vhost net module wants to do copy to/from user from a kernel thread,
which needs switch_mm (like what fs/aio has).
export cpu_tlbstate to make this possible
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
---
arch/x86/mm/tlb.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 821e970..e33a5f0 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -13,6 +13,7 @@
DEFINE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate)
= { &init_mm, 0, };
+EXPORT_PER_CPU_SYMBOL_GPL(cpu_tlbstate);
/*
* Smarter SMP flushing macros.
--
1.6.2.5
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