* [Bug 1904259] [NEW] include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686)
@ 2020-11-14 3:39 Ivan Serdyuk
2020-11-14 3:45 ` [Bug 1904259] " Ivan Serdyuk
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: Ivan Serdyuk @ 2020-11-14 3:39 UTC (permalink / raw)
To: qemu-devel
Public bug reported:
Hello.
I haven't found any "official" executables, for emulating RISC-V (32bit; 64bit) so I had to compile those myself.
I found that auto-generated build scripts, for Ninja, contained some
warnings interpreted as errors:
oceanfish81@gollvm:~/Desktop/qemu/build$ ninja -j 1
[2/1977] Compiling C object libqemuutil.a.p/util_qsp.c.o
FAILED: libqemuutil.a.p/util_qsp.c.o
clang-11 -Ilibqemuutil.a.p -I. -I.. -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/gio-unix-2.0/ -Xclang -fcolor-diagnostics -pipe -Wall -Winvalid-pch -Werror -std=gnu99 -O2 -g -m32 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-limit-compare -Wno-psabi -fstack-protector-strong -isystem /home/oceanfish81/Desktop/qemu/linux-headers -isystem linux-headers -iquote /home/oceanfish81/Desktop/qemu/tcg/i386 -iquote . -iquote /home/oceanfish81/Desktop/qemu -iquote /home/oceanfish81/Desktop/qemu/accel/tcg -iquote /home/oceanfish81/Desktop/qemu/include -iquote /home/oceanfish81/Desktop/qemu/disas/libvixl -pthread -Wno-unused-function -fPIC -MD -MQ libqemuutil.a.p/util_qsp.c.o -MF libqemuutil.a.p/util_qsp.c.o.d -o libqemuutil.a.p/util_qsp.c.o -c ../util/qsp.c
In file included from ../util/qsp.c:62:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/thread.h:4:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/processor.h:10:
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
qatomic_set__nocheck(ptr, val);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:138:5: note: expanded from macro 'qatomic_set__nocheck'
__atomic_store_n(ptr, i, __ATOMIC_RELAXED)
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:485:12: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
return qatomic_read__nocheck(ptr);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:129:5: note: expanded from macro 'qatomic_read__nocheck'
__atomic_load_n(ptr, __ATOMIC_RELAXED)
^
2 errors generated.
ninja: build stopped: subcommand failed.
** Affects: qemu
Importance: Undecided
Status: New
** Attachment added: "Attaching my build.ninja file, in case it would be of help"
https://bugs.launchpad.net/bugs/1904259/+attachment/5434234/+files/build.ninja
--
You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1904259
Title:
include/qemu/atomic.h:495:5: error: misaligned atomic operation may
incur significant performance penalty (Clang 11; Ubuntu 16 i686)
Status in QEMU:
New
Bug description:
Hello.
I haven't found any "official" executables, for emulating RISC-V (32bit; 64bit) so I had to compile those myself.
I found that auto-generated build scripts, for Ninja, contained some
warnings interpreted as errors:
oceanfish81@gollvm:~/Desktop/qemu/build$ ninja -j 1
[2/1977] Compiling C object libqemuutil.a.p/util_qsp.c.o
FAILED: libqemuutil.a.p/util_qsp.c.o
clang-11 -Ilibqemuutil.a.p -I. -I.. -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/gio-unix-2.0/ -Xclang -fcolor-diagnostics -pipe -Wall -Winvalid-pch -Werror -std=gnu99 -O2 -g -m32 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-limit-compare -Wno-psabi -fstack-protector-strong -isystem /home/oceanfish81/Desktop/qemu/linux-headers -isystem linux-headers -iquote /home/oceanfish81/Desktop/qemu/tcg/i386 -iquote . -iquote /home/oceanfish81/Desktop/qemu -iquote /home/oceanfish81/Desktop/qemu/accel/tcg -iquote /home/oceanfish81/Desktop/qemu/include -iquote /home/oceanfish81/Desktop/qemu/disas/libvixl -pthread -Wno-unused-function -fPIC -MD -MQ libqemuutil.a.p/util_qsp.c.o -MF libqemuutil.a.p/util_qsp.c.o.d -o libqemuutil.a.p/util_qsp.c.o -c ../util/qsp.c
In file included from ../util/qsp.c:62:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/thread.h:4:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/processor.h:10:
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
qatomic_set__nocheck(ptr, val);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:138:5: note: expanded from macro 'qatomic_set__nocheck'
__atomic_store_n(ptr, i, __ATOMIC_RELAXED)
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:485:12: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
return qatomic_read__nocheck(ptr);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:129:5: note: expanded from macro 'qatomic_read__nocheck'
__atomic_load_n(ptr, __ATOMIC_RELAXED)
^
2 errors generated.
