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We are generally moving to int64_t for both offset and bytes parameters
on all io paths.
Main motivation is realization of 64-bit write_zeroes operation for
fast zeroing large disk chunks, up to the whole disk.
We chose signed type, to be consistent with off_t (which is signed) and
with possibility for signed return type (where negative value means
error).
So, prepare bdrv_co_do_pwrite_zeroes() now.
Callers are safe, as converting int to int64_t is safe. Concentrate on
'bytes' usage in the function (thx to Eric Blake):
compute 'int tail' via % 'int alignment' - safe
fragmentation loop 'int num' - still fragments with a cap on
max_transfer
use of 'num' within the loop
MIN(bytes, max_transfer) as well as %alignment - still works, so
calculations in if (head) {} are safe
clamp size by 'int max_write_zeroes' - safe
drv->bdrv_co_pwrite_zeroes(int) - safe because of clamping
clamp size by 'int max_transfer' - safe
buf allocation is still clamped to max_transfer
qemu_iovec_init_buf(size_t) - safe because of clamping
bdrv_driver_pwritev(uint64_t) - safe
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-11-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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We are generally moving to int64_t for both offset and bytes parameters
on all io paths.
Main motivation is realization of 64-bit write_zeroes operation for
fast zeroing large disk chunks, up to the whole disk.
We chose signed type, to be consistent with off_t (which is signed) and
with possibility for signed return type (where negative value means
error).
So, convert driver wrappers parameters which are already 64bit to
signed type.
Requests in block/io.c must never exceed BDRV_MAX_LENGTH (which is less
than INT64_MAX), which makes the conversion to signed 64bit type safe.
Add corresponding assertions.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-10-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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We are generally moving to int64_t for both offset and bytes parameters
on all io paths.
Main motivation is realization of 64-bit write_zeroes operation for
fast zeroing large disk chunks, up to the whole disk.
We chose signed type, to be consistent with off_t (which is signed) and
with possibility for signed return type (where negative value means
error).
All requests in block/io must not overflow BDRV_MAX_LENGTH, all
external users of BdrvTrackedRequest already have corresponding
assertions, so we are safe. Add some assertions still.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-9-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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Operations with qiov add more restrictions on bytes, let's cover it.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-8-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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The function is called from 64bit io handlers, and bytes is just passed
to throttle_account() which is 64bit too (unsigned though). So, let's
convert intermediate argument to 64bit too.
This patch is a first in the 64-bit-blocklayer series, so we are
generally moving to int64_t for both offset and bytes parameters on all
io paths. Main motivation is realization of 64-bit write_zeroes
operation for fast zeroing large disk chunks, up to the whole disk.
We chose signed type, to be consistent with off_t (which is signed) and
with possibility for signed return type (where negative value means
error).
Patch-correctness audit by Eric Blake:
Caller has 32-bit, this patch now causes widening which is safe:
block/block-backend.c: blk_do_preadv() passes 'unsigned int'
block/block-backend.c: blk_do_pwritev_part() passes 'unsigned int'
block/throttle.c: throttle_co_pwrite_zeroes() passes 'int'
block/throttle.c: throttle_co_pdiscard() passes 'int'
Caller has 64-bit, this patch fixes potential bug where pre-patch
could narrow, except it's easy enough to trace that callers are still
capped at 2G actions:
block/throttle.c: throttle_co_preadv() passes 'uint64_t'
block/throttle.c: throttle_co_pwritev() passes 'uint64_t'
Implementation in question: block/throttle-groups.c
throttle_group_co_io_limits_intercept() takes 'unsigned int bytes'
and uses it: argument to util/throttle.c throttle_account(uint64_t)
All safe: it patches a latent bug, and does not introduce any 64-bit
gotchas once throttle_co_p{read,write}v are relaxed, and assuming
throttle_account() is not buggy.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20201211183934.169161-7-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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Make bdrv_pad_request() honest: return error if
qemu_iovec_init_extended() failed.
