Sebastian Andrzej Siewior 877cff5296 x86/vdso: Fake 32bit VDSO build on 64bit compile for vgetcpu ... The 64bit register constrains in __arch_hweight64() cannot be fulfilled in a 32-bit build. The function is only declared but not used within vclock_gettime.c and gcc does not care. LLVM complains and aborts. Reportedly because it validates extended asm even if latter would get compiled out, see https://lore.kernel.org/r/Y%2BJ%2BUQ1vAKr6RHuH@dev-arch.thelio-3990X i.e., a long standing design difference between gcc and LLVM. Move the "fake a 32 bit kernel configuration" bits from vclock_gettime.c into a common header file. Use this from vclock_gettime.c and vgetcpu.c. [ bp: Add background info from Nathan. ] Fixes: 92d33063c0 ("x86/vdso: Provide getcpu for x86-32.") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/Y+IsCWQdXEr8d9Vy@linutronix.de		2023-02-07 18:20:41 +01:00
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.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
fake_32bit_build.h	x86/vdso: Fake 32bit VDSO build on 64bit compile for vgetcpu	2023-02-07 18:20:41 +01:00
note.S	x86/xen: remove 32-bit Xen PV guest support	2020-08-11 08:26:48 +02:00
sigreturn.S	x86: vdso: Expose sigreturn address on vdso to the kernel	2020-12-02 10:32:16 +01:00
system_call.S	x86: Prepare asm files for straight-line-speculation	2021-12-08 12:25:37 +01:00
vclock_gettime.c	x86/vdso: Fake 32bit VDSO build on 64bit compile for vgetcpu	2023-02-07 18:20:41 +01:00
vdso32.lds.S	x86/vdso: Provide getcpu for x86-32.	2023-02-06 15:48:54 +01:00
vgetcpu.c	x86/vdso: Fake 32bit VDSO build on 64bit compile for vgetcpu	2023-02-07 18:20:41 +01:00