ninja: build stopped: subcommand failed.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1904259/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug 1904259] Re: include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686)
2020-11-14 3:39 [Bug 1904259] [NEW] include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686) Ivan Serdyuk
@ 2020-11-14 3:45 ` Ivan Serdyuk
2020-11-14 3:52 ` Ivan Serdyuk
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Ivan Serdyuk @ 2020-11-14 3:45 UTC (permalink / raw)
To: qemu-devel
$ python3.7 ../meson/meson.py --version
0.55.3
$ clang-11 --version
Ubuntu clang version 11.0.0-++20200721055954+cebd637c886-1~exp1~20200721161335.13
Target: i686-pc-linux-gnu
Thread model: posix
$ ninja --version
1.10.0.git.kitware.jobserver-1
$ uname -a
Linux laptop 4.15.0-123-generic #126~16.04.1-Ubuntu SMP Wed Oct 21 13:51:51 UTC 2020 i686 i686 i686 GNU/Linux
--
You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1904259
Title:
include/qemu/atomic.h:495:5: error: misaligned atomic operation may
incur significant performance penalty (Clang 11; Ubuntu 16 i686)
Status in QEMU:
New
Bug description:
Hello.
I haven't found any "official" executables, for emulating RISC-V (32bit; 64bit) so I had to compile those myself.
I found that auto-generated build scripts, for Ninja, contained some
warnings interpreted as errors:
oceanfish81@gollvm:~/Desktop/qemu/build$ ninja -j 1
[2/1977] Compiling C object libqemuutil.a.p/util_qsp.c.o
FAILED: libqemuutil.a.p/util_qsp.c.o
clang-11 -Ilibqemuutil.a.p -I. -I.. -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/gio-unix-2.0/ -Xclang -fcolor-diagnostics -pipe -Wall -Winvalid-pch -Werror -std=gnu99 -O2 -g -m32 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-limit-compare -Wno-psabi -fstack-protector-strong -isystem /home/oceanfish81/Desktop/qemu/linux-headers -isystem linux-headers -iquote /home/oceanfish81/Desktop/qemu/tcg/i386 -iquote . -iquote /home/oceanfish81/Desktop/qemu -iquote /home/oceanfish81/Desktop/qemu/accel/tcg -iquote /home/oceanfish81/Desktop/qemu/include -iquote /home/oceanfish81/Desktop/qemu/disas/libvixl -pthread -Wno-unused-function -fPIC -MD -MQ libqemuutil.a.p/util_qsp.c.o -MF libqemuutil.a.p/util_qsp.c.o.d -o libqemuutil.a.p/util_qsp.c.o -c ../util/qsp.c
In file included from ../util/qsp.c:62:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/thread.h:4:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/processor.h:10:
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
qatomic_set__nocheck(ptr, val);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:138:5: note: expanded from macro 'qatomic_set__nocheck'
__atomic_store_n(ptr, i, __ATOMIC_RELAXED)
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:485:12: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
return qatomic_read__nocheck(ptr);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:129:5: note: expanded from macro 'qatomic_read__nocheck'
__atomic_load_n(ptr, __ATOMIC_RELAXED)
^
2 errors generated.
ninja: build stopped: subcommand failed.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1904259/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug 1904259] Re: include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686)
2020-11-14 3:39 [Bug 1904259] [NEW] include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686) Ivan Serdyuk
2020-11-14 3:45 ` [Bug 1904259] " Ivan Serdyuk
@ 2020-11-14 3:52 ` Ivan Serdyuk
2021-05-06 14:42 ` Thomas Huth
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Ivan Serdyuk @ 2020-11-14 3:52 UTC (permalink / raw)
To: qemu-devel
Solved by removing -Werror flag
** Also affects: ubuntu
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1904259
Title:
include/qemu/atomic.h:495:5: error: misaligned atomic operation may
incur significant performance penalty (Clang 11; Ubuntu 16 i686)
Status in QEMU:
New
Status in Ubuntu:
New
Bug description:
Hello.
