KVM: arm64: Get rid of HCRX_GUEST_FLAGS

Browse source

HCRX_GUEST_FLAGS gives random KVM hackers the impression that
they can stuff bits in this macro and unconditionally enable
features in the guest.

In general, this is wrong (we have been there with FEAT_MOPS,
and again with FEAT_TCRX).

Document that HCRX_EL2.SMPME is an exception rather than the rule,
and get rid of HCRX_GUEST_FLAGS.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Link: https://lore.kernel.org/r/20240625130042.259175-3-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

...

This commit is contained in:

Marc Zyngier 2024-06-25 14:00:38 +01:00 • committed by Oliver Upton

parent 9b58e665d6

commit a3ee9ce88b

2 changed files with 7 additions and 2 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

1

arch/arm64/include/asm/kvm_arm.h

View file

8

arch/arm64/kvm/sys_regs.c

View file