Commit Graph

94458 Commits

Author SHA1 Message Date
Philippe Mathieu-Daudé 004900acbc tests/fp/berkeley-testfloat-3: Ignore ignored #pragma directives
Since we already use -Wno-unknown-pragmas, we can also use
-Wno-ignored-pragmas. This silences hundred of warnings using
clang 13 on macOS Monterey:

  [409/771] Compiling C object tests/fp/libtestfloat.a.p/berkeley-testfloat-3_source_test_az_f128_rx.c.o
  ../tests/fp/berkeley-testfloat-3/source/test_az_f128_rx.c:49:14: warning: '#pragma FENV_ACCESS' is not supported on this target - ignored [-Wignored-pragmas]
  #pragma STDC FENV_ACCESS ON
               ^
  1 warning generated.

Having:

  $ cc -v
  Apple clang version 13.0.0 (clang-1300.0.29.30)

Reported-by: Roman Bolshakov <roman@roolebo.dev>
Reviewed-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Tested-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-03-15 13:36:33 +01:00
Philippe Mathieu-Daudé e910c7d9bf configure: Allow passing extra Objective C compiler flags
We can pass C/CPP/LD flags via CFLAGS/CXXFLAGS/LDFLAGS environment
variables, or via configure --extra-cflags / --extra-cxxflags /
--extra-ldflags options. Provide similar behavior for Objective C:
use existing flags from $OBJCFLAGS, or passed via --extra-objcflags.

Reviewed-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Tested-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-03-15 13:36:33 +01:00
Peter Maydell a72ada1662 -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
 
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Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging

# gpg: Signature made Tue 15 Mar 2022 05:58:55 GMT
# 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

* tag 'net-pull-request' of https://github.com/jasowang/qemu:
  vdpa: Expose VHOST_F_LOG_ALL on SVQ
  vdpa: Never set log_base addr if SVQ is enabled
  vdpa: Adapt vhost_vdpa_get_vring_base to SVQ
  vdpa: Add custom IOTLB translations to SVQ
  vhost: Add VhostIOVATree
  util: add iova_tree_find_iova
  util: Add iova_tree_alloc_map
  vhost: Shadow virtqueue buffers forwarding
  vdpa: adapt vhost_ops callbacks to svq
  virtio: Add vhost_svq_get_vring_addr
  vhost: Add vhost_svq_valid_features to shadow vq
  vhost: Add Shadow VirtQueue call forwarding capabilities
  vhost: Add Shadow VirtQueue kick forwarding capabilities
  vhost: Add VhostShadowVirtqueue
  virtio-net: fix map leaking on error during receive

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-15 09:53:13 +00:00
Eugenio Pérez 12a195fa34 vdpa: Expose VHOST_F_LOG_ALL on SVQ
SVQ is able to log the dirty bits by itself, so let's use it to not
block migration.

Also, ignore set and clear of VHOST_F_LOG_ALL on set_features if SVQ is
enabled. Even if the device supports it, the reports would be nonsense
because SVQ memory is in the qemu region.

The log region is still allocated. Future changes might skip that, but
this series is already long enough.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez 773ebc952e vdpa: Never set log_base addr if SVQ is enabled
Setting the log address would make the device start reporting invalid
dirty memory because the SVQ vrings are located in qemu's memory.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez 6d0b222666 vdpa: Adapt vhost_vdpa_get_vring_base to SVQ
This is needed to achieve migration, so the destination can restore its
index.

Setting base as last used idx, so destination will see as available all
the entries that the device did not use, including the in-flight
processing ones.

This is ok for networking, but other kinds of devices might have
problems with these retransmissions.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez 34e3c94eda vdpa: Add custom IOTLB translations to SVQ
Use translations added in VhostIOVATree in SVQ.

Only introduce usage here, not allocation and deallocation. As with
previous patches, we use the dead code paths of shadow_vqs_enabled to
avoid commiting too many changes at once. These are impossible to take
at the moment.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez ec6122d882 vhost: Add VhostIOVATree
This tree is able to look for a translated address from an IOVA address.

At first glance it is similar to util/iova-tree. However, SVQ working on
devices with limited IOVA space need more capabilities, like allocating
IOVA chunks or performing reverse translations (qemu addresses to iova).

The allocation capability, as "assign a free IOVA address to this chunk
of memory in qemu's address space" allows shadow virtqueue to create a
new address space that is not restricted by guest's addressable one, so
we can allocate shadow vqs vrings outside of it.

