The patch titled
um: setup irq regs in do_IRQ
has been added to the -mm tree. Its filename is
um-setup-irq-regs-in-do_irq.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: um: setup irq regs in do_IRQ
From: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
We need to setup and restore IRQ registers in __do_IRQ so that get_irq_regs
works correctly. Fixes Alt-Sysrq-p for UML.
Cc: Jeff Dike <jdike@xxxxxxxxxxx>
Cc: Paolo "Blaisorblade" Giarrusso <blaisorblade@xxxxxxxx>
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Signed-off-by: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/um/kernel/irq.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff -puN arch/um/kernel/irq.c~um-setup-irq-regs-in-do_irq arch/um/kernel/irq.c
--- a/arch/um/kernel/irq.c~um-setup-irq-regs-in-do_irq
+++ a/arch/um/kernel/irq.c
@@ -355,10 +355,14 @@ void forward_interrupts(int pid)
*/
unsigned int do_IRQ(int irq, union uml_pt_regs *regs)
{
- irq_enter();
- __do_IRQ(irq);
- irq_exit();
- return 1;
+ struct pt_regs *old_regs;
+
+ old_regs = set_irq_regs((struct pt_regs *) regs);
+ irq_enter();
+ __do_IRQ(irq);
+ irq_exit();
+ set_irq_regs(old_regs);
+ return 1;
}
int um_request_irq(unsigned int irq, int fd, int type,
_
Patches currently in -mm which might be from penberg@xxxxxxxxxxxxxx are
origin.patch
um-setup-irq-regs-in-do_irq.patch
slab-leaks3-default-y.patch
-
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