The specification says:
0x00 TIME_LOW R: Get current time, then return low-order 32-bits.
0x04 TIME_HIGH R: Return high 32-bits from previous TIME_LOW read.
...
To read the value, the kernel must perform an IO_READ(TIME_LOW),
which returns an unsigned 32-bit value, before an IO_READ(TIME_HIGH),
which returns a signed 32-bit value, corresponding to the higher half
of the full value.
However, we were just returning the current time for both. If the guest
is unlucky enough to read TIME_LOW and TIME_HIGH either side of an
overflow of the lower half, it will see time be in the future, before
jumping backwards on the next read, and Linux currently relies on the
atomicity guaranteed by the spec so is affected by this. Fix this
violation of the spec by caching the correct value for TIME_HIGH
whenever TIME_LOW is read, and returning that value for any TIME_HIGH
read.
Signed-off-by: Jessica Clarke <jrtc27@jrtc27.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200718004934.83174-1-jrtc27@jrtc27.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Version: GnuPG v1
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Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging
# gpg: Signature made Tue 21 Jul 2020 14:31:13 BST
# gpg: using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211
* remotes/jasowang/tags/net-pull-request:
hw/net/xgmac: Fix buffer overflow in xgmac_enet_send()
hw/net: Added plen fix for IPv6
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200721135520.72355-3-kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Commit e8c9e65816 "qom: Make "info qom-tree" show children sorted"
sorts children the simple, stupid, quadratic way. I thought the
number of children would be small enough for this not to matter. I
was wrong: there are outliers with several hundred children, e.g ARM
machines nuri and smdkc210 each have a node with 513 children.
While n^2 sorting isn't noticeable in normal, human usage even for
n=513, it can be quite noticeable in certain automated tests. In
particular, the sort made device-introspect-test even slower. Commit
3e7b80f84d "tests: improve performance of device-introspect-test" just
fixed that by cutting back its excessive use of "info qom-tree".
Sorting more efficiently makes sense regardless, so do it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200714160202.3121879-6-armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Help on device properties gets printed to stdout instead of the
monitor. If you have the monitor anywhere else, no help for you.
Broken when commit e1043d674d "qdev: use object_property_help()"
accidentally switched from qemu_printf() to printf(). Switch right
back.
Fixes: e1043d674d
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200714160202.3121879-2-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
qcow2 version 2 images don't support the zero flag for clusters, so for
write_zeroes requests, we return -ENOTSUP and get explicit zero buffer
writes. If the image doesn't have a backing file, we can do better: Just
discard the respective clusters.
This is relevant for 'qemu-img convert -O qcow2 -n', where qemu-img has
to assume that the existing target image may contain any data, so it has
to write zeroes. Without this patch, this results in a fully allocated
target image, even if the source image was empty.
Reported-by: Nir Soffer <nsoffer@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200721135520.72355-2-kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The `detect-zeroes=unmap` option may issue unaligned
`FALLOC_FL_PUNCH_HOLE` requests, raw block devices can (and will) return
`EINVAL`, qemu should then write the zeroes to the blockdev instead of
issuing an `IO_ERROR`.
The problem can be reprodced like this:
$ qemu-io -c 'write -P 0 42 1234' --image-opts driver=host_device,filename=/dev/loop0,detect-zeroes=unmap
write failed: Invalid argument
Signed-off-by: Antoine Damhet <antoine.damhet@blade-group.com>
Message-Id: <20200717135603.51180-1-antoine.damhet@blade-group.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200714160202.3121879-5-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
object_get_canonical_path_component() returns a malloced copy of a
property name on success, null on failure.
19 of its 25 callers immediately free the returned copy.
Change object_get_canonical_path_component() to return the property
name directly. Since modifying the name would be wrong, adjust the
return type to const char *.
Drop the free from the 19 callers become simpler, add the g_strdup()
to the other six.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200714160202.3121879-4-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
A buffer overflow issue was reported by Mr. Ziming Zhang, CC'd here. It
occurs while sending an Ethernet frame due to missing break statements
and improper checking of the buffer size.
Reported-by: Ziming Zhang <ezrakiez@gmail.com>
Signed-off-by: Mauro Matteo Cascella <mcascell@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1708065
With network backend with 'virtual header' - there was an issue
in 'plen' field. Overall, during TSO, 'plen' would be changed,
but with 'vheader' this field should be set to the size of the
payload itself instead of '0'.
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
- Let LUKS images only be shared between VMs if the guest device was
configured to allow that
- Fix abort() from bdrv_aio_cancel() for guest devices without a BDS
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Merge remote-tracking branch 'remotes/maxreitz/tags/pull-block-2020-07-21' into staging
Block patches for 5.1:
- Let LUKS images only be shared between VMs if the guest device was
configured to allow that
- Fix abort() from bdrv_aio_cancel() for guest devices without a BDS
# gpg: Signature made Tue 21 Jul 2020 12:47:17 BST
# gpg: using RSA key 91BEB60A30DB3E8857D11829F407DB0061D5CF40
# gpg: issuer "mreitz@redhat.com"
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>" [full]
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1 1829 F407 DB00 61D5 CF40
* remotes/maxreitz/tags/pull-block-2020-07-21:
block: fix bdrv_aio_cancel() for ENOMEDIUM requests
qemu-iotests: add testcase for bz #1857490
block/crypto: disallow write sharing by default
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
To make deallocating partially constructed objects work, the
visit_type_STRUCT() need to succeed without doing anything when passed
a null object.
Commit cdd2b228b9 "qapi: Smooth visitor error checking in generated
code" broke that. To reproduce, run tests/test-qobject-input-visitor
with AddressSanitizer:
==4353==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 16 byte(s) in 1 object(s) allocated from:
#0 0x7f192d0c5d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f192cd21b10 in g_malloc0 (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x51b10)
#2 0x556725f6bbee in visit_next_list qapi/qapi-visit-core.c:86
#3 0x556725f49e15 in visit_type_UserDefOneList tests/test-qapi-visit.c:474
#4 0x556725f4489b in test_visitor_in_fail_struct_in_list tests/test-qobject-input-visitor.c:1086
#5 0x7f192cd42f29 (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x72f29)
SUMMARY: AddressSanitizer: 16 byte(s) leaked in 1 allocation(s).
Test case /visitor/input/fail/struct-in-list feeds a list with a bad
element to the QObject input visitor. Visiting that element duly
fails, and aborts the visit with the list only partially constructed:
the faulty object is null. Cleaning up the partially constructed list
visits that null object, fails, and aborts the visit before the list
node gets freed.
Fix the the generated visit_type_STRUCT() to succeed for null objects.
Fixes: cdd2b228b9
Reported-by: Li Qiang <liq3ea@163.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200716150617.4027356-1-armbru@redhat.com>
Tested-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
bdrv_aio_cancel() calls aio_poll() on the AioContext for the given I/O
request until it has completed. ENOMEDIUM requests are special because
there is no BlockDriverState when the drive has no medium!
Define a .get_aio_context() function for BlkAioEmAIOCB requests so that
bdrv_aio_cancel() can find the AioContext where the completion BH is
pending. Without this function bdrv_aio_cancel() aborts on ENOMEDIUM
requests!