Update also bdrv_padding_destroy() to clean the structure for safety.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-6-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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Prepare for the following patch when bdrv_pad_request() will be able to
fail. Update the comments.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-5-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: grammar tweak]
Signed-off-by: Eric Blake <eblake@redhat.com>
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Calculation of sum may theoretically overflow, so use 64bit type and
add some good assertions.
Use int64_t constantly.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-4-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: tweak assertion order]
Signed-off-by: Eric Blake <eblake@redhat.com>
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Actually, we can't extend the io vector in all cases. Handle possible
MAX_IOV and size_t overflows.
For now add assertion to callers (actually they rely on success anyway)
and fix them in the following patch.
Add also some additional good assertions to qemu_iovec_init_slice()
while being here.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-3-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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It's better to pass &error_abort than just assert that result is 0: on
crash, we'll immediately see the reason in the backtrace.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-2-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: fix iotest 206 fallout]
Signed-off-by: Eric Blake <eblake@redhat.com>
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Commit f93e19fb03b adjusted various iotest whitespace discrepancies.
But another one snuck in during 61623f82153788e, and we missed the
semantic merge conflict at the time because 185 is not run as part of
the default 'make check'.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210202185914.614705-1-eblake@redhat.com>
[eblake: adjust commit message]
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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'remotes/pmaydell/tags/pull-target-arm-20210203' into staging
target-arm queue:
* hw/intc/arm_gic: Allow to use QTest without crashing
* hw/char/exynos4210_uart: Fix buffer size reporting with FIFO disabled
* hw/char/exynos4210_uart: Fix missing call to report ready for input
* hw/arm/smmuv3: Fix addr_mask for range-based invalidation
* hw/ssi/imx_spi: Fix various minor bugs
* hw/intc/arm_gic: Fix interrupt ID in GICD_SGIR register
* hw/arm: Add missing Kconfig dependencies
* hw/arm: Display CPU type in machine description
# gpg: Signature made Wed 03 Feb 2021 10:16:36 GMT
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20210203: (21 commits)
hw/arm: Display CPU type in machine description
hw/net/can: ZynqMP CAN device requires PTIMER
hw/arm/xlnx-versal: Versal SoC requires ZynqMP peripherals
hw/arm/xlnx-versal: Versal SoC requires ZDMA
hw/arm/exynos4210: Add missing dependency on OR_IRQ
hw/arm/stm32f405_soc: Add missing dependency on OR_IRQ
hw/intc/arm_gic: Fix interrupt ID in GICD_SGIR register
hw/ssi: imx_spi: Correct tx and rx fifo endianness
hw/ssi: imx_spi: Correct the burst length > 32 bit transfer logic
hw/ssi: imx_spi: Round up the burst length to be multiple of 8
hw/ssi: imx_spi: Disable chip selects when controller is disabled
hw/ssi: imx_spi: Rework imx_spi_write() to handle block disabled
hw/ssi: imx_spi: Rework imx_spi_read() to handle block disabled
hw/ssi: imx_spi: Rework imx_spi_reset() to keep CONREG register value
hw/ssi: imx_spi: Remove pointless variable initialization
hw/ssi: imx_spi: Remove imx_spi_update_irq() in imx_spi_reset()
hw/ssi: imx_spi: Use a macro for number of chip selects supported
hw/arm/smmuv3: Fix addr_mask for range-based invalidation
hw/char/exynos4210_uart: Fix missing call to report ready for input
hw/char/exynos4210_uart: Fix buffer size reporting with FIFO disabled
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Most of ARM machines display their CPU when QEMU list the available
machines (-M help). Some machines do not. Fix to unify the help
output.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210131184449.382425-7-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Add a dependency XLNX_ZYNQMP -> PTIMER to fix:
/usr/bin/ld:
libcommon.fa.p/hw_net_can_xlnx-zynqmp-can.c.o: in function `xlnx_zynqmp_can_realize':
hw/net/can/xlnx-zynqmp-can.c:1082: undefined reference to `ptimer_init'
hw/net/can/xlnx-zynqmp-can.c:1085: undefined reference to `ptimer_transaction_begin'
hw/net/can/xlnx-zynqmp-can.c:1087: undefined reference to `ptimer_set_freq'
hw/net/can/xlnx-zynqmp-can.c:1088: undefined reference to `ptimer_set_limit'
hw/net/can/xlnx-zynqmp-can.c:1089: undefined reference to `ptimer_run'
hw/net/can/xlnx-zynqmp-can.c:1090: undefined reference to `ptimer_transaction_commit'
libcommon.fa.p/hw_net_can_xlnx-zynqmp-can.c.o:(.data.rel+0x2c8): undefined reference to `vmstate_ptimer'
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210131184449.382425-6-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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The Versal SoC instantiates the TYPE_XLNX_ZYNQMP_RTC object in
versal_create_rtc()(). Select CONFIG_XLNX_ZYNQMP to fix:
$ make check-qtest-aarch64
...
