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iommu/vt-d: Change flags type to unsigned int in binding mm 

commit 2a5054c6e7 upstream.

"flags" passed to intel_svm_bind_mm() is a bit mask and should be
defined as "unsigned int" instead of "int".

Change its type to "unsigned int".

Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
Link: https://lkml.kernel.org/r/1600187413-163670-3-git-send-email-fenghua.yu@intel.com
Signed-off-by: Chen Zhuo <sagazchen@tencent.com>
Signed-off-by: Xinghui Li <korantli@tencent.com>
This commit is contained in:
Fenghua Yu 2020-09-15 09:30:06 -07:00 committed by Jianping Liu
parent 23a7fe8610
commit 03d49a6076
2 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/iommu/intel/svm.c
View File

@ -464,7 +464,8 @@ out:
/* Caller must hold pasid_mutex, mm reference */
static int
intel_svm_bind_mm(struct device *dev, int flags, struct svm_dev_ops *ops,
intel_svm_bind_mm(struct device *dev, unsigned int flags,
struct svm_dev_ops *ops,
struct mm_struct *mm, struct intel_svm_dev **sd)
{
struct intel_iommu *iommu = device_to_iommu(dev, NULL, NULL);
@ -1050,7 +1051,7 @@ intel_svm_bind(struct device *dev, struct mm_struct *mm, void *drvdata)
{
struct iommu_sva *sva = ERR_PTR(-EINVAL);
struct intel_svm_dev *sdev = NULL;
int flags = 0;
unsigned int flags = 0;
int ret;
/*
@ -1059,7 +1060,7 @@ intel_svm_bind(struct device *dev, struct mm_struct *mm, void *drvdata)
* and intel_svm etc.
*/
if (drvdata)
flags = *(int *)drvdata;
flags = *(unsigned int *)drvdata;
mutex_lock(&pasid_mutex);
ret = intel_svm_bind_mm(dev, flags, NULL, mm, &sdev);
if (ret)

2
include/linux/intel-iommu.h
View File

@ -772,7 +772,7 @@ struct intel_svm {
struct mm_struct *mm;
struct intel_iommu *iommu;
int flags;
unsigned int flags;
u32 pasid;
int gpasid; /* In case that guest PASID is different from host PASID */
struct list_head devs;