Move all of the TranslationBlock flushing and page linking
code from translate-all.c to tb-maint.c.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These items printf, and could be replaced with proper
tracepoints if we really cared.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Use a constant target data allocation size for all pages.
This will be necessary to reduce overhead of page tracking.
Since TARGET_PAGE_DATA_SIZE is now required, we can use this
to omit data tracking for targets that don't require it.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Use qatomic_*, which expands to __atomic_* in preference
to the "legacy" __sync_* functions.
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Change from QEMU_BUILD_BUG_ON, which requires ifdefs to avoid
problematic code, to qemu_build_assert, which can use C ifs.
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This differs from assert, in that with optimization enabled it
triggers at build-time. It differs from QEMU_BUILD_BUG_ON,
aka _Static_assert, in that it is sensitive to control flow
and is subject to dead-code elimination.
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Profiling QEMU during Fedora 35 for PPC64 boot revealed that a
considerable amount of time was being spent in
check_for_breakpoints() (0.61% of total time on PPC64 and 2.19% on
amd64), even though it was just checking that its queue was empty
and returning, when no breakpoints were set. It turns out this
function is not inlined by the compiler and it's always called by
helper_lookup_tb_ptr(), one of the most called functions.
By leaving only the check for empty queue in
check_for_breakpoints() and moving the remaining code to
check_for_breakpoints_slow(), called only when the queue is not
empty, it's possible to avoid the call overhead. An improvement of
about 3% in total time was measured on POWER9.
Signed-off-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221025202424.195984-2-leandro.lupori@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
AArch64 defines the TCG_TARGET_HAS_direct_jump. So the "else" block is
useless in the case of "INDEX_op_goto_tb" in function "tcg_out_op". Add
an assertion and delete these codes for clarity.
Suggested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Qi Hu <huqi@loongson.cn>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221017020826.990729-1-huqi@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Similar to the ARM64, LoongArch has PC-relative instructions such as
PCADDU18I. These instructions can be used to support direct jump for
LoongArch. Additionally, if instruction "B offset" can cover the target
address(target is within ±128MB range), a single "B offset" plus a nop
will be used by "tb_target_set_jump_target".
Signed-off-by: Qi Hu <huqi@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Message-Id: <20221015092754.91971-1-huqi@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Commit a82fd5a4ec was intended to be a code cleanup, but
unfortunately it has a bug. It moves the initialization of the
TCG cflags from the "start a new vcpu" function to the
thread handler; this is fine when each vcpu has its own thread,
but when we are doing round-robin of vcpus on a single thread
we end up only initializing the cflags for CPU 0, not for any
of the others.
The most obvious effect of this bug is that running in icount
mode with more than one CPU is broken; typically the guest
hangs shortly after it brings up the secondary CPUs.
This reverts commit a82fd5a4ec.
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20221021163409.3674911-1-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
When the emulation stops with a hard exception it's very useful for
debugging purposes to dump the current guest memory layout (for an
example see /proc/self/maps) beside the CPU registers.
The open_self_maps() function provides such a memory dump, but since
it's located in the syscall.c file, various changes (add #includes, make
this function externally visible, ...) are needed to be able to call it
from the existing EXCP_DUMP() macro.
This patch takes another approach by re-defining EXCP_DUMP() to call
target_exception_dump(), which is in syscall.c, consolidates the log
print functions and allows to add the call to dump the memory layout.
Beside a reduced code footprint, this approach keeps the changes across
the various callers minimal, and keeps EXCP_DUMP() highlighted as
important macro/function.
Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <Y1bzAWbw07WBKPxw@p100>
[lv: remove pc declaration and setting]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Add hooks which architectures can use to add arbitrary data to custom
sections.
Also add a section name string table in order to identify section
contents
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017113210.41674-1-frankja@linux.ibm.com>
section_offset will later be used to store the offset to the section
data which will be stored last. For now memory_offset is only needed
to make section_offset look nicer.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017083822.43118-5-frankja@linux.ibm.com>
Let's move ELF related members into one block and guest memory related
ones into another to improve readability.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017083822.43118-4-frankja@linux.ibm.com>
Let's start bundling the writes of the headers and of the data so we
have a clear ordering between them. Since the ELF header uses offsets
to the headers we can freely order them.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017083822.43118-3-frankja@linux.ibm.com>
Currently we're writing the NULL section header if we overflow the
physical header number in the ELF header. But in the future we'll add
custom section headers AND section data.
To facilitate this we need to rearange section handling a bit. As with
the other ELF headers we split the code into a prepare and a write
step.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017083822.43118-2-frankja@linux.ibm.com>
* Highlight of this PR is Linus Heckemann's GHashTable patch which
brings massive general performance improvements of 9p server
somewhere between factor 6 .. 12.
* Bin Meng's g_mkdir patch is a preparatory patch for upcoming
Windows host support of 9p server.
* The rest of the patches in this PR are 9p test code restructuring
and refactoring changes to improve readability and to ease
maintenance of 9p test code on the long-term.
