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-rw-r--r--arch/ppc64/boot/addnote.c60
-rw-r--r--arch/ppc64/kernel/HvLpEvent.c2
-rw-r--r--arch/ppc64/kernel/nvram.c17
-rw-r--r--arch/ppc64/kernel/pSeries_hvCall.S8
-rw-r--r--arch/ppc64/kernel/prom.c4
-rw-r--r--arch/ppc64/kernel/prom_init.c115
-rw-r--r--arch/ppc64/kernel/ptrace.c5
-rw-r--r--arch/ppc64/kernel/ptrace32.c5
-rw-r--r--arch/ppc64/kernel/signal32.c4
-rw-r--r--arch/ppc64/kernel/smp.c12
-rw-r--r--arch/ppc64/kernel/time.c12
-rw-r--r--arch/ppc64/kernel/vdso32/Makefile2
-rw-r--r--arch/ppc64/kernel/vdso32/note.S25
-rw-r--r--arch/ppc64/kernel/vdso32/vdso32.lds.S3
-rw-r--r--arch/ppc64/kernel/vdso64/Makefile2
-rw-r--r--arch/ppc64/kernel/vdso64/note.S1
-rw-r--r--arch/ppc64/kernel/vdso64/vdso64.lds.S5
-rw-r--r--arch/ppc64/mm/hash_low.S9
-rw-r--r--arch/ppc64/mm/hugetlbpage.c45
-rw-r--r--arch/ppc64/mm/init.c198
-rw-r--r--arch/ppc64/mm/slb.c9
21 files changed, 375 insertions, 168 deletions
diff --git a/arch/ppc64/boot/addnote.c b/arch/ppc64/boot/addnote.c
index 66ff8103bf4..719663a694b 100644
--- a/arch/ppc64/boot/addnote.c
+++ b/arch/ppc64/boot/addnote.c
@@ -19,6 +19,7 @@
#include <unistd.h>
#include <string.h>
+/* CHRP note section */
char arch[] = "PowerPC";
#define N_DESCR 6
@@ -31,6 +32,29 @@ unsigned int descr[N_DESCR] = {
0x4000, /* load-base */
};
+/* RPA note section */
+char rpaname[] = "IBM,RPA-Client-Config";
+
+/*
+ * Note: setting ignore_my_client_config *should* mean that OF ignores
+ * all the other fields, but there is a firmware bug which means that
+ * it looks at the splpar field at least. So these values need to be
+ * reasonable.
+ */
+#define N_RPA_DESCR 8
+unsigned int rpanote[N_RPA_DESCR] = {
+ 0, /* lparaffinity */
+ 64, /* min_rmo_size */
+ 0, /* min_rmo_percent */
+ 40, /* max_pft_size */
+ 1, /* splpar */
+ -1, /* min_load */
+ 0, /* new_mem_def */
+ 1, /* ignore_my_client_config */
+};
+
+#define ROUNDUP(len) (((len) + 3) & ~3)
+
unsigned char buf[512];
#define GET_16BE(off) ((buf[off] << 8) + (buf[(off)+1]))
@@ -69,7 +93,7 @@ main(int ac, char **av)
{
int fd, n, i;
int ph, ps, np;
- int nnote, ns;
+ int nnote, nnote2, ns;
if (ac != 2) {
fprintf(stderr, "Usage: %s elf-file\n", av[0]);
@@ -81,7 +105,8 @@ main(int ac, char **av)
exit(1);
}
- nnote = strlen(arch) + 1 + (N_DESCR + 3) * 4;
+ nnote = 12 + ROUNDUP(strlen(arch) + 1) + sizeof(descr);
+ nnote2 = 12 + ROUNDUP(strlen(rpaname) + 1) + sizeof(rpanote);
n = read(fd, buf, sizeof(buf));
if (n < 0) {
@@ -104,7 +129,7 @@ main(int ac, char **av)
np = GET_16BE(E_PHNUM);
if (ph < E_HSIZE || ps < PH_HSIZE || np < 1)
goto notelf;
- if (ph + (np + 1) * ps + nnote > n)
+ if (ph + (np + 2) * ps + nnote + nnote2 > n)
goto nospace;
for (i = 0; i < np; ++i) {
@@ -117,12 +142,12 @@ main(int ac, char **av)
}
/* XXX check that the area we want to use is all zeroes */
