Re: [PATCH] x86/resctrl: Fix to restore to original value when re-enabling hardware prefetch register

[Dave Hansen]

On 5/17/22 21:55, Kohei Tarumizu wrote:
> The current pseudo_lock.c code overwrites the value of the
> MSR_MISC_FEATURE_CONTROL to 0 even if the original value is not 0.
> Therefore, modify it to save and restore the original values.
> 
> Fixes: 018961ae5579 ("x86/intel_rdt: Pseudo-lock region creation/removal core")
> Fixes: 443810fe6160 ("x86/intel_rdt: Create debugfs files for pseudo-locking testing")
> Fixes: 8a2fc0e1bc0c ("x86/intel_rdt: More precise L2 hit/miss measurements")
> Signed-off-by: Kohei Tarumizu <tarumizu.kohei@xxxxxxxxxxx>

Those commits are pretty old.  Is there any reason this is not stable@
material?