[PATCH 1/2] powerpc/book3e-64: hv exceptions aren't MASKABLE

[Kumar Gala]

On May 20, 2011, at 2:00 PM, Scott Wood wrote:

> In general we will not have EE soft-disabled or be napping when
> these exceptions happen, but still it is not correct.
> 
> The guest doorbell exceptions can only be triggered with MSR[GS]=1,
> and thus for host kernel nesting purposes are base-level exceptions.
> 
> Note that ehpriv and hypercall are triggerable from normal userspace.
> I tested that the process gets properly signalled in this case.
> 
> Signed-off-by: Scott Wood <scottwood at freescale.com>
> ---
> arch/powerpc/include/asm/reg_booke.h |    2 +
> arch/powerpc/kernel/exceptions-64e.S |   67 ++++++++++++++++++++++++++--------
> 2 files changed, 53 insertions(+), 16 deletions(-)

Can you look at a similar patch for 32-bit fsl-booke so we handle HV exceptions if they happen to get generated, maybe something already exists for KVM.

- k