From: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Mon, 8 May 2017 16:02:09 +0000 (+0000)
Subject: x86/tlb: Don't use locked operations in tlbflush_filter()
X-Git-Tag: archive/raspbian/4.11.1-1+rpi1~1^2~66^2~2121
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=ad0341c712fe5827a64bdfd191e018be345b126f;p=xen.git

x86/tlb: Don't use locked operations in tlbflush_filter()

All passed cpumask_t's are context-local and not at risk of concurrent
updates.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
---

diff --git a/xen/include/asm-x86/flushtlb.h b/xen/include/asm-x86/flushtlb.h
index 8b7adef7c5..aa86ea2f3e 100644
--- a/xen/include/asm-x86/flushtlb.h
+++ b/xen/include/asm-x86/flushtlb.h
@@ -55,7 +55,7 @@ static inline void tlbflush_filter(cpumask_t *mask, uint32_t page_timestamp)
 
     for_each_cpu ( cpu, mask )
         if ( !NEED_FLUSH(per_cpu(tlbflush_time, cpu), page_timestamp) )
-            cpumask_clear_cpu(cpu, mask);
+            __cpumask_clear_cpu(cpu, mask);
 }
 
 void new_tlbflush_clock_period(void);