I haven't found any "official" executables, for emulating RISC-V (32bit; 64bit) so I had to compile those myself.
I found that auto-generated build scripts, for Ninja, contained some
warnings interpreted as errors:
oceanfish81@gollvm:~/Desktop/qemu/build$ ninja -j 1
[2/1977] Compiling C object libqemuutil.a.p/util_qsp.c.o
FAILED: libqemuutil.a.p/util_qsp.c.o
clang-11 -Ilibqemuutil.a.p -I. -I.. -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/gio-unix-2.0/ -Xclang -fcolor-diagnostics -pipe -Wall -Winvalid-pch -Werror -std=gnu99 -O2 -g -m32 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-limit-compare -Wno-psabi -fstack-protector-strong -isystem /home/oceanfish81/Desktop/qemu/linux-headers -isystem linux-headers -iquote /home/oceanfish81/Desktop/qemu/tcg/i386 -iquote . -iquote /home/oceanfish81/Desktop/qemu -iquote /home/oceanfish81/Desktop/qemu/accel/tcg -iquote /home/oceanfish81/Desktop/qemu/include -iquote /home/oceanfish81/Desktop/qemu/disas/libvixl -pthread -Wno-unused-function -fPIC -MD -MQ libqemuutil.a.p/util_qsp.c.o -MF libqemuutil.a.p/util_qsp.c.o.d -o libqemuutil.a.p/util_qsp.c.o -c ../util/qsp.c
In file included from ../util/qsp.c:62:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/thread.h:4:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/processor.h:10:
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
qatomic_set__nocheck(ptr, val);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:138:5: note: expanded from macro 'qatomic_set__nocheck'
__atomic_store_n(ptr, i, __ATOMIC_RELAXED)
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:485:12: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
return qatomic_read__nocheck(ptr);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:129:5: note: expanded from macro 'qatomic_read__nocheck'
__atomic_load_n(ptr, __ATOMIC_RELAXED)
^
2 errors generated.
ninja: build stopped: subcommand failed.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1904259/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug 1904259] Re: include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686)
2020-11-14 3:39 [Bug 1904259] [NEW] include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686) Ivan Serdyuk
2020-11-14 3:45 ` [Bug 1904259] " Ivan Serdyuk
2020-11-14 3:52 ` Ivan Serdyuk
@ 2021-05-06 14:42 ` Thomas Huth
2021-07-06 4:17 ` Launchpad Bug Tracker
2021-07-06 4:17 ` Launchpad Bug Tracker
4 siblings, 0 replies; 6+ messages in thread
From: Thomas Huth @ 2021-05-06 14:42 UTC (permalink / raw)
To: qemu-devel
Do you still get the warning with the latest version of QEMU (v6.0)?
** Changed in: qemu
Status: New => Incomplete
** Changed in: ubuntu
Status: New => Incomplete
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1904259
Title:
include/qemu/atomic.h:495:5: error: misaligned atomic operation may
incur significant performance penalty (Clang 11; Ubuntu 16 i686)
Status in QEMU:
Incomplete
Status in Ubuntu:
Incomplete
Bug description:
Hello.
I haven't found any "official" executables, for emulating RISC-V (32bit; 64bit) so I had to compile those myself.
