Re: [PATCH 09/26] KVM: PPC: Add PV guest scratch registers
From: Avi Kivity <hidden>
Date: 2010-06-27 09:53:16
Also in:
kvm
From: Avi Kivity <hidden>
Date: 2010-06-27 09:53:16
Also in:
kvm
On 06/27/2010 12:41 PM, Alexander Graf wrote:
Am 27.06.2010 um 10:22 schrieb Avi Kivity [off-list ref]:quoted
On 06/26/2010 02:24 AM, Alexander Graf wrote:quoted
While running in hooked code we need to store register contents out because we must not clobber any registers. So let's add some fields to the shared page we can just happily write to.How are these protected during interrupts?By the 'critical section' bit. When in a critical section (read: using scratch registers), we don't issue interrupts.
Ok. I thought you needed scratch registers to set up the critical section, but you don't. Neat stuff. -- error compiling committee.c: too many arguments to function