Note that PSW_ADDR_{64,32} are called PSW_MASK_{EA,BA}
in the kernel source.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-11-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The "save" routines copied from the kernel, which are currently
commented out, are unnecessary in qemu. We can copy from env
where the kernel needs special instructions. Fix comment style.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-9-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Using the host address of &frame->sregs is incorrect.
We need the guest address.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Directly reading sc->regs.psw.addr misses the bswap
that may be performed by __get_user.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The function cannot fail.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This is an unnecessary complication since we only
support 64-bit mode.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Using the right type simplifies the frame setup.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Noticed via gitlab clang-user job:
TEST signals on s390x
../linux-user/s390x/signal.c:258:9: runtime error: \
1.84467e+19 is outside the range of representable values of \
type 'unsigned long'
Which points to the fact that we were performing a double-to-uint64_t
conversion while storing the fp registers, instead of just copying
the data across.
Turns out there are several errors:
target_ulong is the size of the target register, whereas abi_ulong
is the target 'unsigned long' type. Not a big deal here, since we
only support 64-bit s390x, but not correct either.
In target_sigcontext and target ucontext, we used a host pointer
instead of a target pointer, aka abi_ulong.
Fixing this allows the removal of a cast to __put_user.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
It passes now that we support signals properly.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-26-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The shape of the kernel's __siginfo_fpu_t is dependent on
the cpu type, not the abi. Which is weird, but there ya go.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-23-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Check that the input sp is 16 byte aligned, not 4.
Do that before the lock_user_struct check.
Validate the saved sp is 8 byte aligned.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-22-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Clean up a goto label with a single use. Remove #if 0.
Remove useless parentheses. Fold constants into __put_user.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-21-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Stub it out to zero, but at least include it.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-20-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Replace __siginfo_t with target_pt_regs, and move si_mask
into target_signal_frame directly.
Extract save/restore functions for target_pt_regs. Adjust
for sparc64 tstate. Use proper get/put functions for psr.
Turns out we were already writing to si_mask twice, so no
need to handle that in the new functions.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-16-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Move target_reg_window up and use it. Fold structptr and xxargs
into xargs -- the use of a host pointer was incorrect anyway.
Rename the structure to target_stackf for consistency.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-15-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
All of the source and header files already defer to sparc
via #include. The syscall.tbl and syscallhdr.sh files
could not do the same, but are identical.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-12-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
There are only a few differences in sparc32 vs sparc64.
This fixes target_shmlba for sparc32plus, which is v9.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-8-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Share code between sparc32 and sparc64, removing a bit of pointless
difference wrt psr/tstate. Use sizeof(abi_ulong) for allocating
initial register window. Use TARGET_STACK_BIAS.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Move TARGET_STACK_BIAS from signal.c. Generic code cares about the
logical stack pointer, not the physical one that has a bias applied
for sparc64.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
In most cases we were already passing get_sp_from_cpustate
directly to the function. In other cases, we were passing
a local variable which already contained the same value.
In the rest of the cases, we were passing the stack pointer
out of env directly.
Reviewed by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Now that we have exactly one call, it's easy to pass
in env instead of passing in the sp value.
Use target_save_altstack, which required env.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Note that target_restore_altstack uses the host memory
pointer that we have already verified, so TARGET_EFAULT
is not a possible return value.
Note that using -EFAULT was a bug.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Create a function to match target_save_altstack.
Fix some style and unlock issues in do_sigaltstack.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Some target are using llseek instead of _llseek like riscv,
nios2, hexagon, and openrisc.
Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210512101358.122781-1-kito.cheng@sifive.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use bit masking instead of an if tree.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210423165413.338259-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
There is no such decoding in linux/arch/arm/nwfpe/fpmodule.c.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210423165413.338259-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Pull out the fpa11 emulation to a helper function.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210423165413.338259-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Syscall unshare did not have custom print function for strace, but it's argument is same as flags in clone syscall, so it can be easily implemented.
Also updated missing flags from clone_flags.
Signed-off-by: Matus Kysel <mkysel@tachyum.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210406144203.1020598-1-mkysel@tachyum.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
We can not use watchpoints in user-mode emulation because we
need the softmmu slow path to detect accesses to watchpointed
memory. This code is expanded as empty stub in "hw/core/cpu.h"
anyway, so we can drop it.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210303214708.1727801-18-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This patch set adds a bus multiplexer and the necessary infrastructure
in the I2C code to allow it to work.
These are common on systems with lots of I2C devices, like an IPMI BMC.
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Merge remote-tracking branch 'remotes/cminyard/tags/for-qemu-6.1-v1' into staging
Add a bus multiplexer device
This patch set adds a bus multiplexer and the necessary infrastructure
in the I2C code to allow it to work.
