[Xen-devel] [PATCH v3] xen/arm: map_dev_mmio_region: printk should be ratelimited

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

The function map_dev_mmio_region is used in a hypercall. Therefore all
printks should be ratelimited to avoid a malicious guest flooding the
console.

Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
v3: update commit message
---
 xen/arch/arm/p2m.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
index 0011708..db21433 100644
--- a/xen/arch/arm/p2m.c
+++ b/xen/arch/arm/p2m.c
@@ -1284,7 +1284,7 @@ int map_dev_mmio_region(struct domain *d,
     res = map_mmio_regions(d, start_gfn, nr, mfn);
     if ( res < 0 )
     {
-        printk(XENLOG_ERR "Unable to map [%#lx - %#lx] in Dom%d\n",
+        printk(XENLOG_G_ERR "Unable to map [%#lx - %#lx] in Dom%d\n",
                start_gfn, start_gfn + nr - 1, d->domain_id);
         return res;
     }
-- 
2.0.4



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