| Age | Commit message (Collapse) | Author | Files | Lines | |
|---|---|---|---|---|---|
| 2023-02-07 | x86/vdso: Fake 32bit VDSO build on 64bit compile for vgetcpu | Sebastian Andrzej Siewior | 1 | -0/+1 | |
| 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%[email protected] 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: 92d33063c081a ("x86/vdso: Provide getcpu for x86-32.") Reported-by: kernel test robot <[email protected]> Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Borislav Petkov (AMD) <[email protected]> Link: https://lore.kernel.org/r/[email protected] | |||||
| 2023-02-06 | x86/vdso: Provide getcpu for x86-32. | Sebastian Andrzej Siewior | 1 | -0/+2 | |
| Wire up __vdso_getcpu() for x86-32. The 64bit version is reused with trivial modifications. Contrary to vclock_gettime.c there is no requirement to fake any defines in the case of 32bit VDSO on a 64bit kernel because the GDT entry from which the CPU and node information is read is always the native one. Adopt vdso_getcpu.c by: - removing the unneeded time* header files which lead to compile errors for 32bit. - adding segment.h which provides vdso_read_cpunode() and the defines required by it. Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Link: https://lore.kernel.org/r/[email protected] | |||||