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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2016-04-29 15:26:25 +0200
committerMichael Ellerman <mpe@ellerman.id.au>2016-05-11 13:53:55 +0200
commit484837601d4dd048d1f8d2cedd39934bb3ad6d59 (patch)
treed42a4ce2e1ccfd344743e71ec803cf1e245a2d1f /arch/powerpc/include
parentpowerpc/mm: Fix vma_mmu_pagesize() for radix (diff)
downloadlinux-484837601d4dd048d1f8d2cedd39934bb3ad6d59.tar.xz
linux-484837601d4dd048d1f8d2cedd39934bb3ad6d59.zip
powerpc/mm: Add radix support for hugetlb
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
-rw-r--r--arch/powerpc/include/asm/book3s/64/hugetlb-radix.h14
-rw-r--r--arch/powerpc/include/asm/hugetlb.h14
2 files changed, 28 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hugetlb-radix.h b/arch/powerpc/include/asm/book3s/64/hugetlb-radix.h
new file mode 100644
index 000000000000..60f47649306f
--- /dev/null
+++ b/arch/powerpc/include/asm/book3s/64/hugetlb-radix.h
@@ -0,0 +1,14 @@
+#ifndef _ASM_POWERPC_BOOK3S_64_HUGETLB_RADIX_H
+#define _ASM_POWERPC_BOOK3S_64_HUGETLB_RADIX_H
+/*
+ * For radix we want generic code to handle hugetlb. But then if we want
+ * both hash and radix to be enabled together we need to workaround the
+ * limitations.
+ */
+void radix__flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
+void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
+extern unsigned long
+radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
+ unsigned long len, unsigned long pgoff,
+ unsigned long flags);
+#endif
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 42814f0567cc..e2d9f4996e5c 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -8,6 +8,8 @@
extern struct kmem_cache *hugepte_cache;
#ifdef CONFIG_PPC_BOOK3S_64
+
+#include <asm/book3s/64/hugetlb-radix.h>
/*
* This should work for other subarchs too. But right now we use the
* new format only for 64bit book3s
@@ -31,7 +33,19 @@ static inline unsigned int hugepd_shift(hugepd_t hpd)
{
return mmu_psize_to_shift(hugepd_mmu_psize(hpd));
}
+static inline void flush_hugetlb_page(struct vm_area_struct *vma,
+ unsigned long vmaddr)
+{
+ if (radix_enabled())
+ return radix__flush_hugetlb_page(vma, vmaddr);
+}
+static inline void __local_flush_hugetlb_page(struct vm_area_struct *vma,
+ unsigned long vmaddr)
+{
+ if (radix_enabled())
+ return radix__local_flush_hugetlb_page(vma, vmaddr);
+}
#else
static inline pte_t *hugepd_page(hugepd_t hpd)