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authorSteven Price <steven.price@arm.com>2020-06-01 21:50:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-02 10:59:10 -0700
commit99395ee3f7b4accc3a16a6aa4c2abb3774fc33ca (patch)
treea0531fca9b7eac6bcb97a32f6ff25c83c0e627c6 /arch/x86/mm
parent1494e0c38ee903e83aefb58caf54a9217273d49a (diff)
downloadlinux-99395ee3f7b4accc3a16a6aa4c2abb3774fc33ca.tar.bz2
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 'arch/x86/mm')
-rw-r--r--arch/x86/mm/dump_pagetables.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index 33093fdedb02..ea9010113f69 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -273,7 +273,7 @@ static void effective_prot(struct ptdump_state *pt_st, int level, u64 val)
* print what we collected so far.
*/
static void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
- unsigned long val)
+ u64 val)
{
struct pg_state *st = container_of(pt_st, struct pg_state, ptdump);
pgprotval_t new_prot, new_eff;