It duplicates the tree so it can search efficiently in both directions,
and it will signal overlap if iova or the translated address is present
in any tree.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez 193d17be0b util: add iova_tree_find_iova
This function does the reverse operation of iova_tree_find: To look for
a mapping that match a translated address so we can do the reverse.

This have linear complexity instead of logarithmic, but it supports
overlapping HVA. Future developments could reduce it.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez 9376bde894 util: Add iova_tree_alloc_map
This iova tree function allows it to look for a hole in allocated
regions and return a totally new translation for a given translated
address.

It's usage is mainly to allow devices to access qemu address space,
remapping guest's one into a new iova space where qemu can add chunks of
addresses.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez 100890f7ca vhost: Shadow virtqueue buffers forwarding
Initial version of shadow virtqueue that actually forward buffers. There
is no iommu support at the moment, and that will be addressed in future
patches of this series. Since all vhost-vdpa devices use forced IOMMU,
this means that SVQ is not usable at this point of the series on any
device.

For simplicity it only supports modern devices, that expects vring
in little endian, with split ring and no event idx or indirect
descriptors. Support for them will not be added in this series.

It reuses the VirtQueue code for the device part. The driver part is
based on Linux's virtio_ring driver, but with stripped functionality
and optimizations so it's easier to review.

However, forwarding buffers have some particular pieces: One of the most
unexpected ones is that a guest's buffer can expand through more than
one descriptor in SVQ. While this is handled gracefully by qemu's
emulated virtio devices, it may cause unexpected SVQ queue full. This
patch also solves it by checking for this condition at both guest's
kicks and device's calls. The code may be more elegant in the future if
SVQ code runs in its own iocontext.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez d96be4c894 vdpa: adapt vhost_ops callbacks to svq
First half of the buffers forwarding part, preparing vhost-vdpa
callbacks to SVQ to offer it. QEMU cannot enable it at this moment, so
this is effectively dead code at the moment, but it helps to reduce
patch size.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez dafb34c992 virtio: Add vhost_svq_get_vring_addr
It reports the shadow virtqueue address from qemu virtual address space.

Since this will be different from the guest's vaddr, but the device can
access it, SVQ takes special care about its alignment & lack of garbage
data. It assumes that IOMMU will work in host_page_size ranges for that.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez 4725a4181b vhost: Add vhost_svq_valid_features to shadow vq
This allows SVQ to negotiate features with the guest and the device. For
the device, SVQ is a driver. While this function bypasses all
non-transport features, it needs to disable the features that SVQ does
not support when forwarding buffers. This includes packed vq layout,
indirect descriptors or event idx.

Future changes can add support to offer more features to the guest,
since the use of VirtQueue gives this for free. This is left out at the
moment for simplicity.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez a8ac88585d vhost: Add Shadow VirtQueue call forwarding capabilities
This will make qemu aware of the device used buffers, allowing it to
write the guest memory with its contents if needed.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez dff4426fa6 vhost: Add Shadow VirtQueue kick forwarding capabilities
At this mode no buffer forwarding will be performed in SVQ mode: Qemu
will just forward the guest's kicks to the device.

Host memory notifiers regions are left out for simplicity, and they will
not be addressed in this series.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Eugenio Pérez 10857ec0ad vhost: Add VhostShadowVirtqueue
Vhost shadow virtqueue (SVQ) is an intermediate jump for virtqueue
notifications and buffers, allowing qemu to track them. While qemu is
forwarding the buffers and virtqueue changes, it is able to commit the
memory it's being dirtied, the same way regular qemu's VirtIO devices
do.

This commit only exposes basic SVQ allocation and free. Next patches of
the series add functionality like notifications and buffers forwarding.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Jason Wang abe300d9d8 virtio-net: fix map leaking on error during receive
Commit bedd7e93d0 ("virtio-net: fix use after unmap/free for sg")
tries to fix the use after free of the sg by caching the virtqueue
elements in an array and unmap them at once after receiving the
packets, But it forgot to unmap the cached elements on error which
will lead to leaking of mapping and other unexpected results.

Fixing this by detaching the cached elements on error. This addresses
CVE-2022-26353.

