzK
WDvIws1IZkFI5y2WE3T8kn7YJ8NgMZ1p47tgkymDX7fkn3V766tec8ZYBy1Qz9ab
+I3UlzijuXB8vq+egEtzQfJvvTyoPrb65VFjW94ITu9onuclYo1oV5XVgx2c/NiR
WnUagbu9nft1E4+zmSrVB3Y4I7Pbwi+At/2L2dMQXIrrebK50Cqg8GW2fthhq/KM
5NavsqgdH14gOGS1yUGu06J0HO87XiJUKta4Th9M6iKvcGJqZ+F1WZGSiVEhhk1W
w0FSmWdB/XdUwWoWdQnfx8d43OK34Q3spqsAe59DvKKyORw8Uug1i43yWvSepwSf
SILmRYLOpMIrKUihh9NPIxB6QCzv/Mt7WjSEtaif+EXgQIGZhoQBjWpde0h5Dwh5
DrVz6NqDNnz0VDARPq2hgWOs4RlNpMvx5eZFJcK66RsOfLom3CL7mpnVaa+jd6e6
Nf0HPh/ubFB0IeEYbV0n
=dQt+
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block layer patches:
- file-posix: Make auto-read-only dynamic
- Add x-blockdev-reopen QMP command
- Finalize block-latency-histogram QMP command
- gluster: Build fixes for newer lib version
# gpg: Signature made Tue 12 Mar 2019 19:30:31 GMT
# gpg: using RSA key 7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* remotes/kevin/tags/for-upstream: (28 commits)
qemu-iotests: Test the x-blockdev-reopen QMP command
block: Add an 'x-blockdev-reopen' QMP command
block: Remove the AioContext parameter from bdrv_reopen_multiple()
block: Add bdrv_reset_options_allowed()
block: Add a 'mutable_opts' field to BlockDriver
block: Allow changing the backing file on reopen
block: Allow omitting the 'backing' option in certain cases
block: Handle child references in bdrv_reopen_queue()
block: Add 'keep_old_opts' parameter to bdrv_reopen_queue()
block: Freeze the backing chain for the duration of the stream job
block: Freeze the backing chain for the duration of the mirror job
block: Freeze the backing chain for the duration of the commit job
block: Allow freezing BdrvChild links
nvme: fix write zeroes offset and count
file-posix: Make auto-read-only dynamic
file-posix: Prepare permission code for fd switching
file-posix: Lock new fd in raw_reopen_prepare()
file-posix: Store BDRVRawState.reopen_state during reopen
file-posix: Factor out raw_reconfigure_getfd()
file-posix: Fix bdrv_open_flags() for snapshot=on
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Currently we do device realization like below:
hotplug_handler_pre_plug()
dc->realize()
hotplug_handler_plug()
Before we do device realization and plug, we should allocate necessary
resources and check if memory-hotplug-support property is enabled.
At the piix4 and ich9, the memory-hotplug-support property is checked at
plug stage. This means that device has been realized and mapped into guest
address space 'pc_dimm_plug()' by the time acpi plug handler is called,
where it might fail and crash QEMU due to reaching g_assert_not_reached()
(piix4) or error_abort (ich9).
Fix it by checking if memory hotplug is enabled at pre_plug stage
where we can gracefully abort hotplug request.
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
CC: Igor Mammedov <imammedo@redhat.com>
CC: Eric Blake <eblake@redhat.com>
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Message-Id: <20190301033548.6691-1-richardw.yang@linux.intel.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Claim ACS support in the generic PCIe root port to allow
passthrough of individual functions of a device to different
guests (in a nested virt.setting) with VFIO.
Without this patch, all functions of a device, such as all VFs of
an SR/IOV device, will end up in the same IOMMU group.
A similar situation occurs on Windows with Hyper-V.
In the single function device case, it also has a small cosmetic
benefit in that the root port itself is not grouped with
the device. VFIO handles that situation in that binding rules
only apply to endpoints, so it does not limit passthrough in
those cases.
Signed-off-by: Knut Omang <knut.omang@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <319460b483f566dd57487eb3dd340ed4c10aa53c.1550768238.git-series.knut.omang@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Implementing an ACS capability on downstream ports and multifunction
endpoints indicates isolation and IOMMU visibility to a finer
granularity. This creates smaller IOMMU groups in the guest and thus
more flexibility in assigning endpoints to guest userspace or an L2
guest.
Signed-off-by: Knut Omang <knut.omang@oracle.com>
Message-Id: <07489975121696f5573b0a92baaf3486ef51e35d.1550768238.git-series.knut.omang@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
This patch adds support for vhost-user-blk device to get/set
inflight buffer from/to backend.
Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190228085355.9614-6-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch introduces two new messages VHOST_USER_GET_INFLIGHT_FD
and VHOST_USER_SET_INFLIGHT_FD to support transferring a shared
buffer between qemu and backend.
Firstly, qemu uses VHOST_USER_GET_INFLIGHT_FD to get the
shared buffer from backend. Then qemu should send it back
through VHOST_USER_SET_INFLIGHT_FD each time we start vhost-user.
This shared buffer is used to track inflight I/O by backend.
Qemu should retrieve a new one when vm reset.
Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Chai Wen <chaiwen@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190228085355.9614-2-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The IO range is defined to 4 bytes with NVDIMM_ACPI_IO_LEN, so it is
more proper to use this macro instead of calculating it by sizeof.
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Message-Id: <20190227075101.6263-4-richardw.yang@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