Running test qtest-aarch64/qom-test
qemu-system-aarch64: missing object type 'xlnx-zynmp.rtc'
Broken pipe
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210131184449.382425-5-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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The Versal SoC instantiates the TYPE_XLNX_ZDMA object in
versal_create_admas(). Introduce the XLNX_ZDMA configuration
and select it to fix:
$ qemu-system-aarch64 -M xlnx-versal-virt ...
qemu-system-aarch64: missing object type 'xlnx.zdma'
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210131184449.382425-4-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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The Exynos4210 SoC uses an OR gate on the PL330 IRQ lines.
Fixes: dab15fbe2ab ("hw/arm/exynos4210: Fix DMA initialization")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210131184449.382425-3-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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The STM32F405 SoC uses an OR gate on its ADC IRQs.
Fixes: 529fc5fd3e1 ("hw/arm: Add the STM32F4xx SoC")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210131184449.382425-2-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Per the ARM Generic Interrupt Controller Architecture specification
(document "ARM IHI 0048B.b (ID072613)"), the SGIINTID field is 4 bit,
not 10:
- 4.3 Distributor register descriptions
- 4.3.15 Software Generated Interrupt Register, GICD_SG
- Table 4-21 GICD_SGIR bit assignments
The Interrupt ID of the SGI to forward to the specified CPU
interfaces. The value of this field is the Interrupt ID, in
the range 0-15, for example a value of 0b0011 specifies
Interrupt ID 3.
Correct the irq mask to fix an undefined behavior (which eventually
lead to a heap-buffer-overflow, see [Buglink]):
$ echo 'writel 0x8000f00 0xff4affb0' | qemu-system-aarch64 -M virt,accel=qtest -qtest stdio
[I 1612088147.116987] OPENED
[R +0.278293] writel 0x8000f00 0xff4affb0
../hw/intc/arm_gic.c:1498:13: runtime error: index 944 out of bounds for type 'uint8_t [16][8]'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior ../hw/intc/arm_gic.c:1498:13
This fixes a security issue when running with KVM on Arm with
kernel-irqchip=off. (The default is kernel-irqchip=on, which is
unaffected, and which is also the correct choice for performance.)
Cc: qemu-stable@nongnu.org
Fixes: CVE-2021-20221
Fixes: 9ee6e8bb853 ("ARMv7 support.")
Buglink: https://bugs.launchpad.net/qemu/+bug/1913916
Buglink: https://bugs.launchpad.net/qemu/+bug/1913917
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210131103401.217160-1-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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The endianness of data exchange between tx and rx fifo is incorrect.
Earlier bytes are supposed to show up on MSB and later bytes on LSB,
ie: in big endian. The manual does not explicitly say this, but the
U-Boot and Linux driver codes have a swap on the data transferred
to tx fifo and from rx fifo.
With this change, U-Boot read from / write to SPI flash tests pass.
