summaryrefslogtreecommitdiffstats
path: root/arch/x86/mm
diff options
context:
space:
mode:
authorJoerg Roedel <jroedel@suse.de>2019-07-19 20:46:50 +0200
committerThomas Gleixner <tglx@linutronix.de>2019-07-22 10:18:30 +0200
commit51b75b5b563a2637f9d8dc5bd02a31b2ff9e5ea0 (patch)
tree07ee309627faa656fd971c9112bd253b3f06f5a0 /arch/x86/mm
parent5f9e832c137075045d15cd6899ab0505cfb2ca4b (diff)
downloadlinux-51b75b5b563a2637f9d8dc5bd02a31b2ff9e5ea0.tar.bz2
x86/mm: Check for pfn instead of page in vmalloc_sync_one()
Do not require a struct page for the mapped memory location because it might not exist. This can happen when an ioremapped region is mapped with 2MB pages. Fixes: 5d72b4fba40ef ('x86, mm: support huge I/O mapping capability I/F') Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lkml.kernel.org/r/20190719184652.11391-2-joro@8bytes.org
Diffstat (limited to 'arch/x86/mm')
-rw-r--r--arch/x86/mm/fault.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 6c46095cd0d9..e64173db4970 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -183,7 +183,7 @@ static inline pmd_t *vmalloc_sync_one(pgd_t *pgd, unsigned long address)
if (!pmd_present(*pmd))
set_pmd(pmd, *pmd_k);
else
- BUG_ON(pmd_page(*pmd) != pmd_page(*pmd_k));
+ BUG_ON(pmd_pfn(*pmd) != pmd_pfn(*pmd_k));
return pmd_k;
}