diff options
| author |   Zachary Amsden <zach@vmware.com> | 2007-02-13 13:26:21 +0100 |
|---|---|---|
| committer |   Andi Kleen <andi@basil.nowhere.org> | 2007-02-13 13:26:21 +0100 |
| commit | 8b15114434998a78aa50f8559d69c7a400cff267 (patch) | |
| tree | 2385fd562d0f625baaf32e75dd7dbedc966e9635 /arch/i386/kernel/smpboot.c | |
| parent | [PATCH] i386: paravirt CPU hypercall batching mode (diff) | |
| download | linux-dev-8b15114434998a78aa50f8559d69c7a400cff267.tar.xz linux-dev-8b15114434998a78aa50f8559d69c7a400cff267.zip | |
[PATCH] i386: iOPL handling for paravirt guests
I found a clever way to make the extra IOPL switching invisible to
non-paravirt compiles - since kernel_rpl is statically defined to be zero
there, and only non-zero rpl kernel have a problem restoring IOPL, as popf
does not restore IOPL flags unless run at CPL-0.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions