Commit Graph

95328 Commits

Author SHA1 Message Date
Thomas Huth 21abf010bb qemu-options: Limit the -enable-kvm option to the targets that support it
There is no need to present the user with -enable-kvm if there
is no support for KVM on the corresponding target.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220427134906.348118-1-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:52:22 +02:00
Paolo Bonzini 2cb2f5804c meson, configure: move --enable-module-upgrades to meson
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:52:22 +02:00
Paolo Bonzini 215b00a542 meson: remove CONFIG_XEN_PCI_PASSTHROUGH from config-target.h
CONFIG_XEN_PCI_PASSTHROUGH is just a global configuration option;
it is never used in the source files, so there is no need to put
CONFIG_XEN_PCI_PASSTHROUGH in config-target.h or even in config-host.h.

This inaccuracy was copied over from the configure script in commit
8a19980e3f ("configure: move accelerator logic to meson", 2020-10-03).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:52:22 +02:00
Paolo Bonzini 7544060ef3 meson, configure: move libgio test to meson
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:52:22 +02:00
Paolo Bonzini 0dae95d4ad meson, configure: move usbfs test to meson
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:52:22 +02:00
Paolo Bonzini 2edd2c04c2 meson, configure: move keyctl test to meson
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:52:22 +02:00
Paolo Bonzini 3730a7341f meson, configure: move RDMA options to meson
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:52:20 +02:00
Paolo Bonzini 88b6e618fd configure, meson: move OpenGL check to meson
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:51:57 +02:00
Paolo Bonzini 28609749fe configure: move --enable/--disable-debug-info to second option parsing pass
$debug_info is not needed anywhere except in the final meson invocation,
no need to special case it.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:51:57 +02:00
Paolo Bonzini df42fa7d47 configure: gcov should not exclude fortify-source
There is no reason other than history (dating back to commit 1d728c3946, "tests: add gcov
support", 2013-01-06) for this, remove this unnecessary conditional.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:51:57 +02:00
Paolo Bonzini 2ed197d66e configure: pc-bios/qemu-icon.bmp does not exist
The file has been removed in commit a8260d3876 ("ui: install logo icons to
$prefix/share/icons", 2019-01-21), do not try to symlink it in the build tree.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:51:57 +02:00
Paolo Bonzini 6e4442090b qga: wixl: get path to sysroot from pkg-config as intended
The .wxs file uses $(var.Mingw_bin) while configure/meson have always
used Mingw_dlls.  Fix them to match what was probably intended.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:51:57 +02:00
Paolo Bonzini ff8ca58d20 configure: remove dead code
tcg_interpreter is never written, it is purely a meson option;
trace_backends is never read.

And SeaBIOS is only build from the source tree with roms/Makefile,
so the config.mak file is unused.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:51:57 +02:00
Paolo Bonzini d065177e01 meson: show final set of compiler flags
The actual set of compiler flags can grow beyond what is found by the configure
script, for example if gprof is used.  Show the full set in the summary.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:51:56 +02:00
Paul Brook d1da229ff1 i386: pcmpestr 64-bit sign extension bug
The abs1 function in ops_sse.h only works sorrectly when the result fits
in a signed int. This is fine most of the time because we're only dealing
with byte sized values.

However pcmp_elen helper function uses abs1 to calculate the absolute value
of a cpu register. This incorrectly truncates to 32 bits, and will give
the wrong anser for the most negative value.

Fix by open coding the saturation check before taking the absolute value.

Signed-off-by: Paul Brook <paul@nowt.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:51:56 +02:00
Paolo Bonzini e960a7ee46 remove -writeconfig
Like -set and -readconfig, it would not really be too hard to
extend -writeconfig to parsing mechanisms other than QemuOpts.
However, the uses of -writeconfig are substantially more
limited, as it is generally easier to write the configuration
by hand in the first place.  In addition, -writeconfig does
not even try to detect cases where it prints incorrect
syntax (for example if values have a quote in them, since
qemu_config_parse does not support any kind of escaping.
Just remove it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414145721.326866-1-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:51:56 +02:00
Michael Tokarev 1f3f2bfe0e configure: make fortify_source=yes by default
Commit c87ea11631 "configure: add --without-default-feature"
changed fortify_source from "yes" to "$default_feature". But there's
no option to turn it on, we only turn it off for debug build.  I think
this should always be initialized to "yes" in the first place.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Message-Id: <20220422100825.3692002-1-mjt@msgid.tls.msk.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-28 08:51:56 +02:00
Haiyue Wang 5c08edd1fa error-report: fix g_date_time_format assertion
The 'g_get_real_time' returns the number of microseconds since January
1, 1970 UTC, but 'g_date_time_new_from_unix_utc' needs the number of
seconds, so it will cause the invalid time input:

