KVM: PPC: Book3S HV P9: Only execute mtSPR if the value changed

Browse source

Keep better track of the current SPR value in places where
they are to be loaded with a new context, to reduce expensive
mtSPR operations.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-27-npiggin@gmail.com

...

This commit is contained in:

Nicholas Piggin 2021-11-23 19:52:04 +10:00 • committed by Michael Ellerman

parent 9a1e530bbb

commit 9dfe7aa7bc

1 changed files with 31 additions and 20 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

51

arch/powerpc/kvm/book3s_hv.c

View file