- for (i = 0; i < ps + nnote; ++i)
+ for (i = 0; i < 2 * ps + nnote + nnote2; ++i)
if (buf[ph + i] != 0)
goto nospace;
/* fill in the program header entry */
- ns = ph + ps;
+ ns = ph + 2 * ps;
PUT_32BE(ph + PH_TYPE, PT_NOTE);
PUT_32BE(ph + PH_OFFSET, ns);
PUT_32BE(ph + PH_FILESZ, nnote);
@@ -134,11 +159,26 @@ main(int ac, char **av)
PUT_32BE(ns + 8, 0x1275);
strcpy(&buf[ns + 12], arch);
ns += 12 + strlen(arch) + 1;
- for (i = 0; i < N_DESCR; ++i)
- PUT_32BE(ns + i * 4, descr[i]);
+ for (i = 0; i < N_DESCR; ++i, ns += 4)
+ PUT_32BE(ns, descr[i]);
+
+ /* fill in the second program header entry and the RPA note area */
+ ph += ps;
+ PUT_32BE(ph + PH_TYPE, PT_NOTE);
+ PUT_32BE(ph + PH_OFFSET, ns);
+ PUT_32BE(ph + PH_FILESZ, nnote2);
+
+ /* fill in the note area we point to */
+ PUT_32BE(ns, strlen(rpaname) + 1);
+ PUT_32BE(ns + 4, sizeof(rpanote));
+ PUT_32BE(ns + 8, 0x12759999);
+ strcpy(&buf[ns + 12], rpaname);
+ ns += 12 + ROUNDUP(strlen(rpaname) + 1);
+ for (i = 0; i < N_RPA_DESCR; ++i, ns += 4)
+ PUT_32BE(ns, rpanote[i]);
/* Update the number of program headers */
- PUT_16BE(E_PHNUM, np + 1);
+ PUT_16BE(E_PHNUM, np + 2);
/* write back */
lseek(fd, (long) 0, SEEK_SET);
@@ -155,11 +195,11 @@ main(int ac, char **av)
exit(0);
notelf:
- fprintf(stderr, "%s does not appear to be an ELF file\n", av[0]);
+ fprintf(stderr, "%s does not appear to be an ELF file\n", av[1]);
exit(1);
nospace:
fprintf(stderr, "sorry, I can't find space in %s to put the note\n",
- av[0]);
+ av[1]);
exit(1);
}
diff --git a/arch/ppc64/kernel/HvLpEvent.c b/arch/ppc64/kernel/HvLpEvent.c
index 9802beefa21..f8f19637f73 100644
--- a/arch/ppc64/kernel/HvLpEvent.c
+++ b/arch/ppc64/kernel/HvLpEvent.c
@@ -45,7 +45,7 @@ int HvLpEvent_unregisterHandler( HvLpEvent_Type eventType )
/* We now sleep until all other CPUs have scheduled. This ensures that
* the deletion is seen by all other CPUs, and that the deleted handler
* isn't still running on another CPU when we return. */
- synchronize_kernel();
+ synchronize_rcu();
}
}
return rc;
diff --git a/arch/ppc64/kernel/nvram.c b/arch/ppc64/kernel/nvram.c
index b9069c2d193..4e71781a441 100644
--- a/arch/ppc64/kernel/nvram.c
+++ b/arch/ppc64/kernel/nvram.c
@@ -339,9 +339,9 @@ static int nvram_remove_os_partition(void)
static int nvram_create_os_partition(void)
{
struct list_head * p;
- struct nvram_partition * part;
- struct nvram_partition * new_part = NULL;
- struct nvram_partition * free_part = NULL;
+ struct nvram_partition *part = NULL;
+ struct nvram_partition *new_part = NULL;
+ struct nvram_partition *free_part = NULL;
int seq_init[2] = { 0, 0 };
loff_t tmp_index;
long size = 0;
@@ -364,13 +364,11 @@ static int nvram_create_os_partition(void)
free_part = part;
}
}
- if (!size) {
+ if (!size)
return -ENOSPC;
- }
/* Create our OS partition */
