Re: [PATCH v2 00/59] x86/retbleed: Call depth tracking mitigation

[Mel Gorman]

On Fri, Sep 02, 2022 at 03:06:25PM +0200, Peter Zijlstra wrote:
> Excerpts from IBRS vs stuff from Mel's testing:
> 

FWIW, I retested this version as there were slight changes and retbleed=stuff
on Skylake is still far faster than the default. The default performance
differences are mostly within the noise versus a vanilla 6.0-rc3 kernel.
Other generations of Intel machine showed mostly noise. Zen[1-3] showed
no significant difference (immune to retbleed but functional alignment or
percpu structure changes might have mattered). For the series;

Tested-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>

-- 
Mel Gorman
SUSE Labs