On Thu, Jan 14, 2010 at 06:31:07PM +0100, Peter Zijlstra wrote:On Tue, 2010-01-05 at 16:12 +0200, Gleb Natapov wrote:I would gladly use fault vector reserved by x86 architecture, but I amAllow paravirtualized guest to do special handling for some page faults.
The patch adds one 'if' to do_page_fault() function. The call is patched
out when running on physical HW. I ran kernbech on the kernel with and
without that additional 'if' and result were rawly the same:
So why not program a different handler address for the #PF/#GP faults
and avoid the if all together?
not sure Intel will be happy about it.