On Mon, May 08, 2023, Mathias Krause wrote: > This is a backport of the CR0.WP KVM series[1] to Linux v5.10. It > further extends the v5.15 backport by two patches, namely patch 5 (which > is the prerequisite for Lai's patches) and patch 8 which was already > part of the v5.15.27 stable update but didn't made it to v5.10. > > I used 'ssdd 10 50000' from rt-tests[2] as a micro-benchmark, running on > a grsecurity L1 VM. Below table shows the results (runtime in seconds, > lower is better): > > legacy TDP shadow > Linux v5.10.177 10.37s 88.7s 69.7s > + patches 4.88s 4.92s 70.1s > > TDP MMU is, as for v5.15, slower than shadow paging on a vanilla kernel. > Fortunately it's disabled by default. > > The KVM unit test suite showed no regressions. > > Please consider applying. NAK, same reasoning as the 5.15 backports. https://lore.kernel.org/all/ZF1a8xIGLwcdJDVZ@xxxxxxxxxx
