* Re: [PATCH v3 16/16] x86/paravirt: Use alternatives for MSR access with paravirt
[not found] <20260218082133.400602-17-jgross@suse.com>
@ 2026-02-18 13:49 ` kernel test robot
2026-02-18 15:49 ` Juergen Gross
0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2026-02-18 13:49 UTC (permalink / raw)
To: Juergen Gross, linux-kernel, x86, virtualization
Cc: llvm, oe-kbuild-all, Juergen Gross, Ajay Kaher, Alexey Makhalov,
Broadcom internal kernel review list, Thomas Gleixner,
Ingo Molnar, Borislav Petkov, Dave Hansen, H. Peter Anvin
Hi Juergen,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on next-20260217]
[cannot apply to tip/x86/core kvm/queue kvm/next kvm/linux-next tip/x86/tdx v6.19]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Juergen-Gross/x86-alternative-Support-alt_replace_call-with-instructions-after-call/20260218-163031
base: linus/master
patch link: https://lore.kernel.org/r/20260218082133.400602-17-jgross%40suse.com
patch subject: [PATCH v3 16/16] x86/paravirt: Use alternatives for MSR access with paravirt
config: x86_64-randconfig-001-20260218 (https://download.01.org/0day-ci/archive/20260218/202602182111.84MpXRx4-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260218/202602182111.84MpXRx4-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202602182111.84MpXRx4-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/x86/kernel/asm-offsets.c:9:
In file included from include/linux/crypto.h:18:
In file included from include/linux/slab.h:17:
In file included from include/linux/gfp.h:7:
In file included from include/linux/mmzone.h:22:
In file included from include/linux/mm_types.h:16:
In file included from include/linux/uprobes.h:18:
In file included from include/linux/timer.h:6:
In file included from include/linux/ktime.h:25:
In file included from include/linux/jiffies.h:10:
In file included from include/linux/time.h:60:
In file included from include/linux/time32.h:13:
In file included from include/linux/timex.h:67:
In file included from arch/x86/include/asm/timex.h:6:
In file included from arch/x86/include/asm/tsc.h:11:
In file included from arch/x86/include/asm/msr.h:300:
>> arch/x86/include/asm/paravirt-msr.h:114:23: error: unsupported inline asm: input with type 'u64' (aka 'unsigned long long') matching output with type 'int'
114 | PV_WRMSR_CONST(msr, val, EX_TYPE_WRMSR, write_msr, err);
| ^~~ ~~~
arch/x86/include/asm/paravirt-msr.h:91:16: note: expanded from macro 'PV_WRMSR_CONST'
89 | : [err] "=a" (__err), "=d" (rdx), ASM_CALL_CONSTRAINT \
| ~~~~~
90 | : paravirt_ptr(pv_ops_msr, __func), \
91 | [val] "0" (__val), "1" ((__val) >> 32), \
| ^~~~~
arch/x86/include/asm/paravirt-msr.h:116:21: error: unsupported inline asm: input with type 'u64' (aka 'unsigned long long') matching output with type 'int'
116 | PV_WRMSR_VAR(msr, val, EX_TYPE_WRMSR, write_msr, err);
| ^~~ ~~~
arch/x86/include/asm/paravirt-msr.h:73:10: note: expanded from macro 'PV_WRMSR_VAR'
71 | : [err] "=a" (__err), "=d" (rdx), ASM_CALL_CONSTRAINT \
| ~~~~~
72 | : paravirt_ptr(pv_ops_msr, __func), \
73 | "0" (__val), "1" ((__val) >> 32), "c" (__msr) \
| ^~~~~
arch/x86/include/asm/paravirt-msr.h:136:23: error: unsupported inline asm: input with type 'u64' (aka 'unsigned long long') matching output with type 'int'
136 | PV_WRMSR_CONST(msr, val, EX_TYPE_WRMSR_SAFE, write_msr_safe, err);
| ^~~ ~~~
arch/x86/include/asm/paravirt-msr.h:91:16: note: expanded from macro 'PV_WRMSR_CONST'
89 | : [err] "=a" (__err), "=d" (rdx), ASM_CALL_CONSTRAINT \
| ~~~~~
90 | : paravirt_ptr(pv_ops_msr, __func), \
91 | [val] "0" (__val), "1" ((__val) >> 32), \
| ^~~~~
arch/x86/include/asm/paravirt-msr.h:138:21: error: unsupported inline asm: input with type 'u64' (aka 'unsigned long long') matching output with type 'int'
138 | PV_WRMSR_VAR(msr, val, EX_TYPE_WRMSR_SAFE, write_msr_safe, err);