libFuzzer triggered the following assertion:
cat << EOF | qemu-system-i386 -M pc-q35-5.0 \
-nographic -monitor none -serial none \
-qtest stdio -trace ide\*
outl 0xcf8 0x8000fa24
outl 0xcfc 0xe106c000
outl 0xcf8 0x8000fa04
outw 0xcfc 0x7
outl 0xcf8 0x8000fb20
write 0x0 0x3 0x2780e7
write 0xe106c22c 0xd 0x1130c218021130c218021130c2
write 0xe106c218 0x15 0x110010110010110010110010110010110010110010
EOF
ide_exec_cmd IDE exec cmd: bus 0x56170a77a2b8; state 0x56170a77a340; cmd 0xe7
ide_reset IDEstate 0x56170a77a340
Aborted (core dumped)
(gdb) bt
#1 0x00007ffff4f93895 in abort () at /lib64/libc.so.6
#2 0x0000555555dc6c00 in bdrv_aio_cancel (acb=0x555556765550) at block/io.c:2745
#3 0x0000555555dac202 in blk_aio_cancel (acb=0x555556765550) at block/block-backend.c:1546
#4 0x0000555555b1bd74 in ide_reset (s=0x555557213340) at hw/ide/core.c:1318
#5 0x0000555555b1e3a1 in ide_bus_reset (bus=0x5555572132b8) at hw/ide/core.c:2422
#6 0x0000555555b2aa27 in ahci_reset_port (s=0x55555720eb50, port=2) at hw/ide/ahci.c:650
#7 0x0000555555b29fd7 in ahci_port_write (s=0x55555720eb50, port=2, offset=44, val=16) at hw/ide/ahci.c:360
#8 0x0000555555b2a564 in ahci_mem_write (opaque=0x55555720eb50, addr=556, val=16, size=1) at hw/ide/ahci.c:513
#9 0x000055555598415b in memory_region_write_accessor (mr=0x55555720eb80, addr=556, value=0x7fffffffb838, size=1, shift=0, mask=255, attrs=...) at softmmu/memory.c:483
Looking at bdrv_aio_cancel:
2728 /* async I/Os */
2729
2730 void bdrv_aio_cancel(BlockAIOCB *acb)
2731 {
2732 qemu_aio_ref(acb);
2733 bdrv_aio_cancel_async(acb);
2734 while (acb->refcnt > 1) {
2735 if (acb->aiocb_info->get_aio_context) {
2736 aio_poll(acb->aiocb_info->get_aio_context(acb), true);
2737 } else if (acb->bs) {
2738 /* qemu_aio_ref and qemu_aio_unref are not thread-safe, so
2739 * assert that we're not using an I/O thread. Thread-safe
2740 * code should use bdrv_aio_cancel_async exclusively.
2741 */
2742 assert(bdrv_get_aio_context(acb->bs) == qemu_get_aio_context());
2743 aio_poll(bdrv_get_aio_context(acb->bs), true);
2744 } else {
2745 abort(); <===============
2746 }
2747 }
2748 qemu_aio_unref(acb);
2749 }
Fixes: 02c50efe08 ("block: Add bdrv_aio_cancel_async")
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Buglink: https://bugs.launchpad.net/qemu/+bug/1878255
Originally-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20200720100141.129739-1-stefanha@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Just return in case module_load_qom_one(NULL) is called.
vga_interface_available() can do that.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20200720100352.2477-3-kraxel@redhat.com>
Checking the enable/disable state of tracepoints via
trace_event_get_state_backends() does not work for modules.
qxl checks the state for a small optimization (avoid g_strndup
call in case log_buf will not be used anyway), so we can just
drop that check for modular builds.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20200720100352.2477-2-kraxel@redhat.com>
QEMU XHCI advertises AC64 (64-bit addressing) but doesn't allow
64-bit mode access in "runtime" and "operational" MemoryRegionOps.
Set the max_access_size based on sizeof(dma_addr_t) as AC64 is set.
XHCI specs:
"If the xHC supports 64-bit addressing (AC64 = ‘1’), then software
should write 64-bit registers using only Qword accesses. If a
system is incapable of issuing Qword accesses, then writes to the
64-bit address fields shall be performed using 2 Dword accesses;
low Dword-first, high-Dword second. If the xHC supports 32-bit
addressing (AC64 = ‘0’), then the high Dword of registers containing
64-bit address fields are unused and software should write addresses
using only Dword accesses"
The problem has been detected with SLOF, as linux kernel always accesses
registers using 32-bit access even if AC64 is set and revealed by
5d971f9e67 ("memory: Revert "memory: accept mismatching sizes in memory_region_access_valid"")
Suggested-by: Alexey Kardashevskiy <aik@au1.ibm.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-id: 20200721083322.90651-1-lvivier@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Test that we can't write-share raw luks images by default,
but we still can with share-rw=on
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20200719122059.59843-3-mlevitsk@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
My commit 'block/crypto: implement the encryption key management'
accidently allowed raw luks images to be shared between different
qemu processes without share-rw=on explicit override.
