These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 13 insertions, 10 deletions

diff --git a/kernel/arch/powerpc/mm/hash_utils_64.c b/kernel/arch/powerpc/mm/hash_utils_64.c
index fda236f90..7f9616f7c 100644
--- a/kernel/arch/powerpc/mm/hash_utils_64.c
+++ b/kernel/arch/powerpc/mm/hash_utils_64.c
@@ -57,6 +57,7 @@
 #include <asm/fadump.h>
 #include <asm/firmware.h>
 #include <asm/tm.h>
+#include <asm/trace.h>
 
 #ifdef DEBUG
 #define DBG(fmt...) udbg_printf(fmt)
@@ -639,7 +640,7 @@ extern u32 ht64_call_hpte_updatepp[];
 
 static void __init htab_finish_init(void)
 {
-#ifdef CONFIG_PPC_HAS_HASH_64K
+#ifdef CONFIG_PPC_64K_PAGES
 	patch_branch(ht64_call_hpte_insert1,
 		ppc_function_entry(ppc_md.hpte_insert),
 		BRANCH_SET_LINK);
@@ -652,7 +653,7 @@ static void __init htab_finish_init(void)
 	patch_branch(ht64_call_hpte_updatepp,
 		ppc_function_entry(ppc_md.hpte_updatepp),
 		BRANCH_SET_LINK);
-#endif /* CONFIG_PPC_HAS_HASH_64K */
+#endif /* CONFIG_PPC_64K_PAGES */
 
 	patch_branch(htab_call_hpte_insert1,
 		ppc_function_entry(ppc_md.hpte_insert),
@@ -993,6 +994,7 @@ int hash_page_mm(struct mm_struct *mm, unsigned long ea,
 		 unsigned long access, unsigned long trap,
 		 unsigned long flags)
 {
+	bool is_thp;
 	enum ctx_state prev_state = exception_enter();
 	pgd_t *pgdir;
 	unsigned long vsid;
@@ -1004,6 +1006,7 @@ int hash_page_mm(struct mm_struct *mm, unsigned long ea,
 
 	DBG_LOW("hash_page(ea=%016lx, access=%lx, trap=%lx\n",
 		ea, access, trap);
+	trace_hash_fault(ea, access, trap);
 
 	/* Get region & vsid */
  	switch (REGION_ID(ea)) {
@@ -1066,7 +1069,7 @@ int hash_page_mm(struct mm_struct *mm, unsigned long ea,
 #endif /* CONFIG_PPC_64K_PAGES */
 
 	/* Get PTE and page size from page tables */
-	ptep = __find_linux_pte_or_hugepte(pgdir, ea, &hugeshift);
+	ptep = __find_linux_pte_or_hugepte(pgdir, ea, &is_thp, &hugeshift);
 	if (ptep == NULL || !pte_present(*ptep)) {
 		DBG_LOW(" no PTE !\n");
 		rc = 1;
@@ -1086,7 +1089,7 @@ int hash_page_mm(struct mm_struct *mm, unsigned long ea,
 	}
 
 	if (hugeshift) {
-		if (pmd_trans_huge(*(pmd_t *)ptep))
+		if (is_thp)
 			rc = __hash_page_thp(ea, access, vsid, (pmd_t *)ptep,
 					     trap, flags, ssize, psize);
 #ifdef CONFIG_HUGETLB_PAGE
@@ -1149,12 +1152,12 @@ int hash_page_mm(struct mm_struct *mm, unsigned long ea,
 		check_paca_psize(ea, mm, psize, user_region);
 #endif /* CONFIG_PPC_64K_PAGES */
 
-#ifdef CONFIG_PPC_HAS_HASH_64K
+#ifdef CONFIG_PPC_64K_PAGES
 	if (psize == MMU_PAGE_64K)
 		rc = __hash_page_64K(ea, access, vsid, ptep, trap,
 				     flags, ssize);
 	else
-#endif /* CONFIG_PPC_HAS_HASH_64K */
+#endif /* CONFIG_PPC_64K_PAGES */
 	{
 		int spp = subpage_protection(mm, ea);
 		if (access & spp)
@@ -1241,7 +1244,7 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
 	 * THP pages use update_mmu_cache_pmd. We don't do
 	 * hash preload there. Hence can ignore THP here
 	 */
-	ptep = find_linux_pte_or_hugepte(pgdir, ea, &hugepage_shift);
+	ptep = find_linux_pte_or_hugepte(pgdir, ea, NULL, &hugepage_shift);
 	if (!ptep)
 		goto out_exit;
 
@@ -1262,12 +1265,12 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
 		update_flags |= HPTE_LOCAL_UPDATE;
 
 	/* Hash it in */
-#ifdef CONFIG_PPC_HAS_HASH_64K
+#ifdef CONFIG_PPC_64K_PAGES
 	if (mm->context.user_psize == MMU_PAGE_64K)
 		rc = __hash_page_64K(ea, access, vsid, ptep, trap,
 				     update_flags, ssize);
 	else
-#endif /* CONFIG_PPC_HAS_HASH_64K */
+#endif /* CONFIG_PPC_64K_PAGES */
 		rc = __hash_page_4K(ea, access, vsid, ptep, trap, update_flags,
 				    ssize, subpage_protection(mm, ea));
 
@@ -1475,7 +1478,7 @@ static void kernel_map_linear_page(unsigned long vaddr, unsigned long lmi)
 	unsigned long hash;
 	unsigned long vsid = get_kernel_vsid(vaddr, mmu_kernel_ssize);
 	unsigned long vpn = hpt_vpn(vaddr, vsid, mmu_kernel_ssize);
-	unsigned long mode = htab_convert_pte_flags(PAGE_KERNEL);
+	unsigned long mode = htab_convert_pte_flags(pgprot_val(PAGE_KERNEL));
 	long ret;
 
 	hash = hpt_hash(vpn, PAGE_SHIFT, mmu_kernel_ssize);