=> sf test 1ff000 1000
SPI flash test:
0 erase: 0 ticks, 4096000 KiB/s 32768.000 Mbps
1 check: 3 ticks, 1333 KiB/s 10.664 Mbps
2 write: 235 ticks, 17 KiB/s 0.136 Mbps
3 read: 2 ticks, 2000 KiB/s 16.000 Mbps
Test passed
0 erase: 0 ticks, 4096000 KiB/s 32768.000 Mbps
1 check: 3 ticks, 1333 KiB/s 10.664 Mbps
2 write: 235 ticks, 17 KiB/s 0.136 Mbps
3 read: 2 ticks, 2000 KiB/s 16.000 Mbps
Fixes: c906a3a01582 ("i.MX: Add the Freescale SPI Controller")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20210129132323.30946-11-bmeng.cn@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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For the ECSPIx_CONREG register BURST_LENGTH field, the manual says:
0x020 A SPI burst contains the 1 LSB in first word and all 32 bits in second word.
0x021 A SPI burst contains the 2 LSB in first word and all 32 bits in second word.
Current logic uses either s->burst_length or 32, whichever smaller,
to determine how many bits it should read from the tx fifo each time.
For example, for a 48 bit burst length, current logic transfers the
first 32 bit from the first word in the tx fifo, followed by a 16
bit from the second word in the tx fifo, which is wrong. The correct
logic should be: transfer the first 16 bit from the first word in
the tx fifo, followed by a 32 bit from the second word in the tx fifo.
With this change, SPI flash can be successfully probed by U-Boot on
imx6 sabrelite board.
=> sf probe
SF: Detected sst25vf016b with page size 256 Bytes, erase size 4 KiB, total 2 MiB
Fixes: c906a3a01582 ("i.MX: Add the Freescale SPI Controller")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210129132323.30946-10-bmeng.cn@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Current implementation of the imx spi controller expects the burst
length to be multiple of 8, which is the most common use case.
In case the burst length is not what we expect, log it to give user
a chance to notice it, and round it up to be multiple of 8.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Message-id: 20210129132323.30946-9-bmeng.cn@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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When a write to ECSPI_CONREG register to disable the SPI controller,
imx_spi_soft_reset() is called to reset the controller, but chip
select lines should have been disabled, otherwise the state machine
of any devices (e.g.: SPI flashes) connected to the SPI master is
stuck to its last state and responds incorrectly to any follow-up
commands.
Fixes: c906a3a01582 ("i.MX: Add the Freescale SPI Controller")
Signed-off-by: Xuzhou Cheng <xuzhou.cheng@windriver.com>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210129132323.30946-8-bmeng.cn@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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When the block is disabled, only the ECSPI_CONREG register can
be modified. Setting the EN bit enabled the device, clearing it
"disables the block and resets the internal logic with the
exception of the ECSPI_CONREG" register.
Ignore all other registers write except ECSPI_CONREG when the
block is disabled.
Ref: i.MX 6DQ Applications Processor Reference Manual (IMX6DQRM),
chapter 21.7.3: Control Register (ECSPIx_CONREG)
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20210129132323.30946-7-bmeng.cn@gmail.com
Message-Id: <20210115153049.3353008-6-f4bug@amsat.org>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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When the block is disabled, it stay it is 'internal reset logic'
(internal clocks are gated off). Reading any register returns
its reset value. Only update this value if the device is enabled.
Ref: i.MX 6DQ Applications Processor Reference Manual (IMX6DQRM),
chapter 21.7.3: Control Register (ECSPIx_CONREG)
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Message-id: 20210129132323.30946-6-bmeng.cn@gmail.com
Message-Id: <20210115153049.3353008-5-f4bug@amsat.org>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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When the block is disabled, all registers are reset with the
exception of the ECSPI_CONREG. It is initialized to zero
when the instance is created.
Ref: i.MX 6DQ Applications Processor Reference Manual (IMX6DQRM),
chapter 21.7.3: Control Register (ECSPIx_CONREG)
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210129132323.30946-5-bmeng.cn@gmail.com
[bmeng: add a 'common_reset' function that does most of reset operation]
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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'burst_length' is cleared in imx_spi_reset(), which is called
after imx_spi_realize(). Remove the initialization to simplify.
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Message-id: 20210129132323.30946-4-bmeng.cn@gmail.com
Message-Id: <20210115153049.3353008-3-f4bug@amsat.org>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Usually the approach is that the device on the other end of the line
is going to reset its state anyway, so there's no need to actively
signal an irq line change during the reset hook.
Move imx_spi_update_irq() out of imx_spi_reset(), to a new function
imx_spi_soft_reset() that is called when the controller is disabled.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20210129132323.30946-3-bmeng.cn@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Avoid using a magic number (4) everywhere for the number of chip
selects supported.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-id: 20210129132323.30946-2-bmeng.cn@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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When handling guest range-based IOTLB invalidation, we should decode the TG
field into the corresponding translation granule size so that we can pass
the correct invalidation range to backend. Set @granule to (tg * 2 + 10) to
properly emulate the architecture.
Fixes: d52915616c05 ("hw/arm/smmuv3: Get prepared for range invalidation")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Acked-by: Eric Auger <eric.auger@redhat.com>
Message-id: 20210130043220.1345-1-yuzenghui@huawei.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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When the frontend device has no space for a read the fd is removed
from polling to allow time for the guest to read and clear the buffer.
Without the call to qemu_chr_fe_accept_input(), the poll will not be
broken out of when the guest has cleared the buffer causing significant
IO delays that get worse with smaller buffers.
Buglink: https://bugs.launchpad.net/qemu/+bug/1913341
Signed-off-by: Iris Johnson <iris@modwiz.com>
Message-id: 20210130184016.1787097-1-iris@modwiz.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Currently the Exynos 4210 UART code always reports available FIFO space
when the backend checks for buffer space. When the FIFO is disabled this
is behavior causes the backend chardev code to replace the data before the
guest can read it.
This patch changes adds the logic to report the capacity properly when the
FIFO is not being used.
Buglink: https://bugs.launchpad.net/qemu/+bug/1913344
Signed-off-by: Iris Johnson <iris@modwiz.com>
Message-id: 20210128033655.1029577-1-iris@modwiz.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Alexander reported an issue in gic_get_current_cpu() using the
fuzzer. Yet another "deref current_cpu with QTest" bug, reproducible
doing:
$ echo readb 0xf03ff000 | qemu-system-arm -M npcm750-evb,accel=qtest -qtest stdio
[I 1611849440.651452] OPENED
[R +0.242498] readb 0xf03ff000
hw/intc/arm_gic.c:63:29: runtime error: member access within null pointer of type 'CPUState' (aka 'struct CPUState')
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior hw/intc/arm_gic.c:63:29 in
AddressSanitizer:DEADLYSIGNAL
=================================================================
==3719691==ERROR: AddressSanitizer: SEGV on unknown address 0x0000000082a0 (pc 0x5618790ac882 bp 0x7ffca946f4f0 sp 0x7ffca946f4a0 T0)
==3719691==The signal is caused by a READ memory access.
#0 0x5618790ac882 in gic_get_current_cpu hw/intc/arm_gic.c:63:29
#1 0x5618790a8901 in gic_dist_readb hw/intc/arm_gic.c:955:11
#2 0x5618790a7489 in gic_dist_read hw/intc/arm_gic.c:1158:17
#3 0x56187adc573b in memory_region_read_with_attrs_accessor softmmu/memory.c:464:9
#4 0x56187ad7903a in access_with_adjusted_size softmmu/memory.c:552:18
#5 0x56187ad766d6 in memory_region_dispatch_read1 softmmu/memory.c:1426:16
#6 0x56187ad758a8 in memory_region_dispatch_read softmmu/memory.c:1449:9
#7 0x56187b09e84c in flatview_read_continue softmmu/physmem.c:2822:23
#8 0x56187b0a0115 in flatview_read softmmu/physmem.c:2862:12
#9 0x56187b09fc9e in address_space_read_full softmmu/physmem.c:2875:18
#10 0x56187aa88633 in address_space_read include/exec/memory.h:2489:18
#11 0x56187aa88633 in qtest_process_command softmmu/qtest.c:558:13
#12 0x56187aa81881 in qtest_process_inbuf softmmu/qtest.c:797:9
#13 0x56187aa80e02 in qtest_read softmmu/qtest.c:809:5
current_cpu is NULL because QTest accelerator does not use CPU.
Fix by skipping the check and returning the first CPU index when
QTest accelerator is used, similarly to commit c781a2cc423
("hw/i386/vmport: Allow QTest use without crashing").