| ^~~ ~~~
arch/x86/include/asm/paravirt-msr.h:73:10: note: expanded from macro 'PV_WRMSR_VAR'
71 | : [err] "=a" (__err), "=d" (rdx), ASM_CALL_CONSTRAINT \
| ~~~~~
72 | : paravirt_ptr(pv_ops_msr, __func), \
73 | "0" (__val), "1" ((__val) >> 32), "c" (__msr) \
| ^~~~~
In file included from arch/x86/kernel/asm-offsets.c:10:
In file included from include/crypto/aria.h:22:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/x86/include/asm/elf.h:10:
In file included from arch/x86/include/asm/ia32.h:7:
In file included from include/linux/compat.h:17:
In file included from include/linux/fs.h:5:
In file included from include/linux/fs/super.h:5:
In file included from include/linux/fs/super_types.h:13:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
98 | return (set->sig[3] | set->sig[2] |
| ^ ~
arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
24 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/x86/kernel/asm-offsets.c:10:
In file included from include/crypto/aria.h:22:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/x86/include/asm/elf.h:10:
In file included from arch/x86/include/asm/ia32.h:7:
In file included from include/linux/compat.h:17:
In file included from include/linux/fs.h:5:
In file included from include/linux/fs/super.h:5:
In file included from include/linux/fs/super_types.h:13:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
98 | return (set->sig[3] | set->sig[2] |
| ^ ~
arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
24 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/x86/kernel/asm-offsets.c:10:
In file included from include/crypto/aria.h:22:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/x86/include/asm/elf.h:10:
In file included from arch/x86/include/asm/ia32.h:7:
In file included from include/linux/compat.h:17:
In file included from include/linux/fs.h:5:
In file included from include/linux/fs/super.h:5:
In file included from include/linux/fs/super_types.h:13:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:99:4: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
99 | set->sig[1] | set->sig[0]) == 0;
| ^ ~
arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
24 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/x86/kernel/asm-offsets.c:10:
In file included from include/crypto/aria.h:22:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/x86/include/asm/elf.h:10:
In file included from arch/x86/include/asm/ia32.h:7:
In file included from include/linux/compat.h:17:
In file included from include/linux/fs.h:5:
vim +114 arch/x86/include/asm/paravirt-msr.h
108
109 static __always_inline void write_msr(u32 msr, u64 val)
110 {
111 int err;
112
113 if (__builtin_constant_p(msr))
> 114 PV_WRMSR_CONST(msr, val, EX_TYPE_WRMSR, write_msr, err);
115 else
116 PV_WRMSR_VAR(msr, val, EX_TYPE_WRMSR, write_msr, err);
117 }
118
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH v3 16/16] x86/paravirt: Use alternatives for MSR access with paravirt
2026-02-18 13:49 ` [PATCH v3 16/16] x86/paravirt: Use alternatives for MSR access with paravirt kernel test robot
@ 2026-02-18 15:49 ` Juergen Gross
0 siblings, 0 replies; 2+ messages in thread
From: Juergen Gross @ 2026-02-18 15:49 UTC (permalink / raw)
To: kernel test robot, linux-kernel, x86, virtualization
Cc: llvm, oe-kbuild-all, Ajay Kaher, Alexey Makhalov,
Broadcom internal kernel review list, Thomas Gleixner,
Ingo Molnar, Borislav Petkov, Dave Hansen, H. Peter Anvin
[-- Attachment #1.1.1: Type: text/plain, Size: 10125 bytes --]
On 18.02.26 14:49, kernel test robot wrote:
> Hi Juergen,
>
> kernel test robot noticed the following build errors:
>
> [auto build test ERROR on linus/master]
> [also build test ERROR on next-20260217]
> [cannot apply to tip/x86/core kvm/queue kvm/next kvm/linux-next tip/x86/tdx v6.19]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
