[tip: x86/misc] x86/MSR: Filter MSR writes through X86_IOC_WRMSR_REGS ioctl too

2021-01-27 Thread tip-bot2 for Misono Tomohiro
The following commit has been merged into the x86/misc branch of tip: Commit-ID: 02a16aa13574c8526beadfc9ae8cc9b66315fa2d Gitweb: https://git.kernel.org/tip/02a16aa13574c8526beadfc9ae8cc9b66315fa2d Author:Misono Tomohiro AuthorDate:Wed, 27 Jan 2021 21:24:56 +09:00

[PATCH] x86/msr: Filter msr write by X86_IOC_WRMSR_REGS ioctl

2021-01-27 Thread Misono Tomohiro
x86/msr: Filter MSR writes") Signed-off-by: Misono Tomohiro --- Hello, I just noticed this when I read the code. I'm not sure if anyone uses ioctl interface now, but I tested this by resetting IA32_MPERF by X86_IOC_WRMSR_REGS ioctl. Thanks, arch/x86/kernel/msr.c | 4 1 file chang

Question about dmesg/sysfs output when retpoline config is disabled

2018-01-29 Thread Misono, Tomohiro
Hello, I think dmesg/sysfs output messages are not suitable if retpoline config is off: I intentionally compiled the kernel 4.15.0 with CONFIG_RETPOLINE=n for test and boot it with the following kernel command line option to check dmesg/sysfs: (a) no command line option or "spectre_v2=on" or "s