Reported-by: Victor Tom <vv474172261@gmail.com>
Cc: qemu-stable@nongnu.org
Fixes: CVE-2022-26353
Fixes: bedd7e93d0 ("virtio-net: fix use after unmap/free for sg")
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-03-15 13:57:44 +08:00
Peter Maydell 6f4fe14b46 Fixes for s390x host vectors
Fix for arm ldrd unpredictable case
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Merge tag 'pull-tcg-20220314' of https://gitlab.com/rth7680/qemu into staging

Fixes for s390x host vectors
Fix for arm ldrd unpredictable case

# gpg: Signature made Mon 14 Mar 2022 17:32:44 GMT
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* tag 'pull-tcg-20220314' of https://gitlab.com/rth7680/qemu:
  tcg/arm: Don't emit UNPREDICTABLE LDRD with Rm == Rt or Rt+1
  tcg/s390x: Fix tcg_out_dup_vec vs general registers
  tcg/s390x: Fix INDEX_op_bitsel_vec vs VSEL
  tcg/s390x: Fix tcg_out_dupi_vec vs VGM

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-14 18:11:36 +00:00
Richard Henderson 76cff100be tcg/arm: Don't emit UNPREDICTABLE LDRD with Rm == Rt or Rt+1
The LDRD (register) instruction is UNPREDICTABLE if the Rm register
is the same as either Rt or Rt+1 (the two registers being loaded to).
We weren't making sure we avoided this, with the result that on some
host CPUs like the Cortex-A7 we would get a SIGILL because the CPU
chooses to UNDEF for this particular UNPREDICTABLE case.

Since we've already checked that datalo is aligned, we can simplify
the test vs the Rm operand by aligning it before comparison.  Check
for the two orderings before falling back to two ldr instructions.

We don't bother to do anything similar for tcg_out_ldrd_rwb(),
because it is only used in tcg_out_tlb_read() with a fixed set of
registers which don't overlap.

There is no equivalent UNPREDICTABLE case for STRD.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/896
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-14 10:31:51 -07:00
Richard Henderson 6e591a8569 tcg/s390x: Fix tcg_out_dup_vec vs general registers
We copied the data from the general register input to the
vector register output, but have not yet replicated it.
We intended to fall through into the vector-vector case,
but failed to redirect the input register.

This is caught by an assertion failure in tcg_out_insn_VRIc,
which diagnosed the incorrect register class.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-14 10:31:51 -07:00
Richard Henderson 6e5f9fb799 tcg/s390x: Fix INDEX_op_bitsel_vec vs VSEL
The operands are output in the wrong order: the tcg selector
argument is first, whereas the s390x selector argument is last.

Tested-by: Thomas Huth <thuth@redhat.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/898
Fixes: 9bca986df8 ("tcg/s390x: Implement TCG_TARGET_HAS_bitsel_vec")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-14 10:31:51 -07:00
Richard Henderson a66669c942 tcg/s390x: Fix tcg_out_dupi_vec vs VGM
The immediate operands to VGM were in the wrong order,
producing an inverse mask.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-14 10:31:51 -07:00
Peter Maydell 352998df1c I2C patch queue
- Fix AT24 EEPROM partial write (Patrick Venture)
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Merge tag 'i2c-20220314' of https://github.com/philmd/qemu into staging

I2C patch queue

- Fix AT24 EEPROM partial write (Patrick Venture)

# gpg: Signature made Mon 14 Mar 2022 13:50:01 GMT
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [unknown]
# 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: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* tag 'i2c-20220314' of https://github.com/philmd/qemu:
  hw/nvram: at24 return 0xff if 1 byte address

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-14 14:39:33 +00:00
Patrick Venture 1cbab82e9d hw/nvram: at24 return 0xff if 1 byte address
The at24 eeproms are 2 byte devices that return 0xff when they are read
from with a partial (1-byte) address written.  This distinction was
found comparing model behavior to real hardware testing.

Tested: `i2ctransfer -f -y 45 w1@85 0 r1` returns 0xff instead of next
byte

Signed-off-by: Patrick Venture <venture@google.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211220212137.1244511-1-venture@google.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-03-14 14:48:35 +01:00
Peter Maydell 15df33ceb7 Hexagon bug fixes and additional tests
Also includes a patch from Zongyuan Li <zongyuan.li@smartx.com> to remove an unused variable
 
 ******** Changes in v2 ********
 Fix problems with build-user-hexagon CI job
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Merge remote-tracking branch 'remotes/quic/tags/pull-hex-20220312-1' into staging

Hexagon bug fixes and additional tests

Also includes a patch from Zongyuan Li <zongyuan.li@smartx.com> to remove an unused variable

******** Changes in v2 ********
Fix problems with build-user-hexagon CI job

# gpg: Signature made Sat 12 Mar 2022 20:09:29 GMT
# gpg:                using RSA key 3635C788CE62B91FD4C59AB47B0244FB12DE4422
# gpg: Good signature from "Taylor Simpson (Rock on) <tsimpson@quicinc.com>" [unknown]
# 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: 3635 C788 CE62 B91F D4C5  9AB4 7B02 44FB 12DE 4422

