tree 320c5c43943a8ac616f9262ebf187234c25ec7ec
parent fd0a05bd27ddedb9e61f413bea147b1876d610b7
author Suzuki K Poulose <suzuki.poulose@arm.com> 1593613202 +0100
committer Will Deacon <will@kernel.org> 1593777417 +0100

kvmtool: arm64: Report missing support for 32bit guests

When the host doesn't support 32bit guests, the kvmtool fails
without a proper message on what is wrong. i.e,

 $ lkvm run -c 1 Image --aarch32
  # lkvm run -k Image -m 256 -c 1 --name guest-105618
  Fatal: Unable to initialise vcpu

Given that there is no other easy way to check if the host supports 32bit
guests, it is always good to report this by checking the capability, rather
than leaving the users to hunt this down by looking at the code!

After this patch:

 $ lkvm run -c 1 Image --aarch32
  # lkvm run -k Image -m 256 -c 1 --name guest-105695
  Fatal: 32bit guests are not supported

Reported-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20200701142002.51654-1-suzuki.poulose@arm.com
Signed-off-by: Will Deacon <will@kernel.org>