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76997 commits

Author SHA1 Message Date
Dongjiu Geng 5fb004a265 docs: APEI GHES generation and CPER record description
Add APEI/GHES detailed design document

Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
Signed-off-by: Xiang Zheng <zhengxiang9@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-id: 20200512030609.19593-4-gengdongjiu@huawei.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:09 +01:00
Dongjiu Geng 2afa8c8519 hw/arm/virt: Introduce a RAS machine option
RAS Virtualization feature is not supported now, so
add a RAS machine option and disable it by default.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
Signed-off-by: Xiang Zheng <zhengxiang9@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-id: 20200512030609.19593-3-gengdongjiu@huawei.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:09 +01:00
Dongjiu Geng 1439f21307 acpi: nvdimm: change NVDIMM_UUID_LE to a common macro
The little end UUID is used in many places, so make
NVDIMM_UUID_LE to a common macro to convert the UUID
to a little end array.

Reviewed-by: Xiang Zheng <zhengxiang9@huawei.com>
Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
Message-id: 20200512030609.19593-2-gengdongjiu@huawei.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Patrick Williams 143b040f4a aspeed: Add support for the sonorapass-bmc board
Sonora Pass is a 2 socket x86 motherboard designed by Facebook
and supported by OpenBMC.  Strapping configuration was obtained
from hardware and i2c configuration is based on dts found at:

1633c87b8b/arch/arm/boot/dts/aspeed-bmc-facebook-sonorapass.dts

Booted a test image of http://github.com/facebook/openbmc to login
prompt.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Reviewed-by: Amithash Prasad <amithash@fb.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
[PMM: fixed block comment style nit]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson cfdb2c0c95 target/arm: Vectorize SABA/UABA
Include 64-bit element size in preparation for SVE2.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 50c160d44e target/arm: Vectorize SABD/UABD
Include 64-bit element size in preparation for SVE2.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-16-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 525d9b6d42 target/arm: Clear tail in gvec_fmul_idx_*, gvec_fmla_idx_*
Must clear the tail for AdvSIMD when SVE is enabled.

Fixes: ca40a6e6e3
Cc: qemu-stable@nongnu.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-15-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson e286bf4a72 target/arm: Pass pointer to qc to qrdmla/qrdmls
Pass a pointer directly to env->vfp.qc[0], rather than env.
This will allow SVE2, which does not modify QC, to pass a
pointer to dummy storage.

Change the return type of inl_qrdml.h_s16 to match the
sense of the operation: signed.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-14-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 146aa66ce5 target/arm: Create gen_gvec_{qrdmla,qrdmls}
Provide a functional interface for the vector expansion.
This fits better with the existing set of helpers that
we provide for other operations.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-13-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson fe6fb4beb2 target/arm: Remove fp_status from helper_{recpe, rsqrte}_u32
These operations do not touch fp_status.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson c7715b6b51 target/arm: Create gen_gvec_{uqadd, sqadd, uqsub, sqsub}
Provide a functional interface for the vector expansion.
This fits better with the existing set of helpers that
we provide for other operations.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-11-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 8161b75357 target/arm: Create gen_gvec_{cmtst,ushl,sshl}
Provide a functional interface for the vector expansion.
This fits better with the existing set of helpers that
we provide for other operations.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-10-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson e9eee5316f target/arm: Swap argument order for VSHL during decode
Rather than perform the argument swap during code generation,
perform it during decode.  This means it doesn't have to be
special cased later, and we can share code with aarch64 code
generation.  Hopefully the decode comment addresses any confusion
that might arise in between.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 271063206a target/arm: Create gen_gvec_{mla,mls}
Provide a functional interface for the vector expansion.
This fits better with the existing set of helpers that
we provide for other operations.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-8-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 69d5e2bf8c target/arm: Create gen_gvec_{ceq,clt,cle,cgt,cge}0
Provide a functional interface for the vector expansion.
This fits better with the existing set of helpers that
we provide for other operations.

Macro-ize the 5 nearly identical comparisons.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 3f08f0bce8 target/arm: Tidy handle_vec_simd_shri
Now that we've converted all cases to gvec, there is quite a bit
of dead code at the end of the function.  Remove it.

Sink the call to gen_gvec_fn2i to the end, loading a function
pointer within the switch statement.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 2f27c5244d target/arm: Remove unnecessary range check for VSHL
In 1dc8425e55, while converting to gvec, I added an extra range check
against the shift count.  This was unnecessary because the encoding of
the shift count produces 0 to the element size - 1.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 893ab0542a target/arm: Create gen_gvec_{sri,sli}
The functions eliminate duplication of the special cases for
this operation.  They match up with the GVecGen2iFn typedef.