(process:279642): GLib-CRITICAL (recursed) **: g_date_time_format: assertion 'datetime != NULL' failed

Call function 'g_date_time_new_now_utc' instead, it has the same result
as 'g_date_time_new_from_unix_utc(g_get_real_time() / G_USEC_PER_SEC)';

Fixes: 73dab893b5 ("error-report: replace deprecated g_get_current_time() with glib >= 2.62")
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220424105036.291370-1-haiyue.wang@intel.com>
2022-04-28 08:51:56 +02:00
Richard Henderson cf6f26d6f9 vnc: add display-update monitor command.
screendump: add png support.
 vmsvga: screen update fix.
 i386: sev setup for -bios loaded firmware
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Merge tag 'kraxel-20220427-pull-request' of git://git.kraxel.org/qemu into staging

vnc: add display-update monitor command.
screendump: add png support.
vmsvga: screen update fix.
i386: sev setup for -bios loaded firmware

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# gpg:                using RSA key A0328CFFB93A17A79901FE7D4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [undefined]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [undefined]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* tag 'kraxel-20220427-pull-request' of git://git.kraxel.org/qemu:
  i386: firmware parsing and sev setup for -bios loaded firmware
  i386: factor out x86_firmware_configure()
  i386: move bios load error message
  avocado/vnc: add test_change_listen
  qapi/ui: add 'display-update' command for changing listen address
  ui/vnc: refactor arrays of addresses to SocketAddressList
  Added parameter to take screenshot with screendump as PNG
  Replacing CONFIG_VNC_PNG with CONFIG_PNG
  hw/display/vmware_vga: do not discard screen updates

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-04-27 10:49:28 -07:00
Gerd Hoffmann a8152c4e46 i386: firmware parsing and sev setup for -bios loaded firmware
Don't register firmware as rom, not needed (see comment).
Add x86_firmware_configure() call for proper sev initialization.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20220425135051.551037-4-kraxel@redhat.com>
2022-04-27 07:51:01 +02:00
Gerd Hoffmann 966f1ca56f i386: factor out x86_firmware_configure()
move sev firmware setup to separate function so it can be used from
other code paths.  No functional change.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20220425135051.551037-3-kraxel@redhat.com>
2022-04-27 07:51:01 +02:00
Gerd Hoffmann 2aa6a39bc8 i386: move bios load error message
Switch to usual goto-end-of-function error handling style.
No functional change.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20220425135051.551037-2-kraxel@redhat.com>
2022-04-27 07:51:01 +02:00
Vladimir Sementsov-Ogievskiy 0d90da8203 avocado/vnc: add test_change_listen
Add simple test-case for new display-update qmp command.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220401143936.356460-4-vsementsov@openvz.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-04-27 07:51:01 +02:00
Vladimir Sementsov-Ogievskiy abea19468e qapi/ui: add 'display-update' command for changing listen address
Add possibility to change addresses where VNC server listens for new
connections. Prior to 6.0 this functionality was available through
'change' qmp command which was deleted.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220401143936.356460-3-vsementsov@openvz.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-04-27 07:51:01 +02:00
Vladimir Sementsov-Ogievskiy d708f99d85 ui/vnc: refactor arrays of addresses to SocketAddressList
Let's use SocketAddressList instead of dynamic arrays.
Benefits:
 - Automatic cleanup: don't need specific freeing function and drop
   some gotos.
 - Less indirection: no triple asterix anymore!
 - Prepare for the following commit, which will reuse new interface of
   vnc_display_listen().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220401143936.356460-2-vsementsov@openvz.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-04-27 07:51:01 +02:00
Kshitij Suri 9a0a119a38 Added parameter to take screenshot with screendump as PNG
Currently screendump only supports PPM format, which is un-compressed. Added
a "format" parameter to QMP and HMP screendump command to support PNG image
capture using libpng.

