Hi,
On 3/27/19 4:14 PM, Dave Martin wrote:
On Mon, Mar 25, 2019 at 08:05:49PM +0000, Kristina Martsenko wrote:
On 19/03/2019 08:30, Amit Daniel Kachhap wrote:
This adds sections for KVM API extension for pointer authentication.
A brief description about usage of pointer authentication for KVM guests
is added in the arm64 documentations.
Signed-off-by: Amit Daniel Kachhap <amit.kach...@arm.com>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: Christoffer Dall <christoffer.d...@arm.com>
Cc: Marc Zyngier <marc.zyng...@arm.com>
Cc: kvmarm@lists.cs.columbia.edu
I think it makes sense to also update the Kconfig symbol description for
CONFIG_ARM64_PTR_AUTH, since it currently only mentions userspace
support, but now the option also enables KVM guest support.
It's also worth mentioning that CONFIG_ARM64_VHE=y is required for guest
support.
Is it worth making this dependency explicit in Kconfig?
Currently there is discrepancy that userspace supports ptrauth in both
nVHE/VHE mode and KVM guest only in VHE mode. I suppose adding explicit
dependency flag here makes both of them similar.
Thanks,
Amit D
For SVE, I have
config ARM64_SVE
depends on !KVM || ARM64_VHE
to implement this.
Cheers
---Dave
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