* remotes/quic/tags/pull-hex-20220312-1:
  target/hexagon: remove unused variable
  Hexagon (target/hexagon) assignment to c4 should wait until packet commit
  Hexagon (target/hexagon) fix bug in conv_df2uw_chop
  Hexagon (tests/tcg/hexagon) fix inline asm in preg_alias.c
  Hexagon (tests/tcg/hexagon) update overflow test
  Hexagon (tests/tcg/hexagon) add floating point instructions to usr.c
  Hexagon (tests/tcg/hexagon) test instructions that might set bits in USR
  Hexagon (target/hexagon) properly handle NaN in dfmin/dfmax/sfmin/sfmax
  Hexagon (target/hexagon) properly handle denorm in arch_sf_recip_common
  Hexagon (target/hexagon) properly set FPINVF bit in sfcmp.uo and dfcmp.uo
  Hexagon HVX (target/hexagon) fix bug in HVX saturate instructions
  Hexagon (target/hexagon) fix bug in circular addressing

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-13 17:29:18 +00:00
Zongyuan Li 4a818b3767 target/hexagon: remove unused variable
When building with clang version 13.0.0 (eg. Fedora 13.0.0-3.fc35),
two unused variables introduced by macro GATHER_FUNCTION and
SCATTER_FUNCTION will cause building process failure due to
[-Werror -Wunused-variable].

Signed-off-by: Zongyuan Li <zongyuan.li@smartx.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/831
Message-Id: <20220124064339.56027-1-zongyuan.li@smartx.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
2022-03-12 09:14:22 -08:00
Taylor Simpson c0d86060f0 Hexagon (target/hexagon) assignment to c4 should wait until packet commit
On Hexagon, c4 is an alias for predicate registers P3:0.  If we assign to
c4 inside a packet with reads from predicate registers, the predicate
reads should get the old values.

Test case added to tests/tcg/hexagon/preg_alias.c

Co-authored-by: Michael Lambert <mlambert@cuicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-13-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Taylor Simpson 3977ba3078 Hexagon (target/hexagon) fix bug in conv_df2uw_chop
Fix typo that checked for 32 bit nan instead of 64 bit

Test case added in tests/tcg/hexagon/usr.c

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-11-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Taylor Simpson 8af2d9978a Hexagon (tests/tcg/hexagon) fix inline asm in preg_alias.c
Replace consecutive inline asm blocks with a single one with proper
outputs/inputs/clobbers rather than making assumptions about register
values being carried between separate blocks.

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-10-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Taylor Simpson 8576e7ecae Hexagon (tests/tcg/hexagon) update overflow test
Add a test that sets USR multiple times in a packet

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-9-tsimpson@quicinc.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Taylor Simpson 2479540fff Hexagon (tests/tcg/hexagon) add floating point instructions to usr.c
Tests to confirm floating point instructions are properly
setting exception bits in USR

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-8-tsimpson@quicinc.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Taylor Simpson 4d04395a17 Hexagon (tests/tcg/hexagon) test instructions that might set bits in USR
Hexagon has ~200 instructions that set the saturate bit in USR, these
were broken into groups of similar instructions and one instruction
from each group is tested with at least one input that does not
saturate and at least one input that does saturate.

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-7-tsimpson@quicinc.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Taylor Simpson d76dd816bf Hexagon (target/hexagon) properly handle NaN in dfmin/dfmax/sfmin/sfmax
The float??_minnum implementation differs from Hexagon for SNaN,
it returns NaN, but Hexagon returns the other input.  So, we use
float??_minimum_number.

Test cases added to tests/tcg/hexagon/fpstuff.c

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220308190410.22355-1-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Taylor Simpson 77ccf44453 Hexagon (target/hexagon) properly handle denorm in arch_sf_recip_common
The arch_sf_recip_common function was calling float32_getexp which
adjusts for denorm, but the we actually need the raw exponent bits.