QMP example usage:
{ "execute": "screendump", "arguments": { "filename": "/tmp/image",
"format":"png" } }

HMP example usage:
screendump /tmp/image -f png

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/718

Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20220408071336.99839-3-kshitij.suri@nutanix.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-04-27 07:51:01 +02:00
Kshitij Suri 95f8510ef4 Replacing CONFIG_VNC_PNG with CONFIG_PNG
Libpng is only detected if VNC is enabled currently. This patch adds a
generalised png option in the meson build which is aimed to replace use of
CONFIG_VNC_PNG with CONFIG_PNG.

Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220408071336.99839-2-kshitij.suri@nutanix.com>

[ kraxel: add meson-buildoptions.sh updates ]
[ kraxel: fix centos8 testcase ]
[ kraxel: update --enable-vnc-png too ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

--enable-vnc-png fixup

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-04-27 07:50:28 +02:00
Richard Henderson 34723f5937 Fix s390x ICMH cc computation.
Minor adjustments to satisfy Coverity.
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Merge tag 'pull-tcg-20220426' of https://gitlab.com/rth7680/qemu into staging

Fix s390x ICMH cc computation.
Minor adjustments to satisfy Coverity.

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# gpg: Signature made Tue 26 Apr 2022 09:37:43 PM PDT
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]

* tag 'pull-tcg-20220426' of https://gitlab.com/rth7680/qemu:
  softfloat: Use FloatRelation for fracN_cmp
  softfloat: Use FloatRelation within partsN_compare
  softfloat: Fix declaration of partsN_compare
  target/i386: Suppress coverity warning on fsave/frstor
  target/s390x: Fix the accumulation of ccm in op_icm
  accel/tcg: Assert mmu_idx in range before use in cputlb

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-04-26 21:40:25 -07:00
Richard Henderson dee3fcfbb3 softfloat: Use FloatRelation for fracN_cmp
Since the caller, partsN_compare, is now exclusively
using FloatRelation, it's clearer to use it here too.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220401132240.79730-4-richard.henderson@linaro.org>
2022-04-26 20:01:55 -07:00
Richard Henderson 9343c88444 softfloat: Use FloatRelation within partsN_compare
As the return type is FloatRelation, it's clearer to
use the type for 'cmp' within the function.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220401132240.79730-3-richard.henderson@linaro.org>
2022-04-26 20:01:55 -07:00
Richard Henderson b880867f15 softfloat: Fix declaration of partsN_compare
The declaration used 'int', while the definition used 'FloatRelation'.
This should have resulted in a compiler error, but mysteriously didn't.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220401132240.79730-2-richard.henderson@linaro.org>
2022-04-26 20:01:55 -07:00
Richard Henderson 0cbc135917 target/i386: Suppress coverity warning on fsave/frstor
Coverity warns that 14 << data32 may overflow with respect
to the target_ulong to which it is subsequently added.
We know this wasn't true because data32 is in [1,2],
but the suggested fix is perfectly fine.

Fixes: Coverity CID 1487135, 1487256
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
Message-Id: <20220401184635.327423-1-richard.henderson@linaro.org>
2022-04-26 19:59:51 -07:00
Richard Henderson 21641ee5a9 target/s390x: Fix the accumulation of ccm in op_icm
Coverity rightly reports that 0xff << pos can overflow.
This would affect the ICMH instruction.

Fixes: Coverity CID 1487161
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220401193659.332079-1-richard.henderson@linaro.org>
2022-04-26 19:58:43 -07:00
Richard Henderson b826044fc0 accel/tcg: Assert mmu_idx in range before use in cputlb
Coverity reports out-of-bound accesses within cputlb.c.
This should be a false positive due to how the index is
decoded from MemOpIdx.  To be fair, nothing is checking
the correct bounds during encoding either.

Assert index in range before use, both to catch user errors
and to pacify static analysis.