>
> url: https://github.com/intel-lab-lkp/linux/commits/Juergen-Gross/x86-alternative-Support-alt_replace_call-with-instructions-after-call/20260218-163031
> base: linus/master
> patch link: https://lore.kernel.org/r/20260218082133.400602-17-jgross%40suse.com
> patch subject: [PATCH v3 16/16] x86/paravirt: Use alternatives for MSR access with paravirt
> config: x86_64-randconfig-001-20260218 (https://download.01.org/0day-ci/archive/20260218/202602182111.84MpXRx4-lkp@intel.com/config)
> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260218/202602182111.84MpXRx4-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202602182111.84MpXRx4-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
> In file included from arch/x86/kernel/asm-offsets.c:9:
> In file included from include/linux/crypto.h:18:
> In file included from include/linux/slab.h:17:
> In file included from include/linux/gfp.h:7:
> In file included from include/linux/mmzone.h:22:
> In file included from include/linux/mm_types.h:16:
> In file included from include/linux/uprobes.h:18:
> In file included from include/linux/timer.h:6:
> In file included from include/linux/ktime.h:25:
> In file included from include/linux/jiffies.h:10:
> In file included from include/linux/time.h:60:
> In file included from include/linux/time32.h:13:
> In file included from include/linux/timex.h:67:
> In file included from arch/x86/include/asm/timex.h:6:
> In file included from arch/x86/include/asm/tsc.h:11:
> In file included from arch/x86/include/asm/msr.h:300:
>>> arch/x86/include/asm/paravirt-msr.h:114:23: error: unsupported inline asm: input with type 'u64' (aka 'unsigned long long') matching output with type 'int'
> 114 | PV_WRMSR_CONST(msr, val, EX_TYPE_WRMSR, write_msr, err);
> | ^~~ ~~~
> arch/x86/include/asm/paravirt-msr.h:91:16: note: expanded from macro 'PV_WRMSR_CONST'
> 89 | : [err] "=a" (__err), "=d" (rdx), ASM_CALL_CONSTRAINT \
> | ~~~~~
> 90 | : paravirt_ptr(pv_ops_msr, __func), \
> 91 | [val] "0" (__val), "1" ((__val) >> 32), \
> | ^~~~~
> arch/x86/include/asm/paravirt-msr.h:116:21: error: unsupported inline asm: input with type 'u64' (aka 'unsigned long long') matching output with type 'int'
> 116 | PV_WRMSR_VAR(msr, val, EX_TYPE_WRMSR, write_msr, err);
> | ^~~ ~~~
> arch/x86/include/asm/paravirt-msr.h:73:10: note: expanded from macro 'PV_WRMSR_VAR'
> 71 | : [err] "=a" (__err), "=d" (rdx), ASM_CALL_CONSTRAINT \
> | ~~~~~
> 72 | : paravirt_ptr(pv_ops_msr, __func), \
> 73 | "0" (__val), "1" ((__val) >> 32), "c" (__msr) \
> | ^~~~~
> arch/x86/include/asm/paravirt-msr.h:136:23: error: unsupported inline asm: input with type 'u64' (aka 'unsigned long long') matching output with type 'int'
> 136 | PV_WRMSR_CONST(msr, val, EX_TYPE_WRMSR_SAFE, write_msr_safe, err);
> | ^~~ ~~~
> arch/x86/include/asm/paravirt-msr.h:91:16: note: expanded from macro 'PV_WRMSR_CONST'
> 89 | : [err] "=a" (__err), "=d" (rdx), ASM_CALL_CONSTRAINT \
> | ~~~~~
> 90 | : paravirt_ptr(pv_ops_msr, __func), \
> 91 | [val] "0" (__val), "1" ((__val) >> 32), \
> | ^~~~~
> arch/x86/include/asm/paravirt-msr.h:138:21: error: unsupported inline asm: input with type 'u64' (aka 'unsigned long long') matching output with type 'int'
> 138 | PV_WRMSR_VAR(msr, val, EX_TYPE_WRMSR_SAFE, write_msr_safe, err);
> | ^~~ ~~~
> arch/x86/include/asm/paravirt-msr.h:73:10: note: expanded from macro 'PV_WRMSR_VAR'
> 71 | : [err] "=a" (__err), "=d" (rdx), ASM_CALL_CONSTRAINT \
> | ~~~~~
> 72 | : paravirt_ptr(pv_ops_msr, __func), \
> 73 | "0" (__val), "1" ((__val) >> 32), "c" (__msr) \
> | ^~~~~
> In file included from arch/x86/kernel/asm-offsets.c:10:
> In file included from include/crypto/aria.h:22:
> In file included from include/linux/module.h:20:
> In file included from include/linux/elf.h:6:
> In file included from arch/x86/include/asm/elf.h:10:
> In file included from arch/x86/include/asm/ia32.h:7:
> In file included from include/linux/compat.h:17:
> In file included from include/linux/fs.h:5:
> In file included from include/linux/fs/super.h:5:
> In file included from include/linux/fs/super_types.h:13:
> In file included from include/linux/percpu-rwsem.h:7:
> In file included from include/linux/rcuwait.h:6:
> In file included from include/linux/sched/signal.h:6:
> include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
> 98 | return (set->sig[3] | set->sig[2] |
> | ^ ~
> arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
> 24 | unsigned long sig[_NSIG_WORDS];
> | ^
> In file included from arch/x86/kernel/asm-offsets.c:10:
> In file included from include/crypto/aria.h:22:
> In file included from include/linux/module.h:20:
> In file included from include/linux/elf.h:6:
> In file included from arch/x86/include/asm/elf.h:10:
> In file included from arch/x86/include/asm/ia32.h:7:
> In file included from include/linux/compat.h:17:
> In file included from include/linux/fs.h:5:
> In file included from include/linux/fs/super.h:5:
> In file included from include/linux/fs/super_types.h:13:
> In file included from include/linux/percpu-rwsem.h:7:
> In file included from include/linux/rcuwait.h:6:
> In file included from include/linux/sched/signal.h:6:
> include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
> 98 | return (set->sig[3] | set->sig[2] |
> | ^ ~
> arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
> 24 | unsigned long sig[_NSIG_WORDS];
> | ^
> In file included from arch/x86/kernel/asm-offsets.c:10:
> In file included from include/crypto/aria.h:22:
> In file included from include/linux/module.h:20:
> In file included from include/linux/elf.h:6:
> In file included from arch/x86/include/asm/elf.h:10:
> In file included from arch/x86/include/asm/ia32.h:7:
> In file included from include/linux/compat.h:17:
> In file included from include/linux/fs.h:5:
> In file included from include/linux/fs/super.h:5:
> In file included from include/linux/fs/super_types.h:13:
> In file included from include/linux/percpu-rwsem.h:7:
> In file included from include/linux/rcuwait.h:6:
> In file included from include/linux/sched/signal.h:6:
> include/linux/signal.h:99:4: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
> 99 | set->sig[1] | set->sig[0]) == 0;
> | ^ ~
> arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
> 24 | unsigned long sig[_NSIG_WORDS];
> | ^
> In file included from arch/x86/kernel/asm-offsets.c:10:
> In file included from include/crypto/aria.h:22:
> In file included from include/linux/module.h:20:
> In file included from include/linux/elf.h:6:
> In file included from arch/x86/include/asm/elf.h:10:
> In file included from arch/x86/include/asm/ia32.h:7:
> In file included from include/linux/compat.h:17:
> In file included from include/linux/fs.h:5:
>
>
> vim +114 arch/x86/include/asm/paravirt-msr.h
>
> 108
> 109 static __always_inline void write_msr(u32 msr, u64 val)
> 110 {
> 111 int err;
> 112
> 113 if (__builtin_constant_p(msr))
> > 114 PV_WRMSR_CONST(msr, val, EX_TYPE_WRMSR, write_msr, err);
> 115 else
> 116 PV_WRMSR_VAR(msr, val, EX_TYPE_WRMSR, write_msr, err);
> 117 }
> 118
>
Will be fixed in V4.
Juergen
[-- Attachment #1.1.2: OpenPGP public key --]
[-- Type: application/pgp-keys, Size: 3743 bytes --]
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 495 bytes --]
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[not found] <20260218082133.400602-17-jgross@suse.com>
2026-02-18 13:49 ` [PATCH v3 16/16] x86/paravirt: Use alternatives for MSR access with paravirt kernel test robot
2026-02-18 15:49 ` Juergen Gross
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