Fix that.
Fixes: bbfdae91fb ("block/crypto: implement the encryption key management")
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1857490
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20200719122059.59843-2-mlevitsk@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
nd_table[] contains NIC configuration for boards to pick up. Device
code has no business looking there. Several devices do it anyway.
Two of them already have a suitable FIXME comment: "allwinner-a10" and
"msf2-soc". Copy it to the others: "allwinner-h3", "xlnx-versal",
"xlnx,zynqmp", "sparc32-ledma", "riscv.sifive.u.soc".
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200715140440.3540942-3-armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Watch this:
$ qemu-system-aarch64 -M ast2600-evb -S -display none -qmp stdio
{"QMP": {"version": {"qemu": {"micro": 50, "minor": 0, "major": 5}, "package": "v5.0.0-2464-g3a9163af4e"}, "capabilities": ["oob"]}}
{"execute": "qmp_capabilities"}
{"return": {}}
{"execute": "device-list-properties", "arguments": {"typename": "msf2-soc"}}
Unsupported NIC model: ftgmac100
armbru@dusky:~/work/images$ echo $?
1
This is what breaks "make check SPEED=slow".
Root cause is m2sxxx_soc_initfn()'s messing with nd_table[] via
qemu_check_nic_model(). That's wrong.
We fixed the exact same bug for device "allwinner-a10" in commit
8aabc5437b "hw/arm/allwinner-a10: Do not use nd_table in instance_init
function". Fix this instance the same way: move the offending code to
m2sxxx_soc_realize(), where it's less wrong, and add a FIXME comment.
Fixes: 05b7374a58 ("msf2: Add EMAC block to SmartFusion2 SoC")
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200715140440.3540942-2-armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The file docs/devel/fuzzing.txt should be in this section, too, and add
myself as a reviewer (since I often take the fuzzer patches through the
qtest-next tree, I should be notified on patches, too).
Message-Id: <20200721053926.17197-1-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20200706195534.14962-5-alxndr@bu.edu>
[thuth: Replaced --enable-sanitizers with --enable-fuzzing]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20200706195534.14962-3-alxndr@bu.edu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
We already have a nice --enable-sanitizers option to enable
AddressSanitizer. There is no reason to duplicate and force this
functionality in --enable-fuzzing. In the future, if more sanitizers are
added to --enable-sanitizers, it might be impossible to build with both
--enable-sanitizers and --enable-fuzzing, since not all sanitizers are
compatible with libFuzzer. In that case, we could enable ASAN with
--extra-cflags="-fsanitize=address"
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20200706195534.14962-2-alxndr@bu.edu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
[thuth: Added missing $CFLAGS]
Signed-off-by: Thomas Huth <thuth@redhat.com>
This tries to build and run the fuzzers with the same build-script used
by oss-fuzz. This doesn't guarantee that the builds on oss-fuzz will
also succeed, since oss-fuzz provides its own compiler and fuzzer vars,
but it can catch changes that are not compatible with the the
./scripts/oss-fuzz/build.sh script.
The strange way of finding fuzzer binaries stems from the method used by
oss-fuzz:
https://github.com/google/oss-fuzz/blob/master/infra/base-images/base-runner/targets_list
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20200720073223.22945-1-thuth@redhat.com>
[thuth: Tweak the "script" to make it work, exclude slirp test, etc.]
Signed-off-by: Thomas Huth <thuth@redhat.com>
We freed the string containing the final datadir path, but did not free
the path to the executable's directory that we get from
g_path_get_dirname(). Fix that.
