motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-02 07:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

hw/arm/virt: KVM: Enable PAuth when supported by the host

Browse source 
Add basic support for Pointer Authentication when running a KVM
guest and that the host supports it, loosely based on the SVE
support.

Although the feature is enabled by default when the host advertises
it, it is possible to disable it by setting the 'pauth=off' CPU
property. The 'pauth' comment is removed from cpu-features.rst,
as it is now common to both TCG and KVM.

Tested on an Apple M1 running 5.16-rc6.

Cc: Eric Auger <eric.auger@redhat.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220107150154.2490308-1-maz@kernel.org
[PMM: fixed indentation]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Marc Zyngier 2022-01-07 15:01:54 +00:00 • committed by Peter Maydell
parent b10d00d881
commit 95ea96e8b1
5 changed files with 54 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

4
docs/system/arm/cpu-features.rst
View file

@ -217,10 +217,6 @@ TCG VCPU Features
TCG VCPU features are CPU features that are specific to TCG.
Below is the list of TCG VCPU features and their descriptions.
pauth Enable or disable ``FEAT_Pauth``, pointer
authentication. By default, the feature is
enabled with ``-cpu max``.
pauth-impdef When ``FEAT_Pauth`` is enabled, either the
*impdef* (Implementation Defined) algorithm
is enabled or the *architected* QARMA algorithm