Commit a5447e92 authored Apr 13, 2025 by Ingo Molnar

x86/msr: Add compatibility wrappers for rdmsrl()/wrmsrl()

To reduce the impact of the API renames in -next, add compatibility
wrappers for the two most popular MSR access APIs: rdmsrl() and wrmsrl().

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Xin Li <xin@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org

parent eef476f1

arch/x86/include/asm/msr.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -396,5 +396,10 @@ static inline int wrmsr_safe_regs_on_cpu(unsigned int cpu, u32 regs[8])
		return wrmsr_safe_regs(regs);
		}
		#endif /* CONFIG_SMP */

		/* Compatibility wrappers: */
		#define rdmsrl(msr, val) rdmsrq(msr, val)
		#define wrmsrl(msr, val) wrmsrq(msr, val)

		#endif /* __ASSEMBLER__ */
		#endif /* _ASM_X86_MSR_H */