Fixes: Coverity CID 1487120, 1487127, 1487170, 1487196, 1487215, 1487238
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220401170813.318609-1-richard.henderson@linaro.org>
2022-04-26 19:57:56 -07:00
Richard Henderson a72d900809 nbd patches for 2022-04-26
- Paolo Bonzini: thread-safety improvements to NBD client
 - Vladimir Sementsov-Ogievsky: finer-grained selection of bitmaps during
   nbd-export
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Merge tag 'pull-nbd-2022-04-26' of https://repo.or.cz/qemu/ericb into staging

nbd patches for 2022-04-26

- Paolo Bonzini: thread-safety improvements to NBD client
- Vladimir Sementsov-Ogievsky: finer-grained selection of bitmaps during
  nbd-export

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# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
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* tag 'pull-nbd-2022-04-26' of https://repo.or.cz/qemu/ericb:
  nbd: document what is protected by the CoMutexes
  nbd: take receive_mutex when reading requests[].receiving
  nbd: move s->state under requests_lock
  nbd: code motion and function renaming
  nbd: use a QemuMutex to synchronize yanking, reconnection and coroutines
  nbd: keep send_mutex/free_sema handling outside nbd_co_do_establish_connection
  nbd: remove peppering of nbd_client_connected
  nbd: mark more coroutine_fns
  nbd: safeguard against waking up invalid coroutine
  iotests/223: check new possibility of exporting bitmaps by node/name
  qapi: nbd-export: allow select bitmaps by node/name pair
  qapi: rename BlockDirtyBitmapMergeSource to BlockDirtyBitmapOrStr

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-04-26 14:39:09 -07:00
Richard Henderson 88d5814e6b Fix nios2-linux-user syscalls.
Fix nios2-linux-user sigreturn.
 Enable tests for nios2-linux-user.
 Remove special handling of SIGSEGV.
 Check supervisor for eret, bret.
 Split special registers out of env->regs[].
 Clean up interrupt processing.
 Raise unaligned data and destination exceptions.
 Set TLBMISC fields correctly on exceptions.
 Prevent writes to read-only or reserved control fields.
 Use tcg_constant_tl().
 Implement shadow register sets.
 Implement external interrupt controller interface.
 Implement vectored interrupt controller.
 Enable semihosting tests for nios2-softmmu.
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Merge tag 'pull-nios2-20220426' of https://gitlab.com/rth7680/qemu into staging

Fix nios2-linux-user syscalls.
Fix nios2-linux-user sigreturn.
Enable tests for nios2-linux-user.
Remove special handling of SIGSEGV.
Check supervisor for eret, bret.
Split special registers out of env->regs[].
Clean up interrupt processing.
Raise unaligned data and destination exceptions.
Set TLBMISC fields correctly on exceptions.
Prevent writes to read-only or reserved control fields.
Use tcg_constant_tl().
Implement shadow register sets.
Implement external interrupt controller interface.
Implement vectored interrupt controller.
Enable semihosting tests for nios2-softmmu.

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* tag 'pull-nios2-20220426' of https://gitlab.com/rth7680/qemu: (68 commits)
  tests/tcg/nios2: Add test-shadow-1
  tests/tcg/nios2: Add semihosting multiarch tests
  hw/nios2: Machine with a Vectored Interrupt Controller
  hw/nios2: Move memory regions into Nios2Machine
  hw/nios2: Introduce Nios2MachineState
  hw/intc: Vectored Interrupt Controller (VIC)
  linux-user/nios2: Handle various SIGILL exceptions
  target/nios2: Advance pc when raising exceptions
  target/nios2: Implement EIC interrupt processing
  target/nios2: Update helper_eret for shadow registers
  target/nios2: Implement rdprs, wrprs
  target/nios2: Introduce shadow register sets
  target/nios2: Implement Misaligned destination exception
  target/nios2: Use tcg_gen_lookup_and_goto_ptr
  target/nios2: Use gen_goto_tb for DISAS_TOO_MANY
  target/nios2: Hoist set of is_jmp into gen_goto_tb
  target/nios2: Create gen_jumpr
  target/nios2: Enable unaligned traps for system mode
  target/nios2: Drop CR_STATUS_EH from tb->flags
  target/nios2: Introduce dest_gpr
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-04-26 13:12:37 -07:00
Paolo Bonzini 620c5cb5da nbd: document what is protected by the CoMutexes
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414175756.671165-10-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:16:42 -05:00
Paolo Bonzini a80a9a1c73 nbd: take receive_mutex when reading requests[].receiving
requests[].receiving is set by nbd_receive_replies() under the receive_mutex;
Read it under the same mutex as well.  Waking up receivers on errors happens
after each reply finishes processing, in nbd_co_receive_one_chunk().
If there is no currently-active reply, there are two cases:

* either there is no active request at all, in which case no
element of request[] can have .receiving = true

* or nbd_receive_replies() must be running and owns receive_mutex;
in that case it will get back to nbd_co_receive_one_chunk() because
the socket has been shutdown, and all waiting coroutines will wake up
in turn.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414175756.671165-9-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:16:41 -05:00
Paolo Bonzini dba5156c0e nbd: move s->state under requests_lock
Remove the confusing, and most likely wrong, atomics.  The only function
that used to be somewhat in a hot path was nbd_client_connected(),
but it is not anymore after the previous patches.

The same logic is used both to check if a request had to be reissued
and also in nbd_reconnecting_attempt().  The former cases are outside
requests_lock, while nbd_reconnecting_attempt() does have the lock,
therefore the two have been separated in the previous commit.
nbd_client_will_reconnect() can simply take s->requests_lock, while
nbd_reconnecting_attempt() can inline the access now that no
complicated atomics are involved.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414175756.671165-8-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:16:39 -05:00
Paolo Bonzini 8d45185cb7 nbd: code motion and function renaming
Prepare for the next patch, so that the diff is less confusing.

nbd_client_connecting is moved closer to the definition point.

nbd_client_connecting_wait() is kept only for the reconnection
logic; when it is used to check if a request has to be reissued,
use the renamed function nbd_client_will_reconnect().  In the
next patch, the two cases will have different locking requirements.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414175756.671165-7-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:16:38 -05:00
Paolo Bonzini ee19d953ec nbd: use a QemuMutex to synchronize yanking, reconnection and coroutines
The condition for waiting on the s->free_sema queue depends on
both s->in_flight and s->state.  The latter is currently using
atomics, but this is quite dubious and probably wrong.

Because s->state is written in the main thread too, for example by
the yank callback, it cannot be protected by a CoMutex.  Introduce a
separate lock that can be used by nbd_co_send_request(); later on this
lock will also be used for s->state.  There will not be any contention
on the lock unless there is a yank or reconnect, so this is not
performance sensitive.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414175756.671165-6-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:16:37 -05:00
Paolo Bonzini 8610b4491f nbd: keep send_mutex/free_sema handling outside nbd_co_do_establish_connection
Elevate s->in_flight early so that other incoming requests will wait
on the CoQueue in nbd_co_send_request; restart them after getting back
from nbd_reconnect_attempt.  This could be after the reconnect timer or
nbd_cancel_in_flight have cancelled the attempt, so there is no
need anymore to cancel the requests there.

nbd_co_send_request now handles both stopping and restarting pending
requests after a successful connection, and there is no need to
hold send_mutex in nbd_co_do_establish_connection.  The current setup
is confusing because nbd_co_do_establish_connection is called both with
send_mutex taken and without it.  Before the patch it uses free_sema which
(at least in theory...) is protected by send_mutex, after the patch it
does not anymore.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414175756.671165-5-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: wrap long line]
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:16:36 -05:00
Paolo Bonzini 172f5f1a40 nbd: remove peppering of nbd_client_connected
It is unnecessary to check nbd_client_connected() because every time
s->state is moved out of NBD_CLIENT_CONNECTED the socket is shut down
and all coroutines are resumed.

The only case where it was actually needed is when the NBD
server disconnects and there is no reconnect-delay.  In that
case, nbd_receive_replies() does not set s->reply.handle and
nbd_co_do_receive_one_chunk() cannot continue.  For that one case,
check the return value of nbd_receive_replies().

As to the others:

* nbd_receive_replies() can put the current coroutine to sleep if another
reply is ongoing; then it will be woken by nbd_channel_error(), called
by the ongoing reply.  Or it can try itself to read a reply header and
fail, thus calling nbd_channel_error() itself.

