4 files changed, 11 insertions, 40 deletions

diff --git a/arch/xtensa/mm/cache.c b/arch/xtensa/mm/cache.c
index 085b8c77b9d9..19e5a478a7e8 100644
--- a/arch/xtensa/mm/cache.c
+++ b/arch/xtensa/mm/cache.c
@@ -81,13 +81,8 @@ static inline void kmap_invalidate_coherent(struct page *page,
 static inline void *coherent_kvaddr(struct page *page, unsigned long base,
 				    unsigned long vaddr, unsigned long *paddr)
 {
-	if (PageHighMem(page) || !DCACHE_ALIAS_EQ(page_to_phys(page), vaddr)) {
-		*paddr = page_to_phys(page);
-		return (void *)(base + (vaddr & DCACHE_ALIAS_MASK));
-	} else {
-		*paddr = 0;
-		return page_to_virt(page);
-	}
+	*paddr = page_to_phys(page);
+	return (void *)(base + (vaddr & DCACHE_ALIAS_MASK));
 }
 
 void clear_user_highpage(struct page *page, unsigned long vaddr)
diff --git a/arch/xtensa/mm/fault.c b/arch/xtensa/mm/fault.c
index 7666408ce12a..95a74890c7e9 100644
--- a/arch/xtensa/mm/fault.c
+++ b/arch/xtensa/mm/fault.c
@@ -112,8 +112,11 @@ good_area:
 	 */
 	fault = handle_mm_fault(vma, address, flags, regs);
 
-	if (fault_signal_pending(fault, regs))
+	if (fault_signal_pending(fault, regs)) {
+		if (!user_mode(regs))
+			goto bad_page_fault;
 		return;
+	}
 
 	if (unlikely(fault & VM_FAULT_ERROR)) {
 		if (fault & VM_FAULT_OOM)
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 2daeba9e454e..6a32b2cf2718 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -119,7 +119,6 @@ void __init mem_init(void)
 
 	memblock_free_all();
 
-	mem_init_print_info(NULL);
 	pr_info("virtual kernel memory layout:\n"
 #ifdef CONFIG_KASAN
 		"    kasan   : 0x%08lx - 0x%08lx  (%5lu MB)\n"
diff --git a/arch/xtensa/mm/misc.S b/arch/xtensa/mm/misc.S
index 25cd67debee6..0527bf6e3211 100644
--- a/arch/xtensa/mm/misc.S
+++ b/arch/xtensa/mm/misc.S
@@ -118,20 +118,13 @@ ENTRY(clear_page_alias)
 
 	abi_entry_default
 
-	/* Skip setting up a temporary DTLB if not aliased low page. */
-
 	movi	a5, PAGE_OFFSET
-	movi	a6, 0
-	beqz	a3, 1f
-
-	/* Setup a temporary DTLB for the addr. */
-
 	addi	a6, a3, (PAGE_KERNEL | _PAGE_HW_WRITE)
 	mov	a4, a2
 	wdtlb	a6, a2
 	dsync
 
-1:	movi	a3, 0
+	movi	a3, 0
 	__loopi	a2, a7, PAGE_SIZE, 32
 	s32i	a3, a2, 0
 	s32i	a3, a2, 4
@@ -143,12 +136,9 @@ ENTRY(clear_page_alias)
 	s32i	a3, a2, 28
 	__endla	a2, a7, 32
 
-	bnez	a6, 1f
-	abi_ret_default
-
-	/* We need to invalidate the temporary idtlb entry, if any. */
+	/* We need to invalidate the temporary dtlb entry. */
 
-1:	idtlb	a4
+	idtlb	a4
 	dsync
 
 	abi_ret_default
@@ -166,22 +156,12 @@ ENTRY(copy_page_alias)
 
 	abi_entry_default
 
-	/* Skip setting up a temporary DTLB for destination if not aliased. */
-
-	movi	a6, 0
-	movi	a7, 0
-	beqz	a4, 1f
-
 	/* Setup a temporary DTLB for destination. */
 
 	addi	a6, a4, (PAGE_KERNEL | _PAGE_HW_WRITE)
 	wdtlb	a6, a2
 	dsync
 
-	/* Skip setting up a temporary DTLB for source if not aliased. */
-
-1:	beqz	a5, 1f
-
 	/* Setup a temporary DTLB for source. */
 
 	addi	a7, a5, PAGE_KERNEL
@@ -219,17 +199,11 @@ ENTRY(copy_page_alias)
 
 	/* We need to invalidate any temporary mapping! */
 
-	bnez	a6, 1f
-	bnez	a7, 2f
-	abi_ret_default
-
-1:	addi	a2, a2, -PAGE_SIZE
+	addi	a2, a2, -PAGE_SIZE
 	idtlb	a2
 	dsync
-	bnez	a7, 2f
-	abi_ret_default
 
-2:	addi	a3, a3, -PAGE_SIZE+1
+	addi	a3, a3, -PAGE_SIZE+1
 	idtlb	a3
 	dsync