x86/vdso: Fix output operand size of RDPID

Browse source

[ Upstream commit ac9c408ed1 ]

RDPID instruction outputs to a word-sized register (64-bit on x86_64 and
32-bit on x86_32). Use an unsigned long variable to store the correct size.

LSL outputs to 32-bit register, use %k operand prefix to always print the
32-bit name of the register.

Use RDPID insn mnemonic while at it as the minimum binutils version of
2.30 supports it.

  [ bp: Merge two patches touching the same function into a single one. ]

Fixes: ffebbaedc8 ("x86/vdso: Introduce helper functions for CPU and node number")
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250616095315.230620-1-ubizjak@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Uros Bizjak 2025-06-16 11:52:57 +02:00 • committed by Greg Kroah-Hartman

parent c6cca4213b

commit abee6d32c9

1 changed files with 4 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

8

arch/x86/include/asm/segment.h

View file