* nbd_co_send_request() will write the body of the request and fail

* nbd_reply_chunk_iter_receive() will call nbd_co_receive_one_chunk()
and then nbd_co_do_receive_one_chunk(), which will handle the failure as
above; or it will just detect a previous call to nbd_iter_channel_error()
via iter->ret < 0.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414175756.671165-4-pbonzini@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:16:36 -05:00
Paolo Bonzini 0c43c6fc89 nbd: mark more coroutine_fns
Several coroutine functions in block/nbd.c are not marked as such.  This
patch adds a few more markers; it is not exhaustive, but it focuses
especially on:

- places that wake other coroutines, because aio_co_wake() has very
different semantics inside a coroutine (queuing after yield vs. entering
immediately);

- functions with _co_ in their names, to avoid confusion

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414175756.671165-3-pbonzini@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:16:35 -05:00
Paolo Bonzini 8846b7d1c1 nbd: safeguard against waking up invalid coroutine
The .reply_possible field of s->requests is never set to false.  This is
not a problem as it is only a safeguard to detect protocol errors,
but it's sloppy.  In fact, the field is actually not necessary at all,
because .coroutine is set to NULL in NBD_FOREACH_REPLY_CHUNK after
receiving the last chunk.  Thus, replace .reply_possible with .coroutine
and move the check before deciding the fate of this request.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414175756.671165-2-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:16:24 -05:00
Vladimir Sementsov-Ogievskiy c08c220be7 iotests/223: check new possibility of exporting bitmaps by node/name
Add simple test that new interface introduced in previous commit works.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Message-Id: <20220314213226.362217-4-v.sementsov-og@mail.ru>
[eblake: Adjust S-o-b to Vladimir's new email, with permission]
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:15:56 -05:00
Vladimir Sementsov-Ogievskiy e5fb29d5d0 qapi: nbd-export: allow select bitmaps by node/name pair
Hi all! Current logic of relying on search through backing chain is not
safe neither convenient.

Sometimes it leads to necessity of extra bitmap copying. Also, we are
going to add "snapshot-access" driver, to access some snapshot state
through NBD. And this driver is not formally a filter, and of course
it's not a COW format driver. So, searching through backing chain will
not work. Instead of widening the workaround of bitmap searching, let's
extend the interface so that user can select bitmap precisely.

Note, that checking for bitmap active status is not copied to the new
API, I don't see a reason for it, user should understand the risks. And
anyway, bitmap from other node is unrelated to this export being
read-only or read-write.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Message-Id: <20220314213226.362217-3-v.sementsov-og@mail.ru>
[eblake: Adjust S-o-b to Vladimir's new email, with permission]
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:15:19 -05:00
Vladimir Sementsov-Ogievskiy 1466ef6cbe qapi: rename BlockDirtyBitmapMergeSource to BlockDirtyBitmapOrStr
Rename the type to be reused. Old name is "what is it for". To be
natively reused for other needs, let's name it exactly "what is it".

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Message-Id: <20220314213226.362217-2-v.sementsov-og@mail.ru>
[eblake: Adjust S-o-b to Vladimir's new email, with permission]
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2022-04-26 13:13:50 -05:00
Richard Henderson eab18e4021 Misc patch queue
* Removes depecated --enable-fips QEMU system emulator option
 * Fixes array bounds check in keycode conversion for ESCC device
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Merge tag 'misc-next-pull-request' of https://gitlab.com/berrange/qemu into staging

Misc patch queue

* Removes depecated --enable-fips QEMU system emulator option
* Fixes array bounds check in keycode conversion for ESCC device

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# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 26 Apr 2022 08:13:14 AM PDT
# gpg:                using RSA key DAF3A6FDB26B62912D0E8E3FBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>" [full]
# gpg:                 aka "Daniel P. Berrange <berrange@redhat.com>" [full]

* tag 'misc-next-pull-request' of https://gitlab.com/berrange/qemu:
  github: fix config mistake preventing repo lockdown commenting
  hw/char: fix qcode array bounds check in ESCC impl
  softmmu: remove deprecated --enable-fips option

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-04-26 10:36:35 -07:00
Richard Henderson 7f176c5a0b tests/tcg/nios2: Add test-shadow-1
Add a regression test for tcg indirect global lowering.

This appeared with nios2, with cps != 0, so that we use
indirection into the shadow register set.  An indirect
call verifies alignment of rA.  The use of rA was live
across the brcond leading to a tcg_debug_assert failure.

Cc: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220421151735.31996-65-richard.henderson@linaro.org>
2022-04-26 08:17:10 -07:00