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20200717163523.1591-1-alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The build.sh script only copies qemu-fuzz-i386 to the destination folder,
so we can speed up the compilation step quite a bit by not compiling the
other targets here.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Document the arm 'virt' board, which has been undocumented
for far too long given that it is the main recommended board
type for arm guests.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20200713175746.5936-5-peter.maydell@linaro.org
Add skeletal documentation of the gumstix boards
('connex' and 'verdex').
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20200713175746.5936-4-peter.maydell@linaro.org
Add skeletal documentation of the collie board.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20200713175746.5936-3-peter.maydell@linaro.org
Add skeletal documentation of the canon-a1100 board.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20200713175746.5936-2-peter.maydell@linaro.org
In armsse_realize() we have a loop over [0, info->num_cpus), which
indexes into various fixed-size arrays in the ARMSSE struct. This
confuses Coverity, which warns that we might overrun those arrays
(CID 1430326, 1430337, 1430371, 1430414, 1430430). This can't
actually happen, because the info struct is always one of the entries
in the armsse_variants[] array and num_cpus is either 1 or 2; we also
already assert in armsse_init() that num_cpus is not too large.
However, adding an assert to armsse_realize() like the one in
armsse_init() should help Coverity figure out that these code paths
aren't possible.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200713143716.9881-1-peter.maydell@linaro.org
Add documentation comments for the various qdev functions
related to creating and connecting GPIO lines.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200711142425.16283-4-peter.maydell@linaro.org
Add a doc comment for qdev_unrealize(), to go with the new
documentation for the realize part of the qdev lifecycle.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200711142425.16283-3-peter.maydell@linaro.org
The doc-comments which document the qdev API are split between the
header file and the C source files, because as a project we haven't
been consistent about where we put them.
Move all the doc-comments in qdev.c to the header files, so that
users of the APIs don't have to look at the implementation files for
this information.
In the process, unify them into our doc-comment format and expand on
them in some cases to clarify expected use cases.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200711142425.16283-2-peter.maydell@linaro.org
Implement qemu_get_thread_id() for OpenBSD hosts, using
getthrid().
Signed-off-by: David Carlier <devnexen@gmail.com>
Reviewed-by: Brad Smith <brad@comstyle.com>
Message-id: CA+XhMqxD6gQDBaj8tX0CMEj3si7qYKsM8u1km47e_-U7MC37Pg@mail.gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: tidied up commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When MTE is enabled, tag memory must exist for all RAM.
It might be possible to simultaneously hot plug tag memory
alongside the corresponding normal memory, but for now just
disable hotplug.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200713213341.590275-4-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
While we expect KVM to support MTE at some future point,
it certainly won't be ready in time for qemu 5.1.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200713213341.590275-3-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Control this cpu feature via a machine property, much as we do
with secure=on, since both require specialized support in the
machine setup to be functional.
Default MTE to off, since this feature implies extra overhead.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200713213341.590275-2-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Here are some assorted fixes for qemu-5.1:
* SLOF update with improved TPM handling, and fix for possible stack
overflows on many-vcpu machines
* Fix for NUMA distances on NVLink2 attached GPU memory nodes
* Fixes to fail more gracefully on attempting to plug unsupported PCI bridge types
* Don't allow pnv-psi device to be user created
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Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.1-20200720' into staging
ppc patch queue 20200720
Here are some assorted fixes for qemu-5.1:
* SLOF update with improved TPM handling, and fix for possible stack
overflows on many-vcpu machines
* Fix for NUMA distances on NVLink2 attached GPU memory nodes
* Fixes to fail more gracefully on attempting to plug unsupported PCI bridge types
* Don't allow pnv-psi device to be user created
# gpg: Signature made Mon 20 Jul 2020 06:29:21 BST
# gpg: using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-5.1-20200720:
pseries: Update SLOF firmware image
spapr: Add a new level of NUMA for GPUs
spapr_pci: Robustify support of PCI bridges
ppc/pnv: Make PSI device types not user creatable
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