I found that auto-generated build scripts, for Ninja, contained some
warnings interpreted as errors:
oceanfish81@gollvm:~/Desktop/qemu/build$ ninja -j 1
[2/1977] Compiling C object libqemuutil.a.p/util_qsp.c.o
FAILED: libqemuutil.a.p/util_qsp.c.o
clang-11 -Ilibqemuutil.a.p -I. -I.. -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/gio-unix-2.0/ -Xclang -fcolor-diagnostics -pipe -Wall -Winvalid-pch -Werror -std=gnu99 -O2 -g -m32 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-limit-compare -Wno-psabi -fstack-protector-strong -isystem /home/oceanfish81/Desktop/qemu/linux-headers -isystem linux-headers -iquote /home/oceanfish81/Desktop/qemu/tcg/i386 -iquote . -iquote /home/oceanfish81/Desktop/qemu -iquote /home/oceanfish81/Desktop/qemu/accel/tcg -iquote /home/oceanfish81/Desktop/qemu/include -iquote /home/oceanfish81/Desktop/qemu/disas/libvixl -pthread -Wno-unused-function -fPIC -MD -MQ libqemuutil.a.p/util_qsp.c.o -MF libqemuutil.a.p/util_qsp.c.o.d -o libqemuutil.a.p/util_qsp.c.o -c ../util/qsp.c
In file included from ../util/qsp.c:62:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/thread.h:4:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/processor.h:10:
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
qatomic_set__nocheck(ptr, val);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:138:5: note: expanded from macro 'qatomic_set__nocheck'
__atomic_store_n(ptr, i, __ATOMIC_RELAXED)
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:485:12: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
return qatomic_read__nocheck(ptr);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:129:5: note: expanded from macro 'qatomic_read__nocheck'
__atomic_load_n(ptr, __ATOMIC_RELAXED)
^
2 errors generated.
ninja: build stopped: subcommand failed.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1904259/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug 1904259] Re: include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686)
2020-11-14 3:39 [Bug 1904259] [NEW] include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686) Ivan Serdyuk
` (2 preceding siblings ...)
2021-05-06 14:42 ` Thomas Huth
@ 2021-07-06 4:17 ` Launchpad Bug Tracker
2021-07-06 4:17 ` Launchpad Bug Tracker
4 siblings, 0 replies; 6+ messages in thread
From: Launchpad Bug Tracker @ 2021-07-06 4:17 UTC (permalink / raw)
To: qemu-devel
[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1904259
Title:
include/qemu/atomic.h:495:5: error: misaligned atomic operation may
incur significant performance penalty (Clang 11; Ubuntu 16 i686)
Status in QEMU:
Expired
Status in Ubuntu:
Expired
Bug description:
Hello.
I haven't found any "official" executables, for emulating RISC-V (32bit; 64bit) so I had to compile those myself.
I found that auto-generated build scripts, for Ninja, contained some
warnings interpreted as errors:
oceanfish81@gollvm:~/Desktop/qemu/build$ ninja -j 1
[2/1977] Compiling C object libqemuutil.a.p/util_qsp.c.o
FAILED: libqemuutil.a.p/util_qsp.c.o
clang-11 -Ilibqemuutil.a.p -I. -I.. -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/gio-unix-2.0/ -Xclang -fcolor-diagnostics -pipe -Wall -Winvalid-pch -Werror -std=gnu99 -O2 -g -m32 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-limit-compare -Wno-psabi -fstack-protector-strong -isystem /home/oceanfish81/Desktop/qemu/linux-headers -isystem linux-headers -iquote /home/oceanfish81/Desktop/qemu/tcg/i386 -iquote . -iquote /home/oceanfish81/Desktop/qemu -iquote /home/oceanfish81/Desktop/qemu/accel/tcg -iquote /home/oceanfish81/Desktop/qemu/include -iquote /home/oceanfish81/Desktop/qemu/disas/libvixl -pthread -Wno-unused-function -fPIC -MD -MQ libqemuutil.a.p/util_qsp.c.o -MF libqemuutil.a.p/util_qsp.c.o.d -o libqemuutil.a.p/util_qsp.c.o -c ../util/qsp.c
In file included from ../util/qsp.c:62:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/thread.h:4:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/processor.h:10:
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
qatomic_set__nocheck(ptr, val);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:138:5: note: expanded from macro 'qatomic_set__nocheck'
__atomic_store_n(ptr, i, __ATOMIC_RELAXED)
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:485:12: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
return qatomic_read__nocheck(ptr);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:129:5: note: expanded from macro 'qatomic_read__nocheck'
__atomic_load_n(ptr, __ATOMIC_RELAXED)
^
2 errors generated.
ninja: build stopped: subcommand failed.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1904259/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug 1904259] Re: include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686)
2020-11-14 3:39 [Bug 1904259] [NEW] include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686) Ivan Serdyuk
` (3 preceding siblings ...)
