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| author | Arnd Bergmann <arnd@arndb.de> | 2024-02-19 19:16:01 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-02-21 10:28:48 +0100 |
| commit | 4578f989ed6b77c14af86bb882cc5ff0a46a69eb (patch) | |
| tree | 47471470f7829ce1117ebc49a3a7363fec22dc14 | |
| parent | 1f0198fce68340e0da2d438f4ea9fc20d2c958da (diff) | |
| download | linux-4578f989ed6b77c14af86bb882cc5ff0a46a69eb.tar.gz | |
iommu/vt-d: Fix constant-out-of-range warning
On 32-bit builds, the vt-d driver causes a warning with clang:
drivers/iommu/intel/nested.c:112:13: error: result of comparison of constant 18446744073709551615 with expression of type 'unsigned long' is always false [-Werror,-Wtautological-constant-out-of-range-compare]
112 | if (npages == U64_MAX)
| ~~~~~~ ^ ~~~~~~~
Make the variable a 64-bit type, which matches both the caller and the
use anyway.
Fixes: f6f3721244a8 ("iommu/vt-d: Add iotlb flush for nested domain")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20240213095832.455245-1-arnd@kernel.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
| -rw-r--r-- | drivers/iommu/intel/nested.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/intel/nested.c b/drivers/iommu/intel/nested.c index d5af5925a31c6e..a7d68f3d518acd 100644 --- a/drivers/iommu/intel/nested.c +++ b/drivers/iommu/intel/nested.c @@ -103,7 +103,7 @@ static void nested_flush_dev_iotlb(struct dmar_domain *domain, u64 addr, } static void intel_nested_flush_cache(struct dmar_domain *domain, u64 addr, - unsigned long npages, bool ih) + u64 npages, bool ih) { struct iommu_domain_info *info; unsigned int mask; |