The commit ("iommu/mediatek: Enlarge the validate PA range for 4GB mode") introduce the following build warning while ARCH=arm: drivers/iommu/mtk_iommu.c: In function 'mtk_iommu_iova_to_phys': include/linux/bitops.h:6:24: warning: left shift count >= width of type [-Wshift-count-overflow] #define BIT(nr) (1UL << (nr)) ^ >> drivers/iommu/mtk_iommu.c:407:9: note: in expansion of macro 'BIT' pa |= BIT(32); drivers/iommu/mtk_iommu.c: In function 'mtk_iommu_probe': include/linux/bitops.h:6:24: warning: left shift count >= width of type [-Wshift-count-overflow] #define BIT(nr) (1UL << (nr)) ^ drivers/iommu/mtk_iommu.c:589:35: note: in expansion of macro 'BIT' data->enable_4GB = !!(max_pfn > (BIT(32) >> PAGE_SHIFT)); Use BIT_ULL instead of BIT. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Yong Wu <yong.wu@mediatek.com> Signed-off-by: Joerg Roedel <jroedel@suse.de> |
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arch | ||
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certs | ||
crypto | ||
drivers | ||
firmware | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.cocciconfig | ||
.get_maintainer.ignore | ||
.gitattributes | ||
.gitignore | ||
.mailmap | ||
COPYING | ||
CREDITS | ||
Kbuild | ||
Kconfig | ||
MAINTAINERS | ||
Makefile | ||
README |
README
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.