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| author |  Uros Bizjak <ubizjak@gmail.com>
| 2023-12-13 16:03:15 +0100 |
|---|---|---|
| committer |  Ingo Molnar <mingo@kernel.org>
| 2024-01-09 09:39:15 +0100 |
| commit | de8c6a352131f642b82474abe0cbb5dd26a7e081 (patch) | |
| tree | 9445efbc545555ee20a61e35fdf73264519f6791 /arch/x86/lib/iomap_copy_64.S | |
| parent | x86/alternatives: Move apply_relocation() out of init section (diff) | |
| download | linux-de8c6a352131f642b82474abe0cbb5dd26a7e081.tar.gz linux-de8c6a352131f642b82474abe0cbb5dd26a7e081.tar.bz2 linux-de8c6a352131f642b82474abe0cbb5dd26a7e081.zip | |
x86/percpu: Use %RIP-relative address in untagged_addr()
%RIP-relative addresses are nowadays correctly handled in alternative
instructions, so remove misleading comment and improve assembly to
use %RIP-relative address.
Also, explicitly using %gs: prefix will segfault for non-SMP builds.
Use macros from percpu.h which will DTRT with segment prefix register
as far as SMP/non-SMP builds are concerned.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradaed.org>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/all/20231213150357.5942-1-ubizjak%40gmail.com
Diffstat (limited to 'arch/x86/lib/iomap_copy_64.S')
0 files changed, 0 insertions, 0 deletions