Add out-of-line helpers.  We got away with only having inline
expanders because the neon vector size is only 16 bytes, and
we know that the inline expansion will always succeed.
When we reuse this for SVE, tcg-gvec-op may decide to use an
out-of-line helper due to longer vector lengths.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 6ccd48d4ea target/arm: Create gen_gvec_{u,s}{rshr,rsra}
Create vectorized versions of handle_shri_with_rndacc
for shift+round and shift+round+accumulate.  Add out-of-line
helpers in preparation for longer vector lengths from SVE.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Richard Henderson 631e565450 target/arm: Create gen_gvec_[us]sra
The functions eliminate duplication of the special cases for
this operation.  They match up with the GVecGen2iFn typedef.

Add out-of-line helpers.  We got away with only having inline
expanders because the neon vector size is only 16 bytes, and
we know that the inline expansion will always succeed.
When we reuse this for SVE, tcg-gvec-op may decide to use an
out-of-line helper due to longer vector lengths.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 15:03:08 +01:00
Peter Maydell c888f7e0fd target/arm: Use correct GDB XML for M-profile cores
GDB's remote protocol requires M-profile cores to use the feature
name 'org.gnu.gdb.arm.m-profile' instead of the 'org.gnu.gdb.arm.core'
feature used for A- and R-profile cores. We weren't doing this, which
meant GDB treated our M-profile cores like A-profile ones. This mostly
doesn't matter, but for instance means that it doesn't correctly
handle backtraces where an M-profile exception frame is involved.

Ship a copy of GDB's arm-m-profile.xml and use it on the M-profile
cores.  The integer registers have the same offsets as the
arm-core.xml, but register 25 is the M-profile XPSR rather than the
A-profile CPSR, so we need to update arm_cpu_gdb_read_register() and
arm_cpu_gdb_write_register() to handle XSPR reads and writes.

Fixes: https://bugs.launchpad.net/qemu/+bug/1877136
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200507134755.13997-1-peter.maydell@linaro.org
2020-05-14 15:03:08 +01:00
Joe Komlodi 2ead1b18ca target/microblaze: monitor: Increase the number of registers reported
Increase the number of registers reported to match GDB.

Registers that aren't modeled are reported as 0.

Signed-off-by: Joe Komlodi <komlodi@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <1589393329-223076-4-git-send-email-komlodi@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2020-05-14 16:01:02 +02:00
Joe Komlodi 201dd7d37b target/microblaze: gdb: Fix incorrect SReg reporting
SRegs used to be reported to GDB by iterating over the SRegs array,
however we do not store them in an order that allows them to be
reported to GDB in that way.

To fix this, a simple map is used to map the register GDB wants to its
location in the SRegs array.

Signed-off-by: Joe Komlodi <komlodi@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <1589393329-223076-3-git-send-email-komlodi@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2020-05-14 16:01:02 +02:00
Joe Komlodi a44e82db0c target/microblaze: gdb: Extend the number of registers presented to GDB
Increase the number of Microblaze registers QEMU will report when
talking to GDB.

Signed-off-by: Joe Komlodi <komlodi@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <1589393329-223076-2-git-send-email-komlodi@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2020-05-14 16:01:00 +02:00
Changbin Du 32ec9839d8 ui/sdl2: fix segment fault caused by null pointer dereference
I found SDL_GetWindowFromID() sometimes return NULL when I start qemu via
ssh forwarding even the window has been crated already. I am not sure
whether this is a bug of SDL, but we'd better check it carefully.

Signed-off-by: Changbin Du <changbin.du@gmail.com>
Message-id: 20200427132412.17909-1-changbin.du@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-14 14:26:42 +02:00
Gerd Hoffmann df2ac3cc12 ui: improve -show-cursor deprecation message
Specifically explain what users should do in case they don't use
-display yet and depend on the qemu picking the ui for them.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200407093617.10058-1-kraxel@redhat.com
2020-05-14 14:26:02 +02:00
Joe Komlodi 2016a6a765 target/microblaze: Fix FPU2 instruction check
The check to see if we can use FPU2 instructions would return 0 if
cfg.use_fpu == 2, rather than returning the PVR2_USE_FPU2_MASK.

This would cause all FPU2 instructions (fsqrt, flt, fint) to not be used.

