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authorLinus Torvalds <torvalds@linux-foundation.org>2015-01-11 12:44:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-01-11 12:44:10 -0800
commit0cbaed1d8c2493934b86b4ad99b2de9fcce008e8 (patch)
tree31d1fe752641900a8eaa608d6daae3babd01e609
parent505569d208e61ab14f4b87957be0970ab33eb319 (diff)
parent1e3479225acbb7ae048ac30fb7c6090fa7f0df02 (diff)
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King: "Three small fixes from over the Christmas period, and wiring up the new execveat syscall for ARM" * 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: ARM: 8275/1: mm: fix PMD_SECT_RDONLY undeclared compile error ARM: 8253/1: mm: use phys_addr_t type in map_lowmem() for kernel mem region ARM: 8249/1: mm: dump: don't skip regions ARM: wire up execveat syscall
-rw-r--r--arch/arm/include/uapi/asm/unistd.h1
-rw-r--r--arch/arm/kernel/calls.S1
-rw-r--r--arch/arm/mm/dump.c9
-rw-r--r--arch/arm/mm/init.c4
-rw-r--r--arch/arm/mm/mmu.c4
5 files changed, 8 insertions, 11 deletions
diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h
index 705bb7620673..0c3f5a0dafd3 100644
--- a/arch/arm/include/uapi/asm/unistd.h
+++ b/arch/arm/include/uapi/asm/unistd.h
@@ -413,6 +413,7 @@
#define __NR_getrandom (__NR_SYSCALL_BASE+384)
#define __NR_memfd_create (__NR_SYSCALL_BASE+385)
#define __NR_bpf (__NR_SYSCALL_BASE+386)
+#define __NR_execveat (__NR_SYSCALL_BASE+387)
/*
* The following SWIs are ARM private.
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index e51833f8cc38..05745eb838c5 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -396,6 +396,7 @@
CALL(sys_getrandom)
/* 385 */ CALL(sys_memfd_create)
CALL(sys_bpf)
+ CALL(sys_execveat)
#ifndef syscalls_counted
.equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
#define syscalls_counted
diff --git a/arch/arm/mm/dump.c b/arch/arm/mm/dump.c
index 59424937e52b..9fe8e241335c 100644
--- a/arch/arm/mm/dump.c
+++ b/arch/arm/mm/dump.c
@@ -220,9 +220,6 @@ static void note_page(struct pg_state *st, unsigned long addr, unsigned level, u
static const char units[] = "KMGTPE";
u64 prot = val & pg_level[level].mask;
- if (addr < USER_PGTABLES_CEILING)
- return;
-
if (!st->level) {
st->level = level;
st->current_prot = prot;
@@ -308,15 +305,13 @@ static void walk_pgd(struct seq_file *m)
pgd_t *pgd = swapper_pg_dir;
struct pg_state st;
unsigned long addr;
- unsigned i, pgdoff = USER_PGTABLES_CEILING / PGDIR_SIZE;
+ unsigned i;
memset(&st, 0, sizeof(st));
st.seq = m;
st.marker = address_markers;
- pgd += pgdoff;
-
- for (i = pgdoff; i < PTRS_PER_PGD; i++, pgd++) {
+ for (i = 0; i < PTRS_PER_PGD; i++, pgd++) {
addr = i * PGDIR_SIZE;
if (!pgd_none(*pgd)) {
walk_pud(&st, pgd, addr);
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 98ad9c79ea0e..2495c8cb47ba 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -658,8 +658,8 @@ static struct section_perm ro_perms[] = {
.start = (unsigned long)_stext,
.end = (unsigned long)__init_begin,
#ifdef CONFIG_ARM_LPAE
- .mask = ~PMD_SECT_RDONLY,
- .prot = PMD_SECT_RDONLY,
+ .mask = ~L_PMD_SECT_RDONLY,
+ .prot = L_PMD_SECT_RDONLY,
#else
.mask = ~(PMD_SECT_APX | PMD_SECT_AP_WRITE),
.prot = PMD_SECT_APX | PMD_SECT_AP_WRITE,
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index cda7c40999b6..4e6ef896c619 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1329,8 +1329,8 @@ static void __init kmap_init(void)
static void __init map_lowmem(void)
{
struct memblock_region *reg;
- unsigned long kernel_x_start = round_down(__pa(_stext), SECTION_SIZE);
- unsigned long kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE);
+ phys_addr_t kernel_x_start = round_down(__pa(_stext), SECTION_SIZE);
+ phys_addr_t kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE);
/* Map all the lowmem memory banks. */
for_each_memblock(memory, reg) {