Re: [RFC PATCH 2/2] KVM: MMU: return page fault error code from permission_fault

From: Xiao Guangrong
Date: Thu Mar 10 2016 - 09:04:34 EST

On 03/08/2016 07:45 PM, Paolo Bonzini wrote:
Intel's new PKU extension introduces a bit of the page fault error code
that must be dynamically computed after the PTE lookup (unlike I/D, U/S
and W/R). To ease this, these two patches make permission_fault return
the page fault error code.

Right now it only adds the P bit to the input parameter "pfec", but PKU
can change that.

Yep, i got the same idea when i reviewed the pkey patchset. This patch
looks good to me.

Reviewed-by: Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx>