summaryrefslogtreecommitdiff
path: root/mm
diff options
context:
space:
mode:
authorAneesh Kumar K.V <aneesh.kumar@linux.ibm.com>2020-10-15 20:04:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-16 11:11:14 -0700
commit85a144632dcc71f96dcb9172a15d6f71161144d2 (patch)
tree52cdd19cab62150c6694cb0e2a87da509df9c07d /mm
parentcfc5bbc4e75da4e341b86822c3c8ab1f4d804de5 (diff)
mm/debug_vm_pgtables/hugevmap: use the arch helper to identify huge vmap support.
ppc64 supports huge vmap only with radix translation. Hence use arch helper to determine the huge vmap support. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Michael Ellerman <mpe@ellerman.id.au> Link: https://lkml.kernel.org/r/20200902114222.181353-5-aneesh.kumar@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/debug_vm_pgtable.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c
index 00649b47f6e0..4c73e63b4ceb 100644
--- a/mm/debug_vm_pgtable.c
+++ b/mm/debug_vm_pgtable.c
@@ -28,6 +28,7 @@
#include <linux/swapops.h>
#include <linux/start_kernel.h>
#include <linux/sched/mm.h>
+#include <linux/io.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
@@ -206,11 +207,12 @@ static void __init pmd_leaf_tests(unsigned long pfn, pgprot_t prot)
WARN_ON(!pmd_leaf(pmd));
}
+#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
static void __init pmd_huge_tests(pmd_t *pmdp, unsigned long pfn, pgprot_t prot)
{
pmd_t pmd;
- if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
+ if (!arch_ioremap_pmd_supported())
return;
pr_debug("Validating PMD huge\n");
@@ -224,6 +226,9 @@ static void __init pmd_huge_tests(pmd_t *pmdp, unsigned long pfn, pgprot_t prot)
pmd = READ_ONCE(*pmdp);
WARN_ON(!pmd_none(pmd));
}
+#else /* CONFIG_HAVE_ARCH_HUGE_VMAP */
+static void __init pmd_huge_tests(pmd_t *pmdp, unsigned long pfn, pgprot_t prot) { }
+#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */
static void __init pmd_savedwrite_tests(unsigned long pfn, pgprot_t prot)
{
@@ -320,11 +325,12 @@ static void __init pud_leaf_tests(unsigned long pfn, pgprot_t prot)
WARN_ON(!pud_leaf(pud));
}
+#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
static void __init pud_huge_tests(pud_t *pudp, unsigned long pfn, pgprot_t prot)
{
pud_t pud;
- if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
+ if (!arch_ioremap_pud_supported())
return;
pr_debug("Validating PUD huge\n");
@@ -338,6 +344,10 @@ static void __init pud_huge_tests(pud_t *pudp, unsigned long pfn, pgprot_t prot)
pud = READ_ONCE(*pudp);
WARN_ON(!pud_none(pud));
}
+#else /* !CONFIG_HAVE_ARCH_HUGE_VMAP */
+static void __init pud_huge_tests(pud_t *pudp, unsigned long pfn, pgprot_t prot) { }
+#endif /* !CONFIG_HAVE_ARCH_HUGE_VMAP */
+
#else /* !CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */
static void __init pud_basic_tests(unsigned long pfn, pgprot_t prot) { }
static void __init pud_advanced_tests(struct mm_struct *mm,