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[Zesty,6/6] powerpc/mm/hugetlb: Allow runtime allocation of 16G.

Message ID 20171017105253.43146-7-victora@linux.vnet.ibm.com
State New
Headers show
Series Allow memory-hotplug with 16G hugepages | expand

Commit Message

Victor Aoqui Oct. 17, 2017, 10:52 a.m. UTC 
From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>

BugLink: http://bugs.launchpad.net/bugs/1724120

Now that we have GIGANTIC_PAGE enabled on powerpc, use this for 16G hugepages
with hash translation mode. Depending on the total system memory we have, we may
be able to allocate 16G hugepages runtime. This also remove the hugetlb setup
difference between hash/radix translation mode.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
(cherry picked from commit 4ae279c2c96ab38a78b954d218790a8f6db714e5)
Signed-off-by: Victor Aoqui <victora@linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/book3s/64/hugetlb.h | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
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Patch

diff --git a/arch/powerpc/include/asm/book3s/64/hugetlb.h b/arch/powerpc/include/asm/book3s/64/hugetlb.h
index 3adc49a74a0d..c12f524df3d4 100644
--- a/arch/powerpc/include/asm/book3s/64/hugetlb.h
+++ b/arch/powerpc/include/asm/book3s/64/hugetlb.h
@@ -54,9 +54,7 @@  static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
 #ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE
 static inline bool gigantic_page_supported(void)
 {
-	if (radix_enabled())
-		return true;
-	return false;
+	return true;
 }
 #endif