---

yaml --- r: 349145 b: refs/heads/master c: 210b184 h: refs/heads/master i: 349143: fe74c76 v: v3
git-mirror · Jan 19, 2013 · 1a8a715 · 1a8a715
1 parent 0b4f72f
commit 1a8a715
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Showing 6 changed files with 20 additions and 15 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d01723479e6a6c70c83295f7847477a016d5e14a
+refs/heads/master: 210b1847b32951f52d19df229972399e5b987de2
diff --git a/trunk/arch/arm/kernel/head.S b/trunk/arch/arm/kernel/head.S
@@ -246,13 +246,16 @@ __create_page_tables:
 
 	/*
 	 * Then map boot params address in r2 if specified.
+	 * We map 2 sections in case the ATAGs/DTB crosses a section boundary.
 	 */
 	mov	r0, r2, lsr #SECTION_SHIFT
 	movs	r0, r0, lsl #SECTION_SHIFT
 	subne	r3, r0, r8
 	addne	r3, r3, #PAGE_OFFSET
 	addne	r3, r4, r3, lsr #(SECTION_SHIFT - PMD_ORDER)
 	orrne	r6, r7, r0
+	strne	r6, [r3], #1 << PMD_ORDER
+	addne	r6, r6, #1 << SECTION_SHIFT
 	strne	r6, [r3]
 
 #ifdef CONFIG_DEBUG_LL

diff --git a/trunk/arch/arm/mm/dma-mapping.c b/trunk/arch/arm/mm/dma-mapping.c
@@ -774,25 +774,27 @@ static void dma_cache_maint_page(struct page *page, unsigned long offset,
 	size_t size, enum dma_data_direction dir,
 	void (*op)(const void *, size_t, int))
 {
+	unsigned long pfn;
+	size_t left = size;
+
+	pfn = page_to_pfn(page) + offset / PAGE_SIZE;
+	offset %= PAGE_SIZE;
+
 	/*
 	 * A single sg entry may refer to multiple physically contiguous
 	 * pages.  But we still need to process highmem pages individually.
 	 * If highmem is not configured then the bulk of this loop gets
 	 * optimized out.
 	 */
-	size_t left = size;
 	do {
 		size_t len = left;
 		void *vaddr;
 
+		page = pfn_to_page(pfn);
+
 		if (PageHighMem(page)) {
-			if (len + offset > PAGE_SIZE) {
-				if (offset >= PAGE_SIZE) {
-					page += offset / PAGE_SIZE;
-					offset %= PAGE_SIZE;
-				}
+			if (len + offset > PAGE_SIZE)
 				len = PAGE_SIZE - offset;
-			}
 			vaddr = kmap_high_get(page);
 			if (vaddr) {
 				vaddr += offset;
@@ -809,7 +811,7 @@ static void dma_cache_maint_page(struct page *page, unsigned long offset,
 			op(vaddr, len, dir);
 		}
 		offset = 0;
-		page++;
+		pfn++;
 		left -= len;
 	} while (left);
 }

diff --git a/trunk/arch/arm/mm/mmu.c b/trunk/arch/arm/mm/mmu.c
@@ -283,7 +283,7 @@ static struct mem_type mem_types[] = {
 	},
 	[MT_MEMORY_SO] = {
 		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
-				L_PTE_MT_UNCACHED,
+				L_PTE_MT_UNCACHED | L_PTE_XN,
 		.prot_l1   = PMD_TYPE_TABLE,
 		.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_S |
 				PMD_SECT_UNCACHED | PMD_SECT_XN,

diff --git a/trunk/arch/arm/vfp/entry.S b/trunk/arch/arm/vfp/entry.S
@@ -22,7 +22,7 @@
 @  IRQs disabled.
 @
 ENTRY(do_vfp)
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPT_COUNT
 	ldr	r4, [r10, #TI_PREEMPT]	@ get preempt count
 	add	r11, r4, #1		@ increment it
 	str	r11, [r10, #TI_PREEMPT]
@@ -35,7 +35,7 @@ ENTRY(do_vfp)
 ENDPROC(do_vfp)
 
 ENTRY(vfp_null_entry)
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPT_COUNT
 	get_thread_info	r10
 	ldr	r4, [r10, #TI_PREEMPT]	@ get preempt count
 	sub	r11, r4, #1		@ decrement it
@@ -53,7 +53,7 @@ ENDPROC(vfp_null_entry)
 
 	__INIT
 ENTRY(vfp_testing_entry)
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPT_COUNT
 	get_thread_info	r10
 	ldr	r4, [r10, #TI_PREEMPT]	@ get preempt count
 	sub	r11, r4, #1		@ decrement it

diff --git a/trunk/arch/arm/vfp/vfphw.S b/trunk/arch/arm/vfp/vfphw.S
@@ -168,7 +168,7 @@ vfp_hw_state_valid:
 					@ else it's one 32-bit instruction, so
 					@ always subtract 4 from the following
 					@ instruction address.
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPT_COUNT
 	get_thread_info	r10
 	ldr	r4, [r10, #TI_PREEMPT]	@ get preempt count
 	sub	r11, r4, #1		@ decrement it
@@ -192,7 +192,7 @@ look_for_VFP_exceptions:
 	@ not recognised by VFP
 
 	DBGSTR	"not VFP"
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPT_COUNT
 	get_thread_info	r10
 	ldr	r4, [r10, #TI_PREEMPT]	@ get preempt count
 	sub	r11, r4, #1		@ decrement it