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| author |  Ammar Faizi <ammarfaizi2@gnuweeb.org>
| 2022-12-24 00:23:38 +0700 |
|---|---|---|
| committer |  Richard Weinberger <richard@nod.at>
| 2023-02-10 21:33:37 +0100 |
| commit | 5541992e512de8c9133110809f767bd1b54ee10d (patch) | |
| tree | d9b457237b4bf9ead98a7f9ade2c9a80d60161bf /arch/um/kernel/um_arch.c | |
| parent | rust: arch/um: Add support for CONFIG_RUST under x86_64 UML (diff) | |
| download | linux-5541992e512de8c9133110809f767bd1b54ee10d.tar.gz linux-5541992e512de8c9133110809f767bd1b54ee10d.tar.bz2 linux-5541992e512de8c9133110809f767bd1b54ee10d.zip | |
x86: um: vdso: Add '%rcx' and '%r11' to the syscall clobber list
The 'syscall' instruction clobbers '%rcx' and '%r11', but they are not
listed in the inline Assembly that performs the syscall instruction.
No real bug is found. It wasn't buggy by luck because '%rcx' and '%r11'
are caller-saved registers, and not used in the functions, and the
functions are never inlined.
Add them to the clobber list for code correctness.
Fixes: f1c2bb8b9964ed31de988910f8b1cfb586d30091 ("um: implement a x86_64 vDSO")
Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/kernel/um_arch.c')
0 files changed, 0 insertions, 0 deletions