tree 88f62776b6415c351a6243d6d6fc639df7f99589
parent 266068eabb1077adf7d74a66de6610e7a6205d02
author Christoffer Dall <christoffer.dall@linaro.org> 1480930331 +0100
committer Marc Zyngier <marc.zyngier@arm.com> 1481298420 +0000

KVM: arm/arm64: timer: Check for properly initialized timer on init

When the arch timer code fails to initialize (for example because the
memory mapped timer doesn't work, which is currently seen with the AEM
model), then KVM just continues happily with a final result that KVM
eventually does a NULL pointer dereference of the uninitialized cycle
counter.

Check directly for this in the init path and give the user a reasonable
error in this case.

Cc: Shih-Wei Li <shihwei@cs.columbia.edu>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>