Signed-off-by: Joe Komlodi <komlodi@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <1589219346-106769-2-git-send-email-komlodi@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2020-05-14 13:44:36 +02:00
Tong Ho 7cdae31d3a target/microblaze: Add MFS Rd,EDR translation
This is to fix cpu-abort with 'qemu: fatal: unknown mfs reg d'
(in the default case) when microblaze guest issues 'MFS Rd,EDR'
instruction.

Since embeddedsw release 2019.2, XPlm_ExceptionHandler() issues
the instruction on exception, and microblaze model aborts when
PLM firmware guest encounters an exception.

Signed-off-by: Tong Ho <tong.ho@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Message-Id: <20200512143649.21655-2-edgar.iglesias@gmail.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2020-05-14 13:44:36 +02:00
Edgar E. Iglesias 6d0af39f81 MAINTAINERS: Add myself as streams maintainer
Since we're missing a maintainer, add myself.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200506082513.18751-10-edgar.iglesias@gmail.com>
2020-05-14 13:44:35 +02:00
Edgar E. Iglesias 734e3befc2 hw/dma/xilinx_axidma: s2mm: Support stream fragments
Add support for stream fragments.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <20200506082513.18751-9-edgar.iglesias@gmail.com>
2020-05-14 13:44:35 +02:00
Edgar E. Iglesias 471fe8a252 hw/dma/xilinx_axidma: mm2s: Stream descriptor by descriptor
Stream descriptor by descriptor from memory instead of
buffering entire packets before pushing. This enables
non-packet streaming clients to work and also lifts the
limitation that our internal DMA buffer needs to be able
to hold entire packets.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <20200506082513.18751-8-edgar.iglesias@gmail.com>
2020-05-14 13:44:35 +02:00
Edgar E. Iglesias 2a4f26350c hw/net/xilinx_axienet: Handle fragmented packets from DMA
Add support for fragmented packets from the DMA.

Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <20200506082513.18751-7-edgar.iglesias@gmail.com>
2020-05-14 13:44:35 +02:00
Edgar E. Iglesias 51b19950ca hw/core: stream: Add an end-of-packet flag
Some stream clients stream an endless stream of data while
other clients stream data in packets. Stream interfaces
usually have a way to signal the end of a packet or the
last beat of a transfer.

This adds an end-of-packet flag to the push interface.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <20200506082513.18751-6-edgar.iglesias@gmail.com>
2020-05-14 13:44:35 +02:00
Edgar E. Iglesias e3a8926d0e hw/dma/xilinx_axidma: Add DMA memory-region property
Add DMA memory-region property to externally control what
address-space this DMA operates on.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200506082513.18751-5-edgar.iglesias@gmail.com>
2020-05-14 13:44:35 +02:00
Edgar E. Iglesias da59e178d7 hw/net/xilinx_axienet: Remove unncessary cast
Remove unncessary cast, buf is already uint8_t *.
No functional change.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200506082513.18751-4-edgar.iglesias@gmail.com>
2020-05-14 13:44:35 +02:00
Edgar E. Iglesias 0d9047c4d9 hw/net/xilinx_axienet: Cleanup stream->push assignment
Split the shared stream_class_init function to assign
stream->push with better type-safety.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200506082513.18751-3-edgar.iglesias@gmail.com>
2020-05-14 13:44:35 +02:00
Edgar E. Iglesias 3e2a0cb99d hw/net/xilinx_axienet: Auto-clear PHY Autoneg
Auto-clear PHY CR Autoneg bits. This makes this model
work with recent Linux kernels.

Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <20200506082513.18751-2-edgar.iglesias@gmail.com>
2020-05-14 13:44:35 +02:00
Peter Maydell 035b448b84 Changes:
- Christian Schoenebeck is now co-maintainer for 9pfs
 - relax checks for O_NOATIME
 - minor documentation updates
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Merge remote-tracking branch 'remotes/gkurz/tags/9p-next-2020-05-14' into staging

Changes:
- Christian Schoenebeck is now co-maintainer for 9pfs
- relax checks for O_NOATIME
- minor documentation updates

# gpg: Signature made Thu 14 May 2020 08:14:37 BST
# gpg:                using RSA key B4828BAF943140CEF2A3491071D4D5E5822F73D6
# gpg: Good signature from "Greg Kurz <groug@kaod.org>" [full]
# gpg:                 aka "Gregory Kurz <gregory.kurz@free.fr>" [full]
# gpg:                 aka "[jpeg image of size 3330]" [full]
# Primary key fingerprint: B482 8BAF 9431 40CE F2A3  4910 71D4 D5E5 822F 73D6