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Merge tag 'pull-9p-20221024' of https://github.com/cschoenebeck/qemu into staging
9pfs: performance, Windows host prep, tests restructure
* Highlight of this PR is Linus Heckemann's GHashTable patch which
brings massive general performance improvements of 9p server
somewhere between factor 6 .. 12.
* Bin Meng's g_mkdir patch is a preparatory patch for upcoming
Windows host support of 9p server.
* The rest of the patches in this PR are 9p test code restructuring
and refactoring changes to improve readability and to ease
maintenance of 9p test code on the long-term.
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# gpg: Signature made Mon 24 Oct 2022 06:54:07 EDT
# gpg: using RSA key 96D8D110CF7AF8084F88590134C2B58765A47395
# gpg: issuer "qemu_oss@crudebyte.com"
# gpg: Good signature from "Christian Schoenebeck <qemu_oss@crudebyte.com>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: ECAB 1A45 4014 1413 BA38 4926 30DB 47C3 A012 D5F4
# Subkey fingerprint: 96D8 D110 CF7A F808 4F88 5901 34C2 B587 65A4 7395
* tag 'pull-9p-20221024' of https://github.com/cschoenebeck/qemu: (23 commits)
tests/9p: remove unnecessary g_strdup() calls
tests/9p: merge v9fs_tunlinkat() and do_unlinkat()
tests/9p: merge v9fs_tlink() and do_hardlink()
tests/9p: merge v9fs_tsymlink() and do_symlink()
tests/9p: merge v9fs_tlcreate() and do_lcreate()
tests/9p: merge v9fs_tmkdir() and do_mkdir()
tests/9p: convert v9fs_tflush() to declarative arguments
tests/9p: simplify callers of twrite()
tests/9p: convert v9fs_twrite() to declarative arguments
tests/9p: simplify callers of tlopen()
tests/9p: convert v9fs_tlopen() to declarative arguments
tests/9p: simplify callers of treaddir()
tests/9p: convert v9fs_treaddir() to declarative arguments
tests/9p: simplify callers of tgetattr()
tests/9p: convert v9fs_tgetattr() to declarative arguments
tests/9p: simplify callers of tattach()
tests/9p: merge v9fs_tattach(), do_attach(), do_attach_rqid()
tests/9p: merge v9fs_tversion() and do_version()
tests/9p: simplify callers of twalk()
tests/9p: merge *walk*() functions
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Commit 8f9abdf586 ("chardev: src buffer const for write functions")
changed the type of the second parameter of qemu_chr_be_write()
from uint8_t * to const uint8_t *. Remove the now useless type
casts from qemu_chr_be_write() function calls in ui/console.c and
ui/gtk.c.
Cc: qemu-trivial@nongnu.org
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Message-Id: <20221022141204.29358-1-vr_qemu@t-online.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This is a leftover from before the recent function merge and
refactoring patches:
As these functions do not return control to the caller in
between, it is not necessary to duplicate strings passed to them.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <0f80141cde3904ed0591354059da49d1d60bcdbc.1664917004.git.qemu_oss@crudebyte.com>
As with previous patches, unify those 2 functions into a single function
v9fs_tunlinkat() by using a declarative function arguments approach.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <1dea593edd464908d92501933c068388c01f1744.1664917004.git.qemu_oss@crudebyte.com>
As with previous patches, unify those 2 functions into a single function
v9fs_tlink() by using a declarative function arguments approach.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <cb4d42203e1e4e6027df4924bbe4bdbc002f668b.1664917004.git.qemu_oss@crudebyte.com>
As with previous patches, unify those 2 functions into a single function
v9fs_tsymlink() by using a declarative function arguments approach.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <563f3ad04fe596ce0ae1e2654d1d08237f18c830.1664917004.git.qemu_oss@crudebyte.com>
As with previous patches, unify those 2 functions into a single function
v9fs_tlcreate() by using a declarative function arguments approach.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <4c01b2caa5f5b54a2020fc92701deadd2abf0571.1664917004.git.qemu_oss@crudebyte.com>
As with previous patches, unify those 2 functions into a single function
v9fs_tmkdir() by using a declarative function arguments approach.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <b87b2c972921df980440ff5b2d3e6bb8163d6551.1664917004.git.qemu_oss@crudebyte.com>
Use declarative function arguments for function v9fs_tflush().
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <91b7b154298c500d100b05137146c2905c3acdec.1664917004.git.qemu_oss@crudebyte.com>
Now as twrite() is using a declarative approach, simplify the
code of callers of this function.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <7f280ec6a1f9d8afed46567a796562c4dc28afa9.1664917004.git.qemu_oss@crudebyte.com>
Use declarative function arguments for function v9fs_twrite().
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <be0326e2d9ab66f68c06b1766ddf103849d570b4.1664917004.git.qemu_oss@crudebyte.com>
Now as tlopen() is using a declarative approach, simplify the
code of callers of this function.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <f74b6153e079fc7a340e5cb575ee32e0fe1e0ae6.1664917004.git.qemu_oss@crudebyte.com>
Use declarative function arguments for function v9fs_tlopen().