- new_part = (struct nvram_partition *)
- kmalloc(sizeof(struct nvram_partition), GFP_KERNEL);
+ new_part = kmalloc(sizeof(*new_part), GFP_KERNEL);
if (!new_part) {
printk(KERN_ERR "nvram_create_os_partition: kmalloc failed\n");
return -ENOMEM;
@@ -379,7 +377,7 @@ static int nvram_create_os_partition(void)
new_part->index = free_part->index;
new_part->header.signature = NVRAM_SIG_OS;
new_part->header.length = size;
- sprintf(new_part->header.name, "ppc64,linux");
+ strcpy(new_part->header.name, "ppc64,linux");
new_part->header.checksum = nvram_checksum(&new_part->header);
rc = nvram_write_header(new_part);
@@ -394,7 +392,8 @@ static int nvram_create_os_partition(void)
tmp_index = new_part->index + NVRAM_HEADER_LEN;
rc = ppc_md.nvram_write((char *)&seq_init, sizeof(seq_init), &tmp_index);
if (rc <= 0) {
- printk(KERN_ERR "nvram_create_os_partition: nvram_write failed (%d)\n", rc);
+ printk(KERN_ERR "nvram_create_os_partition: nvram_write "
+ "failed (%d)\n", rc);
return rc;
}
diff --git a/arch/ppc64/kernel/pSeries_hvCall.S b/arch/ppc64/kernel/pSeries_hvCall.S
index 0715d303801..176e8da7646 100644
--- a/arch/ppc64/kernel/pSeries_hvCall.S
+++ b/arch/ppc64/kernel/pSeries_hvCall.S
@@ -28,6 +28,8 @@
unsigned long *out3); R10
*/
_GLOBAL(plpar_hcall)
+ HMT_MEDIUM
+
mfcr r0
std r8,STK_PARM(r8)(r1) /* Save out ptrs */
@@ -53,6 +55,8 @@ _GLOBAL(plpar_hcall)
/* Simple interface with no output values (other than status) */
_GLOBAL(plpar_hcall_norets)
+ HMT_MEDIUM
+
mfcr r0
stw r0,8(r1)
@@ -75,6 +79,8 @@ _GLOBAL(plpar_hcall_norets)
unsigned long *out1); 120(R1)
*/
_GLOBAL(plpar_hcall_8arg_2ret)
+ HMT_MEDIUM
+
mfcr r0
ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */
stw r0,8(r1)
@@ -99,6 +105,8 @@ _GLOBAL(plpar_hcall_8arg_2ret)
unsigned long *out4); 112(R1)
*/
_GLOBAL(plpar_hcall_4out)
+ HMT_MEDIUM
+
mfcr r0
stw r0,8(r1)
diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c
index 45a4ad08fbc..fe2946c5831 100644
--- a/arch/ppc64/kernel/prom.c
+++ b/arch/ppc64/kernel/prom.c
@@ -321,6 +321,10 @@ static int __devinit finish_node_interrupts(struct device_node *np,
char *name = get_property(ic->parent, "name", NULL);
if (name && !strcmp(name, "u3"))
np->intrs[intrcount].line += 128;
+ else if (!(name && !strcmp(name, "mac-io")))
+ /* ignore other cascaded controllers, such as
+ the k2-sata-root */
+ break;
}
np->intrs[intrcount].sense = 1;
if (n > 1)
diff --git a/arch/ppc64/kernel/prom_init.c b/arch/ppc64/kernel/prom_init.c
index 8dffa9ae262..35ec42de962 100644
--- a/arch/ppc64/kernel/prom_init.c
+++ b/arch/ppc64/kernel/prom_init.c
@@ -493,6 +493,113 @@ static void __init early_cmdline_parse(void)
}
/*
+ * To tell the firmware what our capabilities are, we have to pass
+ * it a fake 32-bit ELF header containing a couple of PT_NOTE sections
+ * that contain structures that contain the actual values.
