sparc64: Add support for 2G hugepages

Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc/include/asm/page_64.h b/arch/sparc/include/asm/page_64.h
index f294dd42fc7d3833ccc5b92fa6077e3b7d869d26..5961b2d8398a9cdfa359483f009f0c30cfcca9a8 100644 (file)
--- a/arch/sparc/include/asm/page_64.h
+++ b/arch/sparc/include/asm/page_64.h
@@ -17,6 +17,7 @@
 
 #define HPAGE_SHIFT            23
 #define REAL_HPAGE_SHIFT       22
+#define HPAGE_2GB_SHIFT                31
 #define HPAGE_256MB_SHIFT      28
 #define HPAGE_64K_SHIFT                16
 #define REAL_HPAGE_SIZE                (_AC(1,UL) << REAL_HPAGE_SHIFT)
@@ -27,7 +28,7 @@
 #define HUGETLB_PAGE_ORDER     (HPAGE_SHIFT - PAGE_SHIFT)
 #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
 #define REAL_HPAGE_PER_HPAGE   (_AC(1,UL) << (HPAGE_SHIFT - REAL_HPAGE_SHIFT))
-#define HUGE_MAX_HSTATE                3
+#define HUGE_MAX_HSTATE                4
 #endif
 
 #ifndef __ASSEMBLY__

diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
index 30168500603e82ab4023bee12acee1f4d1ab8c24..ee5273ad918de6302cb0f6644b2a4179f8c26351 100644 (file)
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -143,6 +143,10 @@ static pte_t sun4v_hugepage_shift_to_tte(pte_t entry, unsigned int shift)
        pte_val(entry) = pte_val(entry) & ~_PAGE_SZALL_4V;
 
        switch (shift) {
+       case HPAGE_2GB_SHIFT:
+               hugepage_size = _PAGE_SZ2GB_4V;
+               pte_val(entry) |= _PAGE_PMD_HUGE;
+               break;
        case HPAGE_256MB_SHIFT:
                hugepage_size = _PAGE_SZ256MB_4V;
                pte_val(entry) |= _PAGE_PMD_HUGE;
@@ -183,6 +187,9 @@ static unsigned int sun4v_huge_tte_to_shift(pte_t entry)
        unsigned int shift;
 
        switch (tte_szbits) {
+       case _PAGE_SZ2GB_4V:
+               shift = HPAGE_2GB_SHIFT;
+               break;
        case _PAGE_SZ256MB_4V:
                shift = HPAGE_256MB_SHIFT;
                break;

diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index ccd4553289899ee2e585e409189206f67c7e77f2..3328043e990c2b61e1994e439383f22853d2431d 100644 (file)
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -337,6 +337,10 @@ static int __init setup_hugepagesz(char *string)
        hugepage_shift = ilog2(hugepage_size);
 
        switch (hugepage_shift) {
+       case HPAGE_2GB_SHIFT:
+               hv_pgsz_mask = HV_PGSZ_MASK_2GB;
+               hv_pgsz_idx = HV_PGSZ_IDX_2GB;
+               break;
        case HPAGE_256MB_SHIFT:
                hv_pgsz_mask = HV_PGSZ_MASK_256MB;
                hv_pgsz_idx = HV_PGSZ_IDX_256MB;