This function is called from 3 instructions
    sfrecipa
    sffixupn
    sffixupd

Test cases added to tests/tcg/hexagon/fpstuff.c

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-6-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Taylor Simpson 9a65990326 Hexagon (target/hexagon) properly set FPINVF bit in sfcmp.uo and dfcmp.uo
Instead of checking for nan arguments, use float??_unordered_quiet

test cases added in a subsequent patch to more extensively test USR bits

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-4-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Taylor Simpson 5b0043c67c Hexagon HVX (target/hexagon) fix bug in HVX saturate instructions
Two tests added to tests/tcg/hexagon/hvx_misc.c
    v21.uw = vadd(v11.uw, v10.uw):sat
    v25:24.uw = vsub(v17:16.uw, v27:26.uw):sat

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-3-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Michael Lambert 58ff298166 Hexagon (target/hexagon) fix bug in circular addressing
Versions V3 and earlier should treat the "K_const" and "length" values
as unsigned.

Modified circ_test_v3() in tests/tcg/hexagon/circ.c to reproduce the bug

Signed-off-by: Michael Lambert <mlambert@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-2-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-12 09:14:22 -08:00
Peter Maydell 1416688c53 q800-updates-for-7.0 queue
-----BEGIN PGP SIGNATURE-----
 
 iQFSBAABCgA8FiEEzGIauY6CIA2RXMnEW8LFb64PMh8FAmIoiAMeHG1hcmsuY2F2
 ZS1heWxhbmRAaWxhbmRlLmNvLnVrAAoJEFvCxW+uDzIfcn0H+wfeA9uKZ9DNc20O
 XDkq2lnUiEyrKsZrVn8jRlw/zHnuElX2WmMGckisJpcaBpZSwlypHBhrjssUXu7v
 nHlrOYqoKxiYFSZVPj1n+P849BW3LKNgcA5/njA87QUjMOCW6eq4Sp9beDsSbw57
 cPAXUhGNI4uvLh6ew9aoxz01KhBSY1hFMmX0U6gcDx48f5cr/NU81+Vae0+Ks3B+
 BPbYjED3yr7G6nu63MT63WXlAnKBQpndkjbVYubQCwVJqLRBb6p37Gm81KXozpos
 QxF9miWdzA2dRCrSutcAd84rTWq2w8T2Wf2sW3B8lXNy+s+qTSnvsiOUjoaESzv7
 UKXmYZE=
 =RwkZ
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/mcayland/tags/q800-updates-for-7.0-20220309' into staging

q800-updates-for-7.0 queue

# gpg: Signature made Wed 09 Mar 2022 10:57:07 GMT
# gpg:                using RSA key CC621AB98E82200D915CC9C45BC2C56FAE0F321F
# gpg:                issuer "mark.cave-ayland@ilande.co.uk"
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>" [full]
# Primary key fingerprint: CC62 1AB9 8E82 200D 915C  C9C4 5BC2 C56F AE0F 321F

* remotes/mcayland/tags/q800-updates-for-7.0-20220309: (22 commits)
  esp: recreate ESPState current_req after migration
  esp: include the current PDMA callback in the migration stream
  esp: convert ESPState pdma_cb from a function pointer to an integer
  esp: introduce esp_pdma_cb() function
  esp: introduce esp_set_pdma_cb() function
  macfb: set initial value of mode control registers in macfb_common_realize()
  macfb: add VMStateDescription fields for display type and VBL timer
  macfb: increase number of registers saved in MacfbState
  macfb: don't use special irq_state and irq_mask variables in MacfbState
  macfb: add VMStateDescription for MacfbNubusState and MacfbSysBusState
  macio/pmu.c: remove redundant code
  mos6522: implement edge-triggering for CA1/2 and CB1/2 control line IRQs
  mac_via: make SCSI_DATA (DRQ) bit live rather than latched
  mos6522: record last_irq_levels in mos6522_set_irq()
  mos6522: add "info via" HMP command for debugging
  mos6522: add register names to register read/write trace events
  mos6522: use device_class_set_parent_reset() to propagate reset to parent
  mos6522: remove update_irq() and set_sr_int() methods from MOS6522DeviceClass
  mos6522: switch over to use qdev gpios for IRQs
  mac_via: use IFR bit flag constants for VIA2 IRQs
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-10 13:16:37 +00:00
Peter Maydell 2048c4eba2 I²C / SMBus / PMBus patches
- Add some Renesas models
 - Add Titus Rwantare to MAINTAINERS
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE+qvnXhKRciHc/Wuy4+MsLN6twN4FAmInnGIACgkQ4+MsLN6t
 wN4/+xAAnizlInSPGTA6RAKZS6rVjY3N0/tYsdZWWRTxfVZcN3NceQGwDzFJlVhm
 Hsyv9ZgHNpFXcWAyIH2+YwVm95XsCklHQN10HEeQvNqI/cMrAj8lHudP2PMHbxhG
 TecGjuMiQFNK+FMxWvsUovj069LJHFBznCT7NqMjBmh2XsIOB9gCwA4FzU3ehOG+
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 v8ACM+swPUqu4HImwhAfnIGN05GWXXMWPnttOxK15H6vA4Rhz2k2zy+APJBzX324
 BrMPeDITBj2jlPVwCwWZb81J+ImYovP+CqiCGunkVA7GjbPTbTGps235Ng1Brgua
 cJ+VZ9OtkvB3YkDLHxivxvJjuRwWySEA3AQnvGskJ6V7SMIEUnqiAbAimWuBLi6I
 JV/Nd7QP+/PcuVoDYpdrDAtxO4R3MZW8G2l1Kl79eQ5TLIzAO6KcaxhJacYbdNtk
 U6Qj9+pupvMh+SCzwXcbVE9N4h+n4vzdqij3MSxtfhFW0fCbdnR9OGKdYQKFvNe3
 tOqPyoYrtGvy+/PlZL+/BFmTiOP9RrFvk1zrWlS6ZqiqKMJhdvQ=
 =scS/
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/philmd/tags/pmbus-20220308' into staging

