* [PATCH] KVM: Fix asm constraints for segment loads
@ 2006-11-12 14:02 Avi Kivity
0 siblings, 0 replies; only message in thread
From: Avi Kivity @ 2006-11-12 14:02 UTC (permalink / raw)
To: kvm-devel; +Cc: akpm, linux-kernel, bero
From: Bernhard Rosenkraenzer <bero@arklinux.org>
"g" is an invalid constraint for a segment register load, since it includes
immediate operands, which are illegal for segment moves.
Fix by specifying register or memory operands.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Index: linux-2.6/drivers/kvm/kvm_main.c
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm_main.c
+++ linux-2.6/drivers/kvm/kvm_main.c
@@ -154,12 +154,12 @@ static u16 read_ldt(void)
static void load_fs(u16 sel)
{
- asm ("mov %0, %%fs" : : "g"(sel));
+ asm ("mov %0, %%fs" : : "rm"(sel));
}
static void load_gs(u16 sel)
{
- asm ("mov %0, %%gs" : : "g"(sel));
+ asm ("mov %0, %%gs" : : "rm"(sel));
}
#ifndef load_ldt
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2006-11-12 14:02 [PATCH] KVM: Fix asm constraints for segment loads Avi Kivity
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