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Message-id: 20210128161417.3726358-1-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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'remotes/ehabkost-gl/tags/machine-next-pull-request' into staging
Machine queue, 2021-02-02
Feature:
* nvdimm: read-only file support (Stefan Hajnoczi)
# gpg: Signature made Tue 02 Feb 2021 19:27:21 GMT
# gpg: using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg: issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost-gl/tags/machine-next-pull-request:
nvdimm: check -object memory-backend-file, readonly=on option
hostmem-file: add readonly=on|off option
memory: add readonly support to memory_region_init_ram_from_file()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Check that -device nvdimm,unarmed=on is used when -object
memory-backend-file,readonly=on and document that -device
nvdimm,unarmed=on|off controls whether the NVDIMM appears read-only to
the guest.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20210104171320.575838-4-stefanha@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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Let -object memory-backend-file work on read-only files when the
readonly=on option is given. This can be used to share the contents of a
file between multiple guests while preventing them from consuming
Copy-on-Write memory if guests dirty the pages, for example.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20210104171320.575838-3-stefanha@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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There is currently no way to open(O_RDONLY) and mmap(PROT_READ) when
creating a memory region from a file. This functionality is needed since
the underlying host file may not allow writing.
Add a bool readonly argument to memory_region_init_ram_from_file() and
the APIs it calls.
Extend memory_region_init_ram_from_file() rather than introducing a
memory_region_init_rom_from_file() API so that callers can easily make a
choice between read/write and read-only at runtime without calling
different APIs.
No new RAMBlock flag is introduced for read-only because it's unclear
whether RAMBlocks need to know that they are read-only. Pass a bool
readonly argument instead.
Both of these design decisions can be changed in the future. It just
seemed like the simplest approach to me.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20210104171320.575838-2-stefanha@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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Block layer patches:
- Fix double processing of nodes in bdrv_set_aio_context()
- Fix potential hang in block export shutdown
- block/nvme: Minor tracing improvements
- iotests: Some more fixups for the 'check' rewrite
- MAINTAINERS: Add Vladimir as co-maintainer for Block Jobs
# gpg: Signature made Tue 02 Feb 2021 16:26:02 GMT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* remotes/kevin/tags/for-upstream:
block: Fix VM size column width in bdrv_snapshot_dump()
block/nvme: Trace NVMe spec version supported by the controller
block/nvme: Properly display doorbell stride length in trace event
iotests: Fix -makecheck output
iotests: check: return 1 on failure
iotests: Revert emulator selection to old behaviour
iotests/297: pylint: ignore too many statements
block: move blk_exp_close_all() to qemu_cleanup()
block: Avoid processing BDS twice in bdrv_set_aio_context_ignore()
MAINTAINERS: Add Vladimir as co-maintainer for Block Jobs
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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size_to_str() can return a size like "4.24 MiB", with a single digit
integer part and two fractional digits. This is eight characters, but
commit b39847a5 changed the format string to only reserve seven
characters for the column.
This can result in unaligned columns, which in turn changes the output of
iotests case 267 because exceeding the column size defeats the attempt
to filter the size out of the output (observed with the ppc64 emulator).
The resulting change is only a whitespace change, but since commit
f203080b this is enough for iotests to consider the test failed.
Taking a character away from the tag name column and adding it to the VM
size column doesn't change anything in the common case (the tag name is
left justified, the VM size is right justified), but fixes this case.
Fixes: b39847a50553b7679d6d7fefbe6a108a17aacf8d
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210202155911.179865-1-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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NVMe controllers implement different versions of the spec,
and different features of it. It is useful to gather this
information when debugging.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210127212137.3482291-3-philmd@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Commit 15b2260bef3 ("block/nvme: Trace controller capabilities")
misunderstood the doorbell stride value from the datasheet, use
the correct one. The 'doorbell_scale' variable used few lines
later is correct.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210127212137.3482291-2-philmd@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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For -makecheck, the old 'check' implementation skipped the output when
starting a test. It only had the condensed output at the end of a test.
testrunner.py prints the normal output when starting a test even for
-makecheck. This output contains '\r' at the end so that it can be
overwritten with the result at the end of the test. However, for
-makecheck this is shorter output in a different format, so effectively
we end up with garbled output that mixes both output forms.