I²C / SMBus / PMBus patches

- Add some Renesas models
- Add Titus Rwantare to MAINTAINERS

# gpg: Signature made Tue 08 Mar 2022 18:11:46 GMT
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [unknown]
# 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: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* remotes/philmd/tags/pmbus-20220308:
  hw/sensor: add Renesas raa228000 device
  hw/sensor: add Renesas raa229004 PMBus device
  hw/sensor: add Intersil ISL69260 device model
  hw/i2c: Added linear mode translation for pmbus devices
  hw/i2c: pmbus: update MAINTAINERS
  hw/i2c: pmbus: refactor uint handling
  hw/i2c: pmbus: add PEC unsupported warning
  hw/i2c: pmbus: fix error returns and guard against out of range accesses
  hw/i2c: pmbus: add registers

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-09 21:16:27 +00:00
Peter Maydell d9ccf33f94 linux-user pull request 20220308
deliver SIGTRAP on POWERPC_EXCP_TRAP
 remove stale "not threadsafe" comments
 -----BEGIN PGP SIGNATURE-----
 
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 dml2aWVyLmV1AAoJEPMMOL0/L748H1kQAJ+FT6y4bcUORBNBqVUURR7ENA1fDg+F
 bE/YW6TlREWIOw4N1iiS4kmIiGyowPY6zWvUM4jib7g1v1dNF9TbTJz7bpPapk0v
 emz+IMG/jgCNziXhoY3rtVDGyfOuH4zsbjTKqARS1411Qy15B2EIrGbRL3BaROL0
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 utqzqP2OJKeJJRM7tHFtWw3+JDrfGI2xp421rKuwf0yndwgqxnaLD/McP/J0L5DJ
 Y4e04kJmRb9Iy849zMTQXascTwy/ZwK4/wezArgl4FNxsOh1W35YUd3NVf4wzaIG
 0DTPR2d6THUaoZ5Hs67uKMMmAk4u/yEdEs5MmIhyFOIN3Hsa+AygPmnSrMu1yuCw
 gaCjjwSkK92mqrXH7zSrxJrEWm0/5SX8NROROa6T8cXf3uuQYLftp66AJrExXWyE
 B1MOEMvZV6Qm0vHC5NiJtVcitIhWiVv00F3mn20dy47xCT3ndm34j86LO4ymsyVT
 JTYIY0ulbQY+
 =wSx/
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/lvivier-gitlab/tags/linux-user-for-7.0-pull-request' into staging

linux-user pull request 20220308

deliver SIGTRAP on POWERPC_EXCP_TRAP
remove stale "not threadsafe" comments

# gpg: Signature made Tue 08 Mar 2022 15:02:14 GMT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/lvivier-gitlab/tags/linux-user-for-7.0-pull-request:
  tests/tcg/ppc64le: change signal_save_restore_xer to use SIGTRAP
  linux-user/ppc: deliver SIGTRAP on POWERPC_EXCP_TRAP
  linux-user: Remove stale "not threadsafe" comments

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-09 20:01:17 +00:00
Peter Maydell 8098417d11 aspeed queue:
* Fix for a potential memory leak
 * Aspeed SMC cleanups on the definition of the number of flash devices
 * New bletchley-bmc machine, AST2600 based
 -----BEGIN PGP SIGNATURE-----
 
