linux-kernel - [PATCH 1/2] export cpu

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Message-ID: <20090810185302.GB13924@redhat.com>
Date:	Mon, 10 Aug 2009 21:53:02 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org, mingo@...e.hu
Subject: [PATCH 1/2] export cpu_tlbstate to modules

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 <mst@...hat.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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