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <765ab515353c56f88f0a163631f626a44e9565d6.1664917004.git.qemu_oss@crudebyte.com>
Now as treaddir() is using a declarative approach, simplify the
code of callers of this function.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <7cec6f2c7011a481806c34908893b7282702a7a6.1664917004.git.qemu_oss@crudebyte.com>
Use declarative function arguments for function v9fs_treaddir().
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <a66aae4ceb19ec12d245b8c7f33a639584c8e272.1664917004.git.qemu_oss@crudebyte.com>
Now as tgetattr() is using a declarative approach, simplify the
code of callers of this function.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <60c6a083f320b86f3172951445df7bbc895932e2.1664917004.git.qemu_oss@crudebyte.com>
Use declarative function arguments for function v9fs_tgetattr().
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <d340a91be96fbfecfb8dacdd7558223b3c0d0e2c.1664917004.git.qemu_oss@crudebyte.com>
Now as tattach() is using a declarative approach, simplify the
code of callers of this function.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <9b50e5b89a0072e84a9191d18c19a53546a28bba.1664917004.git.qemu_oss@crudebyte.com>
As with previous patches, unify those 3 functions into a single function
v9fs_tattach() by using a declarative function arguments approach.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <a6756b30bf2a1b25729c5bbabd1c9534a8f20d6f.1664917004.git.qemu_oss@crudebyte.com>
As with previous patches, unify functions v9fs_tversion() and do_version()
into a single function v9fs_tversion() by using a declarative function
arguments approach.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <2d253491aaffd267ec295f056dda47456692cd0c.1664917004.git.qemu_oss@crudebyte.com>
Now as twalk() is using a declarative approach, simplify the
code of callers of this function.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <8b9d3c656ad43b6c953d6bdacd8d9f4c8e599b2a.1664917004.git.qemu_oss@crudebyte.com>
Introduce declarative function calls.
There are currently 4 different functions for sending a 9p 'Twalk'
request: v9fs_twalk(), do_walk(), do_walk_rqids() and
do_walk_expect_error(). They are all doing the same thing, just in a
slightly different way and with slightly different function arguments.
Merge those 4 functions into a single function by using a struct for
function call arguments and use designated initializers when calling
this function to turn usage into a declarative approach, which is
better readable and easier to maintain.
Also move private functions genfid(), split() and split_free() from
virtio-9p-test.c to virtio-9p-client.c.
Based-on: <E1odrya-0004Fv-97@lizzy.crudebyte.com>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <607969dbfbc63c1be008df9131133711b046e979.1664917004.git.qemu_oss@crudebyte.com>
The previous implementation would iterate over the fid table for
lookup operations, resulting in an operation with O(n) complexity on
the number of open files and poor cache locality -- for every open,
stat, read, write, etc operation.
This change uses a hashtable for this instead, significantly improving
the performance of the 9p filesystem. The runtime of NixOS's simple
installer test, which copies ~122k files totalling ~1.8GiB from 9p,
decreased by a factor of about 10.
Signed-off-by: Linus Heckemann <git@sphalerite.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
[CS: - Retain BUG_ON(f->clunked) in get_fid().
- Add TODO comment in clunk_fid(). ]
Message-Id: <20221004104121.713689-1-git@sphalerite.org>
[CS: - Drop unnecessary goto and out: label. ]
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
This patch is pure refactoring, it does not change behaviour.
virtio-9p-test.c grew to 1657 lines. Let's split this file up between
actual 9p test cases vs. 9p test client, to make it easier to
concentrate on the actual 9p tests.
Move the 9p test client code to a new unit virtio-9p-client.c, which
are basically all functions and types prefixed with v9fs_* already.
Note that some client wrapper functions (do_*) are preserved in
virtio-9p-test.c, simply because these wrapper functions are going to
be wiped with subsequent patches anyway.
As the global QGuestAllocator variable is moved to virtio-9p-client.c,
add a new function v9fs_set_allocator() to be used by virtio-9p-test.c
instead of fiddling with a global variable across units and libraries.
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <E1odrya-0004Fv-97@lizzy.crudebyte.com>
Use g_mkdir() to create a directory on all platforms.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <20220927110632.1973965-27-bmeng.cn@gmail.com>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
A mx25l25635f chip model is generally found on these machines. It's
newer and uses 4B opcodes which is better to exercise the support in
the Linux kernel.
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Message-Id: <20220722063602.128144-9-clg@kaod.org>
Message-Id: <20221013161241.2805140-11-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Generated from hardware using the following command and then padding
with 0xff to fill out a power-of-2:
hexdump -v -e '8/1 "0x%02x, " "\n"' sfdp`
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
[ clg: removed extern ]
Message-Id: <20221006224424.3556372-1-patrick@stwcx.xyz>
Message-Id: <20221013161241.2805140-10-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
