* [intel-tdx:kvm-upstream-workaround 435/440] include/linux/kvm_host.h:429:9: error: implicit declaration of function 'perf_event_guest_enter_exit'
@ 2023-02-27 11:06 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2023-02-27 11:06 UTC (permalink / raw)
To: Isaku Yamahata; +Cc: oe-kbuild-all
tree: https://github.com/intel/tdx.git kvm-upstream-workaround
head: 6960696b1b5b8d8074bf2724321ff73782e42e6c
commit: b7377b41927c4fa035228a4eb3fb6151d64bf749 [435/440] perf, KVM: introduce software event on enter/exit to/from guest
config: s390-defconfig (https://download.01.org/0day-ci/archive/20230227/202302271833.4v9WbSB7-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel/tdx/commit/b7377b41927c4fa035228a4eb3fb6151d64bf749
git remote add intel-tdx https://github.com/intel/tdx.git
git fetch --no-tags intel-tdx kvm-upstream-workaround
git checkout b7377b41927c4fa035228a4eb3fb6151d64bf749
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 prepare
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302271833.4v9WbSB7-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/s390/kernel/asm-offsets.c:11:
include/linux/kvm_host.h: In function 'guest_context_enter_irqoff':
>> include/linux/kvm_host.h:429:9: error: implicit declaration of function 'perf_event_guest_enter_exit' [-Werror=implicit-function-declaration]
429 | perf_event_guest_enter_exit(true);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:114: arch/s390/kernel/asm-offsets.s] Error 1
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:1298: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:242: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +/perf_event_guest_enter_exit +429 include/linux/kvm_host.h
418
419 /*
420 * Enter guest context and enter an RCU extended quiescent state.
421 *
422 * Between guest_context_enter_irqoff() and guest_context_exit_irqoff() it is
423 * unsafe to use any code which may directly or indirectly use RCU, tracing
424 * (including IRQ flag tracing), or lockdep. All code in this period must be
425 * non-instrumentable.
426 */
427 static __always_inline void guest_context_enter_irqoff(void)
428 {
> 429 perf_event_guest_enter_exit(true);
430 /*
431 * KVM does not hold any references to rcu protected data when it
432 * switches CPU into a guest mode. In fact switching to a guest mode
433 * is very similar to exiting to userspace from rcu point of view. In
434 * addition CPU may stay in a guest mode for quite a long time (up to
435 * one time slice). Lets treat guest mode as quiescent state, just like
436 * we do with user-mode execution.
437 */
438 if (!context_tracking_guest_enter()) {
439 instrumentation_begin();
440 rcu_virt_note_context_switch();
441 instrumentation_end();
442 }
443 }
444
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
^ permalink raw reply [flat|nested] 2+ messages in thread
* [intel-tdx:kvm-upstream-workaround 435/440] include/linux/kvm_host.h:429:9: error: implicit declaration of function 'perf_event_guest_enter_exit'
@ 2023-03-01 1:48 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2023-03-01 1:48 UTC (permalink / raw)
To: Isaku Yamahata; +Cc: oe-kbuild-all
tree: https://github.com/intel/tdx.git kvm-upstream-workaround
head: 25e27d15be5f548279167332c188b71c12dcbc16
commit: 0ea2d2b6d40746cf86286944a3e2852c4b86a360 [435/440] perf, KVM: introduce software event on enter/exit to/from guest
config: mips-randconfig-r015-20230226 (https://download.01.org/0day-ci/archive/20230301/202303010928.pHvmvPop-lkp@intel.com/config)
compiler: mips64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel/tdx/commit/0ea2d2b6d40746cf86286944a3e2852c4b86a360
git remote add intel-tdx https://github.com/intel/tdx.git
git fetch --no-tags intel-tdx kvm-upstream-workaround
git checkout 0ea2d2b6d40746cf86286944a3e2852c4b86a360
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips prepare
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303010928.pHvmvPop-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/mips/kernel/asm-offsets.c:24:
include/linux/kvm_host.h: In function 'guest_context_enter_irqoff':
>> include/linux/kvm_host.h:429:9: error: implicit declaration of function 'perf_event_guest_enter_exit' [-Werror=implicit-function-declaration]
429 | perf_event_guest_enter_exit(true);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/mips/kernel/asm-offsets.c: At top level:
arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for 'output_ptreg_defines' [-Wmissing-prototypes]
26 | void output_ptreg_defines(void)
| ^~~~~~~~~~~~~~~~~~~~
arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for 'output_task_defines' [-Wmissing-prototypes]
78 | void output_task_defines(void)
| ^~~~~~~~~~~~~~~~~~~
arch/mips/kernel/asm-offsets.c:92:6: warning: no previous prototype for 'output_thread_info_defines' [-Wmissing-prototypes]
92 | void output_thread_info_defines(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/mips/kernel/asm-offsets.c:108:6: warning: no previous prototype for 'output_thread_defines' [-Wmissing-prototypes]
108 | void output_thread_defines(void)
| ^~~~~~~~~~~~~~~~~~~~~
arch/mips/kernel/asm-offsets.c:179:6: warning: no previous prototype for 'output_mm_defines' [-Wmissing-prototypes]
179 | void output_mm_defines(void)
| ^~~~~~~~~~~~~~~~~
arch/mips/kernel/asm-offsets.c:235:6: warning: no previous prototype for 'output_sc_defines' [-Wmissing-prototypes]
235 | void output_sc_defines(void)
| ^~~~~~~~~~~~~~~~~
arch/mips/kernel/asm-offsets.c:248:6: warning: no previous prototype for 'output_signal_defined' [-Wmissing-prototypes]
248 | void output_signal_defined(void)
| ^~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:114: arch/mips/kernel/asm-offsets.s] Error 1
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:1298: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:242: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +/perf_event_guest_enter_exit +429 include/linux/kvm_host.h
418
419 /*
420 * Enter guest context and enter an RCU extended quiescent state.
421 *
422 * Between guest_context_enter_irqoff() and guest_context_exit_irqoff() it is
423 * unsafe to use any code which may directly or indirectly use RCU, tracing
424 * (including IRQ flag tracing), or lockdep. All code in this period must be
425 * non-instrumentable.
426 */
427 static __always_inline void guest_context_enter_irqoff(void)
428 {
> 429 perf_event_guest_enter_exit(true);
430 /*
431 * KVM does not hold any references to rcu protected data when it
432 * switches CPU into a guest mode. In fact switching to a guest mode
433 * is very similar to exiting to userspace from rcu point of view. In
434 * addition CPU may stay in a guest mode for quite a long time (up to
435 * one time slice). Lets treat guest mode as quiescent state, just like
436 * we do with user-mode execution.
437 */
438 if (!context_tracking_guest_enter()) {
439 instrumentation_begin();
440 rcu_virt_note_context_switch();
441 instrumentation_end();
442 }
443 }
444
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
^ permalink raw reply [flat|nested] 2+ messages in thread
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