* remotes/gkurz/tags/9p-next-2020-05-14:
  xen-9pfs: Fix log messages of reply errors
  9pfs: local: ignore O_NOATIME if we don't have permissions
  qemu-options.hx: 9p: clarify -virtfs vs. -fsdev
  MAINTAINERS: Upgrade myself as 9pfs co-maintainer

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-14 10:58:30 +01:00
Christian Schoenebeck 9bbb7e0fe0 xen-9pfs: Fix log messages of reply errors
If delivery of some 9pfs response fails for some reason, log the
error message by mentioning the 9P protocol reply type, not by
client's request type. The latter could be misleading that the
error occurred already when handling the request input.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Message-Id: <ad0e5a9b6abde52502aa40b30661d29aebe1590a.1589132512.git.qemu_oss@crudebyte.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
2020-05-14 08:06:43 +02:00
Omar Sandoval a5804fcf7b 9pfs: local: ignore O_NOATIME if we don't have permissions
QEMU's local 9pfs server passes through O_NOATIME from the client. If
the QEMU process doesn't have permissions to use O_NOATIME (namely, it
does not own the file nor have the CAP_FOWNER capability), the open will
fail. This causes issues when from the client's point of view, it
believes it has permissions to use O_NOATIME (e.g., a process running as
root in the virtual machine). Additionally, overlayfs on Linux opens
files on the lower layer using O_NOATIME, so in this case a 9pfs mount
can't be used as a lower layer for overlayfs (cf.
dabfe19719/vmtest/onoatimehack.c
and https://github.com/NixOS/nixpkgs/issues/54509).

Luckily, O_NOATIME is effectively a hint, and is often ignored by, e.g.,
network filesystems. open(2) notes that O_NOATIME "may not be effective
on all filesystems. One example is NFS, where the server maintains the
access time." This means that we can honor it when possible but fall
back to ignoring it.

Acked-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Message-Id: <e9bee604e8df528584693a4ec474ded6295ce8ad.1587149256.git.osandov@fb.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
2020-05-14 08:06:43 +02:00
Christian Schoenebeck 65abaa01ee qemu-options.hx: 9p: clarify -virtfs vs. -fsdev
The docs are ambiguous about the difference (or actually their
equality) between options '-virtfs' vs. '-fsdev'. So clarify that
'-virtfs' is actually just a convenience shortcut for its
generalized form '-fsdev' in conjunction with '-device virtio-9p-pci'.

And as we're at it, also be a bit more descriptive what 9pfs is
actually used for.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <208f1fceffce2feaf7c900b29e326b967dce7762.1585661532.git.qemu_oss@crudebyte.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
2020-05-14 08:06:43 +02:00
Christian Schoenebeck 233982af53 MAINTAINERS: Upgrade myself as 9pfs co-maintainer
As suggested by Greg, let's upgrade myself as co-maintainer of 9pfs.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <E1jEYz4-0004pt-Cs@lizzy.crudebyte.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
2020-05-14 08:06:43 +02:00
Peter Maydell d8f9d57dbd Block patches:
- zstd compression for qcow2
 - Fix use-after-free
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Merge remote-tracking branch 'remotes/maxreitz/tags/pull-block-2020-05-13' into staging

Block patches:
- zstd compression for qcow2
- Fix use-after-free

# gpg: Signature made Wed 13 May 2020 15:14:06 BST
# gpg:                using RSA key 91BEB60A30DB3E8857D11829F407DB0061D5CF40
# gpg:                issuer "mreitz@redhat.com"
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>" [full]
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* remotes/maxreitz/tags/pull-block-2020-05-13:
  block/block-copy: fix use-after-free of task pointer
  iotests: 287: add qcow2 compression type test
  qcow2: add zstd cluster compression
  qcow2: rework the cluster compression routine
  qcow2: introduce compression type feature

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-13 15:35:32 +01:00
Vladimir Sementsov-Ogievskiy fc9aefc8c0 block/block-copy: fix use-after-free of task pointer
Obviously, we should g_free the task after trace point and offset
update.

Reported-by: Coverity (CID 1428756)
Fixes: 4ce5dd3e9b
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200507183800.22626-1-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2020-05-13 14:20:31 +02:00
Denis Plotnikov dd488fc1c0 iotests: 287: add qcow2 compression type test
The test checks fulfilling qcow2 requirements for the compression
type feature and zstd compression type operability.

