From: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
Adding new command line option "amd-iommu=verbose" to allow verbose print out
in dmesg.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
---
drivers/iommu/amd_iommu_init.c | 4 ++++
drivers/iommu/amd_iommu_types.h | 2 ++
2 files changed, 6 insertions(+)
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index e3c2d74..1c8770e 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -157,6 +157,8 @@ bool amd_iommu_v2_present __read_mostly;
bool amd_iommu_force_isolation __read_mostly;
+bool amd_iommu_verbose __read_mostly;
+
/*
* List of protection domains - used during resume
*/
@@ -2092,6 +2094,8 @@ static int __init parse_amd_iommu_options(char *str)
amd_iommu_disabled = true;
if (strncmp(str, "force_isolation", 15) == 0)
amd_iommu_force_isolation = true;
+ if (strncmp(str, "verbose", 7) == 0)
+ amd_iommu_verbose = true;
}
return 1;
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index e38ab43..9ade4f9 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -694,6 +694,8 @@ extern bool amd_iommu_v2_present;
extern bool amd_iommu_force_isolation;
+extern bool amd_iommu_verbose;
+
/* Max levels of glxval supported */
extern int amd_iommu_max_glx_val;
--
1.7.10.4
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