2021-07-06 4:17 ` Launchpad Bug Tracker
@ 2021-07-06 4:17 ` Launchpad Bug Tracker
4 siblings, 0 replies; 6+ messages in thread
From: Launchpad Bug Tracker @ 2021-07-06 4:17 UTC (permalink / raw)
To: qemu-devel
[Expired for Ubuntu because there has been no activity for 60 days.]
** Changed in: ubuntu
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1904259
Title:
include/qemu/atomic.h:495:5: error: misaligned atomic operation may
incur significant performance penalty (Clang 11; Ubuntu 16 i686)
Status in QEMU:
Expired
Status in Ubuntu:
Expired
Bug description:
Hello.
I haven't found any "official" executables, for emulating RISC-V (32bit; 64bit) so I had to compile those myself.
I found that auto-generated build scripts, for Ninja, contained some
warnings interpreted as errors:
oceanfish81@gollvm:~/Desktop/qemu/build$ ninja -j 1
[2/1977] Compiling C object libqemuutil.a.p/util_qsp.c.o
FAILED: libqemuutil.a.p/util_qsp.c.o
clang-11 -Ilibqemuutil.a.p -I. -I.. -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/gio-unix-2.0/ -Xclang -fcolor-diagnostics -pipe -Wall -Winvalid-pch -Werror -std=gnu99 -O2 -g -m32 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-string-plus-int -Wno-typedef-redefinition -Wno-tautological-type-limit-compare -Wno-psabi -fstack-protector-strong -isystem /home/oceanfish81/Desktop/qemu/linux-headers -isystem linux-headers -iquote /home/oceanfish81/Desktop/qemu/tcg/i386 -iquote . -iquote /home/oceanfish81/Desktop/qemu -iquote /home/oceanfish81/Desktop/qemu/accel/tcg -iquote /home/oceanfish81/Desktop/qemu/include -iquote /home/oceanfish81/Desktop/qemu/disas/libvixl -pthread -Wno-unused-function -fPIC -MD -MQ libqemuutil.a.p/util_qsp.c.o -MF libqemuutil.a.p/util_qsp.c.o.d -o libqemuutil.a.p/util_qsp.c.o -c ../util/qsp.c
In file included from ../util/qsp.c:62:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/thread.h:4:
In file included from /home/oceanfish81/Desktop/qemu/include/qemu/processor.h:10:
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
qatomic_set__nocheck(ptr, val);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:138:5: note: expanded from macro 'qatomic_set__nocheck'
__atomic_store_n(ptr, i, __ATOMIC_RELAXED)
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:485:12: error: misaligned atomic operation may incur significant performance penalty [-Werror,-Watomic-alignment]
return qatomic_read__nocheck(ptr);
^
/home/oceanfish81/Desktop/qemu/include/qemu/atomic.h:129:5: note: expanded from macro 'qatomic_read__nocheck'
__atomic_load_n(ptr, __ATOMIC_RELAXED)
^
2 errors generated.
ninja: build stopped: subcommand failed.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1904259/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-07-06 4:27 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-11-14 3:39 [Bug 1904259] [NEW] include/qemu/atomic.h:495:5: error: misaligned atomic operation may incur significant performance penalty (Clang 11; Ubuntu 16 i686) Ivan Serdyuk
2020-11-14 3:45 ` [Bug 1904259] " Ivan Serdyuk
2020-11-14 3:52 ` Ivan Serdyuk
2021-05-06 14:42 ` Thomas Huth
2021-07-06 4:17 ` Launchpad Bug Tracker
2021-07-06 4:17 ` Launchpad Bug Tracker
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