KVM: arm64: Expose MOPS instructions to guests

Browse source

Expose the Armv8.8 FEAT_MOPS feature to guests in the ID register and
allow the MOPS instructions to be run in a guest. Only expose MOPS if
the whole system supports it.

Note, it is expected that guests do not use these instructions on MMIO,
similarly to other instructions where ESR_EL2.ISV==0 such as LDP/STP.

Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230922112508.1774352-3-kristina.martsenko@arm.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

...

This commit is contained in:

Kristina Martsenko 2023-09-22 12:25:08 +01:00 • committed by Oliver Upton

parent 2de451a329

commit e0bb80c62c

3 changed files with 5 additions and 4 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

4

arch/arm64/include/asm/kvm_arm.h

View file

3

arch/arm64/kvm/hyp/include/nvhe/fixed_config.h

View file

2

arch/arm64/kvm/sys_regs.c

View file