From 4d66bcc7cf762e82703b94d416245d4a216c79ae Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Tue, 14 Apr 2015 15:45:45 -0700 Subject: ia64: expose number of page table levels on Kconfig level We would want to use number of page table level to define mm_struct. Let's expose it as CONFIG_PGTABLE_LEVELS. We need to define PGTABLE_LEVELS before sourcing init/Kconfig: arch/Kconfig will define default value and it's sourced from init/Kconfig. Signed-off-by: Kirill A. Shutemov Cc: Tony Luck Cc: Fenghua Yu Tested-by: Guenter Roeck Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ia64/kernel/ivt.S | 12 ++++++------ arch/ia64/kernel/machine_kexec.c | 4 ++-- 2 files changed, 8 insertions(+), 8 deletions(-) (limited to 'arch/ia64/kernel') diff --git a/arch/ia64/kernel/ivt.S b/arch/ia64/kernel/ivt.S index 18e794a57248..e42bf7a913f3 100644 --- a/arch/ia64/kernel/ivt.S +++ b/arch/ia64/kernel/ivt.S @@ -146,7 +146,7 @@ ENTRY(vhpt_miss) (p6) dep r17=r18,r19,3,(PAGE_SHIFT-3) // r17=pgd_offset for region 5 (p7) dep r17=r18,r17,3,(PAGE_SHIFT-6) // r17=pgd_offset for region[0-4] cmp.eq p7,p6=0,r21 // unused address bits all zeroes? -#ifdef CONFIG_PGTABLE_4 +#if CONFIG_PGTABLE_LEVELS == 4 shr.u r28=r22,PUD_SHIFT // shift pud index into position #else shr.u r18=r22,PMD_SHIFT // shift pmd index into position @@ -155,7 +155,7 @@ ENTRY(vhpt_miss) ld8 r17=[r17] // get *pgd (may be 0) ;; (p7) cmp.eq p6,p7=r17,r0 // was pgd_present(*pgd) == NULL? -#ifdef CONFIG_PGTABLE_4 +#if CONFIG_PGTABLE_LEVELS == 4 dep r28=r28,r17,3,(PAGE_SHIFT-3) // r28=pud_offset(pgd,addr) ;; shr.u r18=r22,PMD_SHIFT // shift pmd index into position @@ -222,13 +222,13 @@ ENTRY(vhpt_miss) */ ld8 r25=[r21] // read *pte again ld8 r26=[r17] // read *pmd again -#ifdef CONFIG_PGTABLE_4 +#if CONFIG_PGTABLE_LEVELS == 4 ld8 r19=[r28] // read *pud again #endif cmp.ne p6,p7=r0,r0 ;; cmp.ne.or.andcm p6,p7=r26,r20 // did *pmd change -#ifdef CONFIG_PGTABLE_4 +#if CONFIG_PGTABLE_LEVELS == 4 cmp.ne.or.andcm p6,p7=r19,r29 // did *pud change #endif mov r27=PAGE_SHIFT<<2 @@ -476,7 +476,7 @@ ENTRY(nested_dtlb_miss) (p6) dep r17=r18,r19,3,(PAGE_SHIFT-3) // r17=pgd_offset for region 5 (p7) dep r17=r18,r17,3,(PAGE_SHIFT-6) // r17=pgd_offset for region[0-4] cmp.eq p7,p6=0,r21 // unused address bits all zeroes? -#ifdef CONFIG_PGTABLE_4 +#if CONFIG_PGTABLE_LEVELS == 4 shr.u r18=r22,PUD_SHIFT // shift pud index into position #else shr.u r18=r22,PMD_SHIFT // shift pmd index into position @@ -487,7 +487,7 @@ ENTRY(nested_dtlb_miss) (p7) cmp.eq p6,p7=r17,r0 // was pgd_present(*pgd) == NULL? dep r17=r18,r17,3,(PAGE_SHIFT-3) // r17=p[u|m]d_offset(pgd,addr) ;; -#ifdef CONFIG_PGTABLE_4 +#if CONFIG_PGTABLE_LEVELS == 4 (p7) ld8 r17=[r17] // get *pud (may be 0) shr.u r18=r22,PMD_SHIFT // shift pmd index into position ;; diff --git a/arch/ia64/kernel/machine_kexec.c b/arch/ia64/kernel/machine_kexec.c index 5151a649c96b..b72cd7a07222 100644 --- a/arch/ia64/kernel/machine_kexec.c +++ b/arch/ia64/kernel/machine_kexec.c @@ -156,9 +156,9 @@ void arch_crash_save_vmcoreinfo(void) VMCOREINFO_OFFSET(node_memblk_s, start_paddr); VMCOREINFO_OFFSET(node_memblk_s, size); #endif -#ifdef CONFIG_PGTABLE_3 +#if CONFIG_PGTABLE_LEVELS == 3 VMCOREINFO_CONFIG(PGTABLE_3); -#elif defined(CONFIG_PGTABLE_4) +#elif CONFIG_PGTABLE_LEVELS == 4 VMCOREINFO_CONFIG(PGTABLE_4); #endif } -- cgit v1.2.3