These are common on systems with lots of I2C devices, like an IPMI BMC.
# gpg: Signature made Thu 13 May 2021 22:48:07 BST
# gpg: using RSA key FD0D5CE67CE0F59A6688268661F38C90919BFF81
# gpg: Good signature from "Corey Minyard <cminyard@mvista.com>" [unknown]
# gpg: aka "Corey Minyard <minyard@acm.org>" [unknown]
# gpg: aka "Corey Minyard <corey@minyard.net>" [unknown]
# gpg: aka "Corey Minyard <minyard@mvista.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: FD0D 5CE6 7CE0 F59A 6688 2686 61F3 8C90 919B FF81
* remotes/cminyard/tags/for-qemu-6.1-v1:
hw/i2c: add pca954x i2c-mux switch
hw/i2c: move search to i2c_scan_bus method
hw/i2c: add match method for device search
hw/i2c: name I2CNode list in I2CBus
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The default "alabaster" sphinx theme has a couple shortcomings:
- the navbar moves along the page
- the search bar is not always at the same place
- it lacks some contrast and colours
The "rtd" theme from readthedocs.org is a popular third party theme used
notably by the kernel, with a custom style sheet. I like it better,
perhaps others do too. It also simplifies the "Edit on Gitlab" links.
Tweak a bit the custom theme to match qemu.org style, use the
QEMU logo, and favicon etc.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Message-Id: <20210323115328.4146052-1-marcandre.lureau@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Fix of the 2021-05-11 version, with a fix to build on the armhf
cross.
The largest change in this set is David's changes for ram block size
changing; then there's a pile of other cleanups and fixes.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20210513a' into staging
Migration pull 2021-05-13
Fix of the 2021-05-11 version, with a fix to build on the armhf
cross.
The largest change in this set is David's changes for ram block size
changing; then there's a pile of other cleanups and fixes.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
# gpg: Signature made Thu 13 May 2021 18:36:06 BST
# gpg: using RSA key 45F5C71B4A0CB7FB977A9FA90516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" [full]
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7
* remotes/dgilbert/tags/pull-migration-20210513a:
tests/migration: introduce multifd into guestperf
tests/qtest/migration-test: Use g_autofree to avoid leaks on error paths
tests/migration-test: Fix "true" vs true
migration/ram: Use offset_in_ramblock() in range checks
migration/multifd: Print used_length of memory block
migration/ram: Handle RAM block resizes during postcopy
migration/ram: Simplify host page handling in ram_load_postcopy()
migration/ram: Discard RAM when growing RAM blocks after ram_postcopy_incoming_init()
exec: Relax range check in ram_block_discard_range()
migration/ram: Handle RAM block resizes during precopy
numa: Make all callbacks of ram block notifiers optional
numa: Teach ram block notifiers about resizeable ram blocks
util: vfio-helpers: Factor out and fix processing of existing ram blocks
migration: Drop redundant query-migrate result @blocked
migration/ram: Optimize ram_save_host_page()
migration/ram: Reduce unnecessary rate limiting
migrate/ram: remove "ram_bulk_stage" and "fpo_enabled"
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Guestperf tool does not cover the multifd-enabled migration
currently, it is worth supporting so that developers can
analysis the migration performance with all kinds of
migration.
To request that multifd is enabled, with 4 channels:
$ ./tests/migration/guestperf.py \
--multifd --multifd-channels 4 --output output.json
To run the entire standardized set of multifd-enabled
comparisons, with unix migration:
$ ./tests/migration/guestperf-batch.py \
--dst-host localhost --transport unix \
--filter compr-multifd* --output outputdir
Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Message-Id: <cfeeb04d17ad932c42a9871294058b77429ad1b7.1616171924.git.huangy81@chinatelecom.cn>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Coverity notices that several places in the migration-test code fail
to free memory in error-exit paths. This is pretty unimportant in
test case code, but we can avoid having to manually free the memory
entirely by using g_autofree.
The places where Coverity spotted a leak were relating to early exits
not freeing 'uri' in test_precopy_unix(), do_test_validate_uuid(),
migrate_postcopy_prepare() and test_migrate_auto_converge(). This
patch converts all the string-allocation in the test code to
g_autofree for consistency.
Fixes: Coverity CID 1432313, 1432315, 1432352, 1432364
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210506185819.9010-1-peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Accidental use of "true" as a boolean; spotted by coverity
and Peter.
Fixes: b99784ef6c
Fixes: d795f47466
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Reported-by: Coverity (CID 1432373, 1432292, 1432288)
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20210504100545.112213-1-dgilbert@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
