[PATCH] x86/fpu: Fix get_xsave_addr which returns error pointer to KVM

[Huaitong Han]

when KVM uses the get_xsave_addr, xsave parameter belongs to guest vcpu, if
xsave is replaced with current task (host) xsave, get_xsave_addr will return error
xsave addr to KVM.

Signed-off-by: Huaitong Han <huaitong.han@xxxxxxxxx>
---
 arch/x86/kernel/fpu/xstate.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index 62fc001..2c4ac07 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -402,7 +402,6 @@ void *get_xsave_addr(struct xregs_state *xsave, int xstate_feature)
 	if (!boot_cpu_has(X86_FEATURE_XSAVE))
 		return NULL;
 
-	xsave = &current->thread.fpu.state.xsave;
 	/*
 	 * We should not ever be requesting features that we
 	 * have not enabled.  Remember that pcntxt_mask is
-- 
2.4.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/