On Fri, Nov 17, 2023 at 3:56 PM tip-bot2 for Uros Bizjak <tip-bot2@xxxxxxxxxxxxx> wrote: > > The following commit has been merged into the x86/mm branch of tip: > > Commit-ID: bc5607d7777423b742f5b0f7a760d074154c613f > Gitweb: https://git.kernel.org/tip/bc5607d7777423b742f5b0f7a760d074154c613f > Author: Uros Bizjak <ubizjak@xxxxxxxxx> > AuthorDate: Thu, 16 Nov 2023 20:10:59 +01:00 > Committer: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> > CommitterDate: Fri, 17 Nov 2023 06:27:29 -08:00 > > x86/mm: 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@xxxxxxxxx> > Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> > Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> > Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > Link: https://lore.kernel.org/all/20231116191127.3446476-1-ubizjak%40gmail.com I would just like to point out that this change depends on x86/percpu branch in tip. So, the x86/mm has to come after x86/percpu. Uros.
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