+ */
+static struct fake_elf {
+ Elf32_Ehdr elfhdr;
+ Elf32_Phdr phdr[2];
+ struct chrpnote {
+ u32 namesz;
+ u32 descsz;
+ u32 type;
+ char name[8]; /* "PowerPC" */
+ struct chrpdesc {
+ u32 real_mode;
+ u32 real_base;
+ u32 real_size;
+ u32 virt_base;
+ u32 virt_size;
+ u32 load_base;
+ } chrpdesc;
+ } chrpnote;
+ struct rpanote {
+ u32 namesz;
+ u32 descsz;
+ u32 type;
+ char name[24]; /* "IBM,RPA-Client-Config" */
+ struct rpadesc {
+ u32 lpar_affinity;
+ u32 min_rmo_size;
+ u32 min_rmo_percent;
+ u32 max_pft_size;
+ u32 splpar;
+ u32 min_load;
+ u32 new_mem_def;
+ u32 ignore_me;
+ } rpadesc;
+ } rpanote;
+} fake_elf = {
+ .elfhdr = {
+ .e_ident = { 0x7f, 'E', 'L', 'F',
+ ELFCLASS32, ELFDATA2MSB, EV_CURRENT },
+ .e_type = ET_EXEC, /* yeah right */
+ .e_machine = EM_PPC,
+ .e_version = EV_CURRENT,
+ .e_phoff = offsetof(struct fake_elf, phdr),
+ .e_phentsize = sizeof(Elf32_Phdr),
+ .e_phnum = 2
+ },
+ .phdr = {
+ [0] = {
+ .p_type = PT_NOTE,
+ .p_offset = offsetof(struct fake_elf, chrpnote),
+ .p_filesz = sizeof(struct chrpnote)
+ }, [1] = {
+ .p_type = PT_NOTE,
+ .p_offset = offsetof(struct fake_elf, rpanote),
+ .p_filesz = sizeof(struct rpanote)
+ }
+ },
+ .chrpnote = {
+ .namesz = sizeof("PowerPC"),
+ .descsz = sizeof(struct chrpdesc),
+ .type = 0x1275,
+ .name = "PowerPC",
+ .chrpdesc = {
+ .real_mode = ~0U, /* ~0 means "don't care" */
+ .real_base = ~0U,
+ .real_size = ~0U,
+ .virt_base = ~0U,
+ .virt_size = ~0U,
+ .load_base = ~0U
+ },
+ },
+ .rpanote = {
+ .namesz = sizeof("IBM,RPA-Client-Config"),
+ .descsz = sizeof(struct rpadesc),
+ .type = 0x12759999,
+ .name = "IBM,RPA-Client-Config",
+ .rpadesc = {
+ .lpar_affinity = 0,
+ .min_rmo_size = 64, /* in megabytes */
+ .min_rmo_percent = 0,
+ .max_pft_size = 48, /* 2^48 bytes max PFT size */
+ .splpar = 1,
+ .min_load = ~0U,
+ .new_mem_def = 0
+ }
+ }
+};
+
+static void __init prom_send_capabilities(void)
+{
+ unsigned long offset = reloc_offset();
+ ihandle elfloader;
+ int ret;
+
+ elfloader = call_prom("open", 1, 1, ADDR("/packages/elf-loader"));
+ if (elfloader == 0) {
+ prom_printf("couldn't open /packages/elf-loader\n");
+ return;
+ }
+ ret = call_prom("call-method", 3, 1, ADDR("process-elf-header"),
+ elfloader, ADDR(&fake_elf));
+ call_prom("close", 1, 0, elfloader);
+}
+
+/*
* Memory allocation strategy... our layout is normally:
*
* at 14Mb or more we vmlinux, then a gap and initrd. In some rare cases, initrd
@@ -1448,6 +1555,12 @@ static void __init scan_dt_build_strings(phandle node, unsigned long *mem_start,
}
}
+/*
+ * The Open Firmware 1275 specification states properties must be 31 bytes or
+ * less, however not all firmwares obey this. Make it 64 bytes to be safe.
