From: Julien Grall <julien.grall@linaro.org>
Date: Wed, 23 Apr 2014 11:36:56 +0000 (+0100)
Subject: xen/arm: create_xen_entries has to flush TLBs on every CPU
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~5086
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=c670b042d90f337cff110c6b9e079939371e8b3c;p=xen.git

xen/arm: create_xen_entries has to flush TLBs on every CPU

The function create_xen_entries creates mappings in second-level page tables
which is shared between every CPU.

Only flushing TLBs on local processor may result to wrong behaviour
when io{re,un}map is used.

Signed-off-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
index 362bc8d29e..eac228c848 100644
--- a/xen/arch/arm/mm.c
+++ b/xen/arch/arm/mm.c
@@ -845,7 +845,7 @@ static int create_xen_entries(enum xenmap_operation op,
                 BUG();
         }
     }
-    flush_xen_data_tlb_range_va_local(virt, PAGE_SIZE * nr_mfns);
+    flush_xen_data_tlb_range_va(virt, PAGE_SIZE * nr_mfns);
 
     rc = 0;