Signed-off-by: Denis Plotnikov <dplotnikov@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Tested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200507082521.29210-5-dplotnikov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2020-05-13 14:20:31 +02:00
Denis Plotnikov d298ac10ad qcow2: add zstd cluster compression
zstd significantly reduces cluster compression time.
It provides better compression performance maintaining
the same level of the compression ratio in comparison with
zlib, which, at the moment, is the only compression
method available.

The performance test results:
Test compresses and decompresses qemu qcow2 image with just
installed rhel-7.6 guest.
Image cluster size: 64K. Image on disk size: 2.2G

The test was conducted with brd disk to reduce the influence
of disk subsystem to the test results.
The results is given in seconds.

compress cmd:
  time ./qemu-img convert -O qcow2 -c -o compression_type=[zlib|zstd]
                  src.img [zlib|zstd]_compressed.img
decompress cmd
  time ./qemu-img convert -O qcow2
                  [zlib|zstd]_compressed.img uncompressed.img

           compression               decompression
         zlib       zstd           zlib         zstd
------------------------------------------------------------
real     65.5       16.3 (-75 %)    1.9          1.6 (-16 %)
user     65.0       15.8            5.3          2.5
sys       3.3        0.2            2.0          2.0

Both ZLIB and ZSTD gave the same compression ratio: 1.57
compressed image size in both cases: 1.4G

Signed-off-by: Denis Plotnikov <dplotnikov@virtuozzo.com>
QAPI part:
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200507082521.29210-4-dplotnikov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2020-05-13 14:20:31 +02:00
Denis Plotnikov 25dd077d1d qcow2: rework the cluster compression routine
The patch enables processing the image compression type defined
for the image and chooses an appropriate method for image clusters
(de)compression.

Signed-off-by: Denis Plotnikov <dplotnikov@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200507082521.29210-3-dplotnikov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2020-05-13 14:20:31 +02:00
Denis Plotnikov 572ad9783f qcow2: introduce compression type feature
The patch adds some preparation parts for incompatible compression type
feature to qcow2 allowing the use different compression methods for
image clusters (de)compressing.

It is implied that the compression type is set on the image creation and
can be changed only later by image conversion, thus compression type
defines the only compression algorithm used for the image, and thus,
for all image clusters.

The goal of the feature is to add support of other compression methods
to qcow2. For example, ZSTD which is more effective on compression than ZLIB.

The default compression is ZLIB. Images created with ZLIB compression type
are backward compatible with older qemu versions.

Adding of the compression type breaks a number of tests because now the
compression type is reported on image creation and there are some changes
in the qcow2 header in size and offsets.

The tests are fixed in the following ways:
    * filter out compression_type for many tests
    * fix header size, feature table size and backing file offset
      affected tests: 031, 036, 061, 080
      header_size +=8: 1 byte compression type
                       7 bytes padding
      feature_table += 48: incompatible feature compression type
      backing_file_offset += 56 (8 + 48 -> header_change + feature_table_change)
    * add "compression type" for test output matching when it isn't filtered
      affected tests: 049, 060, 061, 065, 082, 085, 144, 182, 185, 198, 206,
                      242, 255, 274, 280

Signed-off-by: Denis Plotnikov <dplotnikov@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
QAPI part:
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200507082521.29210-2-dplotnikov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2020-05-13 14:20:31 +02:00
Peter Maydell d5c75ec500 Merge tpm 2020/05/08 v3
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Merge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2020-05-08-1' into staging

Merge tpm 2020/05/08 v3

# gpg: Signature made Tue 12 May 2020 16:50:34 BST
# gpg:                using RSA key B818B9CADF9089C2D5CEC66B75AD65802A0B4211
# gpg: Good signature from "Stefan Berger <stefanb@linux.vnet.ibm.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: B818 B9CA DF90 89C2 D5CE  C66B 75AD 6580 2A0B 4211

* remotes/stefanberger/tags/pull-tpm-2020-05-08-1:
  hw/tpm: fix usage of bool in tpm-tis.c

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-12 17:00:10 +01:00
Jafar Abdi aadad398e7 hw/tpm: fix usage of bool in tpm-tis.c
Clean up wrong usage of FALSE and TRUE in places that use "bool" from stdbool.h.

FALSE and TRUE (with capital letters) are the constants defined by glib for
being used with the "gboolean" type of glib. But some parts of the code also use
TRUE and FALSE for variables that are declared as "bool" (the type from <stdbool.h>).

Signed-off-by: Jafar Abdi <cafer.abdi@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
2020-05-12 11:47:24 -04:00