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authorSteven Price <steven.price@arm.com>2020-06-02 07:50:01 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-02 20:59:10 +0300
commit99395ee3f7b4accc3a16a6aa4c2abb3774fc33ca (patch)
treea0531fca9b7eac6bcb97a32f6ff25c83c0e627c6 /include/linux/ptdump.h
parent1494e0c38ee903e83aefb58caf54a9217273d49a (diff)
downloadlinux-99395ee3f7b4accc3a16a6aa4c2abb3774fc33ca.tar.xz
mm: ptdump: expand type of 'val' in note_page()
The page table entry is passed in the 'val' argument to note_page(), however this was previously an "unsigned long" which is fine on 64-bit platforms. But for 32 bit x86 it is not always big enough to contain a page table entry which may be 64 bits. Change the type to u64 to ensure that it is always big enough. [akpm@linux-foundation.org: fix riscv] Reported-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Steven Price <steven.price@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/20200521152308.33096-3-steven.price@arm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/ptdump.h')
-rw-r--r--include/linux/ptdump.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/ptdump.h b/include/linux/ptdump.h
index ac01502763bf..2a3a95586425 100644
--- a/include/linux/ptdump.h
+++ b/include/linux/ptdump.h
@@ -13,7 +13,7 @@ struct ptdump_range {
struct ptdump_state {
/* level is 0:PGD to 4:PTE, or -1 if unknown */
void (*note_page)(struct ptdump_state *st, unsigned long addr,
- int level, unsigned long val);
+ int level, u64 val);
void (*effective_prot)(struct ptdump_state *st, int level, u64 val);
const struct ptdump_range *range;
};