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Subject[PATCH] x86/fpu: Fix get_xsave_addr which returns error pointer to KVM
Date
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@intel.com>
---
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


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