Commit 18741a52 authored by Borislav Petkov's avatar Borislav Petkov
Browse files

x86/msr: Do not allow writes to MSR_IA32_ENERGY_PERF_BIAS 



Now that all in-kernel-tree users are converted to using the sysfs file,
remove the MSR from the "allowlist".

Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Reviewed-by: default avatarShuah Khan <skhan@linuxfoundation.org>
Link: https://lkml.kernel.org/r/20201029190259.3476-5-bp@alien8.de
parent fe0a5788

arch/x86/kernel/msr.c

+0 −3
Original line number Diff line number Diff line
@@ -99,9 +99,6 @@ static int filter_write(u32 reg) 
	if (!__ratelimit(&fw_rs))

		return 0;



	if (reg == MSR_IA32_ENERGY_PERF_BIAS)

		return 0;



	pr_err("Write to unrecognized MSR 0x%x by %s (pid: %d). Please report to x86@kernel.org.\n",

	       reg, current->comm, current->pid);