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 8jeDrLRE/qFlhgMA/Vki1+aEix/bleoAMQq1aNMwPyJd2/72XayX5wgsh/gXNS0j
 URQYGE58n2ObEtQKvENr/HXGzTFORXeVyklgWs0DMXCokV2R6fy7uK3dbff8gmWa
 OVPAhUGsug4mzXh7Cw0nNuok1IkTyUq6f37UhM05UMYvdW7euIsnX77r/dFuPaYc
 wDbmaX2FmWzu08oVOpXasCWojqmMiNvhn53OLcOr1/XDON8Dj9WQlVKaVHpIjbJF
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 fiNE7tFtZNxMNT58MZ3Qm1OjCzskCGtLR8HT///xDqqne+ikav4FE8f0M9BFOb+M
 ViONfJybig1n6dHRRN9Bfb3Ob6+LdipkzsW2mSq3kARpsex+uKbXFEgifdzLasHv
 wZsYu7oNZksJ31EAAY/ClfkiNc+jkk9baJru+FZRum4YO97d2pQAtfEruHs39UHs
 H9aa6qTXR3UJwzIrnHvVCobrLSMtT4I3CbVWDznM5tdCrSN1v/E6XgoWW/fJ8qHl
 YHkPsGHuO/mlUPSI06d/26dUNrsxibks3V0kMIC3BazLmklVQLI=
 =5VHm
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/legoater/tags/pull-aspeed-20220308' into staging

aspeed queue:

* Fix for a potential memory leak
* Aspeed SMC cleanups on the definition of the number of flash devices
* New bletchley-bmc machine, AST2600 based

# gpg: Signature made Tue 08 Mar 2022 08:19:25 GMT
# gpg:                using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@kaod.org>" [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: A0F6 6548 F048 95EB FE6B  0B60 51A3 43C7 CFFB ECA1

* remotes/legoater/tags/pull-aspeed-20220308:
  hw: aspeed_gpio: Cleanup stray semicolon after switch
  hw/arm/aspeed: add Bletchley machine type
  hw/arm/aspeed: allow missing spi_model
  hw/block: m25p80: Add support for w25q01jvq
  aspeed/smc: Fix error log
  aspeed/smc: Let the SSI core layer define the bus name
  aspeed/smc: Rename 'max_peripherals' to 'cs_num_max'
  aspeed/smc: Remove 'num_cs' field
  aspeed: Rework aspeed_board_init_flashes() interface
  aspeed/smc: Use max number of CE instead of 'num_cs'
  aspeed: Fix a potential memory leak bug in write_boot_rom()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-09 18:06:40 +00:00
Peter Maydell 4b7520911b qemu-openbios queue
-----BEGIN PGP SIGNATURE-----
 
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 ZS1heWxhbmRAaWxhbmRlLmNvLnVrAAoJEFvCxW+uDzIfYWEH/0gcE2o5bOsED7ui
 Mg1vnt0xdTXpdDcgLWAb912ashiO/KZwTUcg7r3UsuH1dQxRRfjaJlcJSLk65HsL
 sPejdZv9saom4m/55XzSL/E2kR+EbJRdVKis/ilyidAZ9jHTVrZaGE1UKBLzJdbu
 bEbrn2JguYXh+Hu9FdinmmsKszmga4lWuGhh80zZTe3WZokvLN4YlC4Q45xhedII
 PF65nXcaYAW/+HEDduB3Uf6sNr9C5fcAwpaGgJ9+vkS0PYvmGi5QrwV36XwSHVyF
 5y9ZbaoToKx0Hym1tmdl5xUh9gWx3d2XUzS/tqxnP/mq5fPwG7BjNtJ6F/DmzAn4
 gMhFEsY=
 =U1E2
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/mcayland/tags/qemu-openbios-20220308' into staging

qemu-openbios queue

# gpg: Signature made Tue 08 Mar 2022 08:05:09 GMT
# gpg:                using RSA key CC621AB98E82200D915CC9C45BC2C56FAE0F321F
# gpg:                issuer "mark.cave-ayland@ilande.co.uk"
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>" [full]
# Primary key fingerprint: CC62 1AB9 8E82 200D 915C  C9C4 5BC2 C56F AE0F 321F

* remotes/mcayland/tags/qemu-openbios-20220308:
  roms/openbios: update OpenBIOS images to 0e0afae6 built from submodule