Revert to the old behaviour of only printing a message after the test
had completed in -makecheck mode.
Fixes: d74c754c924ca34e90b7c96ce2f5609d82c0e628
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210201161024.127921-1-kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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We should indicate failure by exit code, not only output.
Reported-by: Peter Maydell
Fixes: f203080bbd9f9e5b31041b1f2afcd6040c5aaec5
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210201085041.3079-1-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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If the qemu-system-{arch} binary for the host architecture can't be
found, the old 'check' implementation selected the alphabetically first
system emulator binary that it could find. The new Python implementation
just uses the first result of glob.iglob(), which has an undefined
order.
This is a problem that breaks CI because the iotests aren't actually
prepared to run on any emulator. They should be, so this is really a bug
in the failing test cases that should be fixed there, but as a quick
fix, let's revert to the old behaviour to let CI runs succeed again.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210202142802.119999-1-kwolf@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Ignore two complains, which now lead to 297 failure on testenv.py and
testrunner.py.
Fixes: 2e5a2f57db481f18fcf70be2a36b1417370b8476
Fixes: d74c754c924ca34e90b7c96ce2f5609d82c0e628
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210129161323.615027-1-vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Move blk_exp_close_all() from bdrv_close() to qemu_cleanup(), before
bdrv_drain_all_begin().
Export drivers may have coroutines yielding at some point in the block
layer, so we need to shut them down before draining the block layer,
as otherwise they may get stuck blk_wait_while_drained().
RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1900505
Signed-off-by: Sergio Lopez <slp@redhat.com>
Message-Id: <20210201125032.44713-3-slp@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Some graphs may contain an indirect reference to the first BDS in the
chain that can be reached while walking it bottom->up from one its
children.
Doubling-processing of a BDS is especially problematic for the
aio_notifiers, as they might attempt to work on both the old and the
new AIO contexts.
To avoid this problem, add every child and parent to the ignore list
before actually processing them.
Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Sergio Lopez <slp@redhat.com>
Message-Id: <20210201125032.44713-2-slp@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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I'm developing Qemu backup for several years, and finally new backup
architecture, including block-copy generic engine and backup-top filter
landed upstream, great thanks to reviewers and especially to
Max Reitz!
I also have plans of moving other block-jobs onto block-copy, so that
we finally have one generic block copying path, fast and well-formed.
So, now I suggest to bring all parts of backup architecture into
"Block Jobs" subsystem (actually, aio_task is shared with qcow2 and
qemu-co-shared-resource can be reused somewhere else, but I'd keep an
eye on them in context of block-jobs) and add myself as co-maintainer.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210128144144.27617-1-vsementsov@virtuozzo.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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'remotes/stefanha-gitlab/tags/tracing-pull-request' into staging
Pull request
# gpg: Signature made Mon 01 Feb 2021 15:46:52 GMT
# gpg: using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8
* remotes/stefanha-gitlab/tags/tracing-pull-request:
trace: update docs with meson build information
trace: document how to specify multiple --trace patterns
simpletrace: build() missing 2 required positional arguments
trace: make the 'log' backend timestamp configurable
error: rename error_with_timestamp to message_with_timestamp
trace: add meson custom_target() depend_files for tracetool
tracetool: also strip %l and %ll from systemtap format strings
tracetool: fix "PRI" macro decoding
trace: recommend "log" backend for getting started with tracing
tracing: convert documentation to rST
trace: fix simpletrace doc mismerge
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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The documentation still refers to the makefile and the old sub-directory
layout. Meson works differently: tracetool output is placed into the
builddir with mangled filenames like <builddir>/trace/trace-accel_kvm.h
for the accel/kvm/ trace.h definition.
This meson setup also requires a manually-created accel/kvm/trace.h file
that #includes the <builddir>/trace/trace-accel_kvm.h file. Document
this!
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20210112165859.225534-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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