On Mon, May 08, 2023 at 05:44:52PM +0200, Mathias Krause wrote:
This is a backport of the CR0.WP KVM series[1] to Linux v6.2. All
commits applied either clean or with only minor changes needed to
account for missing prerequisite patches, e.g. the lack of a
kvm_is_cr0_bit_set() helper for patch 5 or the slightly different
surrounding context in patch 4 (__always_inline vs. plain inline for
to_kvm_vmx()).
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 v6.2.10 7.61s 7.98s 68.6s
+ patches 3.37s 3.41s 70.2s
The KVM unit test suite showed no regressions.
Please consider applying.
On our end waiting for ack from the KVM maintainers.
--
Thanks,
Sasha