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-09 15:50:39 +00:00
Peter Maydell fdee2c9692 nbd patches for 2022-03-07
- Dan Berrange: Allow qemu-nbd to support TLS over Unix sockets
 - Eric Blake: Minor cleanups related to 64-bit block operations
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEEccLMIrHEYCkn0vOqp6FrSiUnQ2oFAmImtE8ACgkQp6FrSiUn
 Q2ovmgf/aksDqf2eNcahs++fez+8Qi9ll5OY/qGyjnzBgsatYKjrK+xF7OnjoJox
 eRX026lh81Q4EQK7oZBUnr2UCY4bncDBTI7MTLh603EV/tId5ZLwx007ERhzvtC1
 mIsQHXNuO9X25LQG2eWnfunY9YztQpiT5r/g3khD2yPBqJWIvBfblzPLx6FkF7px
 /WM8xEKCihmGr1Wr3b+zGYL083YkaBWCvHoR8mJt3tEFUj+Qie8XcdV0OVyI0XUj
 5goIFRcpVwBE8P2nLtfUKNzEXz22cmdonOJUX7E5IvGO21k5F/HrWlHdo8JnuSUZ
 t0w5L9yCxBrRpY1burz30b77J0WMCw==
 =C8Dd
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2022-03-07' into staging

nbd patches for 2022-03-07

- Dan Berrange: Allow qemu-nbd to support TLS over Unix sockets
- Eric Blake: Minor cleanups related to 64-bit block operations

# gpg: Signature made Tue 08 Mar 2022 01:41:35 GMT
# gpg:                using RSA key 71C2CC22B1C4602927D2F3AAA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg:                 aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-nbd-2022-03-07:
  qemu-io: Allow larger write zeroes under no fallback
  qemu-io: Utilize 64-bit status during map
  nbd/server: Minor cleanups
  tests/qemu-iotests: validate NBD TLS with UNIX sockets and PSK
  tests/qemu-iotests: validate NBD TLS with UNIX sockets
  tests/qemu-iotests: validate NBD TLS with hostname mismatch
  tests/qemu-iotests: convert NBD TLS test to use standard filters
  tests/qemu-iotests: introduce filter for qemu-nbd export list
  tests/qemu-iotests: expand _filter_nbd rules
  tests/qemu-iotests: add QEMU_IOTESTS_REGEN=1 to update reference file
  block/nbd: don't restrict TLS usage to IP sockets
  qemu-nbd: add --tls-hostname option for TLS certificate validation
  block/nbd: support override of hostname for TLS certificate validation
  block: pass desired TLS hostname through from block driver client
  crypto: mandate a hostname when checking x509 creds on a client

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-03-09 11:38:29 +00:00
Mark Cave-Ayland a7a2208862 esp: recreate ESPState current_req after migration
Since PDMA reads/writes are driven by the guest, it is possible that migration
can occur whilst a SCSIRequest is still active. Fortunately active SCSIRequests
are already included in the migration stream and restarted post migration but
this still leaves the reference in ESPState uninitialised.

Implement the SCSIBusInfo .load_request callback to obtain a reference to the
currently active SCSIRequest and use it to recreate ESPState current_req
after migration.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220305155530.9265-11-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2022-03-09 09:29:10 +00:00
Mark Cave-Ayland eda59b392d esp: include the current PDMA callback in the migration stream
This involves (re)adding a PDMA-specific subsection to hold the reference to the
current PDMA callback.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220305155530.9265-10-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2022-03-09 09:29:10 +00:00
Mark Cave-Ayland 77987ef5a3 esp: convert ESPState pdma_cb from a function pointer to an integer
This prepares for the inclusion of the current PDMA callback in the migration
stream since the callback is referenced by an integer instead of a function
pointer.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220305155530.9265-9-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2022-03-09 09:29:10 +00:00
Mark Cave-Ayland d0243b094b esp: introduce esp_pdma_cb() function
This function is to be used to execute the current PDMA callback rather than
dereferencing the ESPState pdma_cb function pointer directly.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220305155530.9265-8-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2022-03-09 09:29:10 +00:00
Mark Cave-Ayland 1e794c51c4 esp: introduce esp_set_pdma_cb() function
This function is to be used to set the current PDMA callback rather than
accessing the ESPState pdma_cb function pointer directly.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220305155530.9265-7-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2022-03-09 09:29:10 +00:00
Mark Cave-Ayland e20d0b84a8 macfb: set initial value of mode control registers in macfb_common_realize()
If booting Linux directly in the q800 machine using -kernel rather than using a
MacOS toolbox ROM, the mode control registers are never initialised,
causing macfb_mode_write() to fail to determine the current resolution after
migration. Resolve this by always setting the initial values of the mode control
registers based upon the initial macfb properties during realize.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220305155530.9265-6-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2022-03-09 09:29:10 +00:00