From: Rusty Russell <rusty@rustcorp.com.au>
Date: Wed, 8 May 2013 00:36:55 +0000 (+0930)
Subject: lguest: clear cached last cpu when guest_set_pgd() called.
X-Git-Tag: v3.10-rc2~37^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f616fe4feee4000c2995d2d1e1981513bf9ab0d4;p=pandora-kernel.git

lguest: clear cached last cpu when guest_set_pgd() called.

commit v3.9-rc1-53-g6d0cda9 "lguest: cache last cpu we ran on." missed
one case, which causes a triple fault.  The guest calls guest_set_pgd()
on the top page, and we carefully remap the Switcher text page.  But
we didn't reset last_host_cpu, so map_switcher_in_guest() thinks
the guest's regs and IDT/GDT etc are already mapped.

Reported-by: Paul Bolle <pebolle@tiscali.nl>
Tested-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---

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