Revision c45442055dfdeb265cc20c9eeaa9fd11a75fbf51 authored by Arnd Bergmann on 22 February 2016, 21:58:34 UTC, committed by Dan Williams on 24 February 2016, 01:17:20 UTC
A recent bugfix changed pfn_t to always be 64-bit wide, but did not
change the code in pmem.c, which is now broken on 32-bit architectures
as reported by gcc:
In file included from ../drivers/nvdimm/pmem.c:28:0:
drivers/nvdimm/pmem.c: In function 'pmem_alloc':
include/linux/pfn_t.h:15:17: error: large integer implicitly truncated to unsigned type [-Werror=overflow]
#define PFN_DEV (1ULL << (BITS_PER_LONG_LONG - 3))
This changes the intermediate pfn_flags in struct pmem_device to
be 64 bit wide as well, so they can store the flags correctly.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: db78c22230d0 ("mm: fix pfn_t vs highmem")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
1 parent 93f834d
test_module.c
/*
* This module emits "Hello, world" on printk when loaded.
*
* It is designed to be used for basic evaluation of the module loading
* subsystem (for example when validating module signing/verification). It
* lacks any extra dependencies, and will not normally be loaded by the
* system unless explicitly requested by name.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/module.h>
#include <linux/printk.h>
static int __init test_module_init(void)
{
pr_warn("Hello, world\n");
return 0;
}
module_init(test_module_init);
static void __exit test_module_exit(void)
{
pr_warn("Goodbye\n");
}
module_exit(test_module_exit);
MODULE_AUTHOR("Kees Cook <keescook@chromium.org>");
MODULE_LICENSE("GPL");
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