+ */
+#define MAX_PROPERTY_NAME 64
+
static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
unsigned long *mem_end)
{
@@ -1457,7 +1570,7 @@ static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
unsigned long soff;
unsigned char *valp;
unsigned long offset = reloc_offset();
- char pname[32];
+ char pname[MAX_PROPERTY_NAME];
char *path;
path = RELOC(prom_scratch);
diff --git a/arch/ppc64/kernel/ptrace.c b/arch/ppc64/kernel/ptrace.c
index 3c76333ec3a..9f8c6087ae5 100644
--- a/arch/ppc64/kernel/ptrace.c
+++ b/arch/ppc64/kernel/ptrace.c
@@ -28,6 +28,7 @@
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
+#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@@ -162,7 +163,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
- if ((unsigned long) data > _NSIG)
+ if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@@ -194,7 +195,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
- if ((unsigned long) data > _NSIG)
+ if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_single_step(child);
diff --git a/arch/ppc64/kernel/ptrace32.c b/arch/ppc64/kernel/ptrace32.c
index ee81b1b776c..16436426c7e 100644
--- a/arch/ppc64/kernel/ptrace32.c
+++ b/arch/ppc64/kernel/ptrace32.c
@@ -26,6 +26,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/security.h>
+#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@@ -293,7 +294,7 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
- if ((unsigned long) data > _NSIG)
+ if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@@ -325,7 +326,7 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
- if ((unsigned long) data > _NSIG)
+ if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_single_step(child);
diff --git a/arch/ppc64/kernel/signal32.c b/arch/ppc64/kernel/signal32.c
index b0e167db6af..3c2fa5c284c 100644
--- a/arch/ppc64/kernel/signal32.c
+++ b/arch/ppc64/kernel/signal32.c
@@ -657,7 +657,7 @@ static int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
/* Save user registers on the stack */
frame = &rt_sf->uc.uc_mcontext;
- if (put_user(regs->gpr[1], (unsigned long __user *)newsp))
+ if (put_user(regs->gpr[1], (u32 __user *)newsp))
goto badframe;
if (vdso32_rt_sigtramp && current->thread.vdso_base) {
@@ -842,7 +842,7 @@ static int handle_signal32(unsigned long sig, struct k_sigaction *ka,
regs->link = (unsigned long) frame->mctx.tramp;
}
- if (put_user(regs->gpr[1], (unsigned long __user *)newsp))
+ if (put_user(regs->gpr[1], (u32 __user *)newsp))
goto badframe;
regs->gpr[1] = (unsigned long) newsp;
regs->gpr[3] = sig;
diff --git a/arch/ppc64/kernel/smp.c b/arch/ppc64/kernel/smp.c
index 1c92da3e452..3b906cd9403 100644
--- a/arch/ppc64/kernel/smp.c
+++ b/arch/ppc64/kernel/smp.c
@@ -125,7 +125,7 @@ void __devinit smp_generic_kick_cpu(int nr)
* the processor will continue on to secondary_start
*/
paca[nr].cpu_start = 1;
- mb();
+ smp_mb();
}
#endif /* CONFIG_PPC_MULTIPLATFORM */
@@ -256,7 +256,7 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
}
call_data = &data;
- wmb();
+ smp_wmb();
/* Send a message to all other CPUs and wait for them to respond */
smp_ops->message_pass(MSG_ALL_BUT_SELF, PPC_MSG_CALL_FUNCTION);
@@ -431,7 +431,7 @@ int generic_cpu_enable(unsigned int cpu)
/* get the target out of it's holding state */
per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
- wmb();
+ smp_wmb();
while (!cpu_online(cpu))
cpu_relax();
@@ -447,7 +447,7 @@ void generic_cpu_die(unsigned int cpu)
int i;
for (i = 0; i < 100; i++) {
- rmb();
+ smp_rmb();
if (per_cpu(cpu_state, cpu) == CPU_DEAD)
return;
msleep(100);
@@ -463,7 +463,7 @@ void generic_mach_cpu_die(void)
cpu = smp_processor_id();
printk(KERN_DEBUG "CPU%d offline\n", cpu);
__get_cpu_var(cpu_state) = CPU_DEAD;
- wmb();
+ smp_wmb();
while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE)
cpu_relax();
@@ -515,7 +515,7 @@ int __devinit __cpu_up(unsigned int cpu)
* be written out to main store before we release
* the processor.
*/
- mb();
+ smp_mb();
/* wake up cpus */
DBG("smp: kicking cpu %d\n", cpu);
diff --git a/arch/ppc64/kernel/time.c b/arch/ppc64/kernel/time.c
index 77ded5a363b..772a465b49f 100644
--- a/arch/ppc64/kernel/time.c
+++ b/arch/ppc64/kernel/time.c
@@ -221,15 +221,15 @@ static __inline__ void timer_recalc_offset(unsigned long cur_tb)
temp_varp->tb_to_xs = do_gtod.varp->tb_to_xs;
temp_varp->tb_orig_stamp = new_tb_orig_stamp;
temp_varp->stamp_xsec = new_stamp_xsec;
- mb();
+ smp_mb();
do_gtod.varp = temp_varp;
do_gtod.var_idx = temp_idx;
++(systemcfg->tb_update_count);
- wmb();
+ smp_wmb();
systemcfg->tb_orig_stamp = new_tb_orig_stamp;
systemcfg->stamp_xsec = new_stamp_xsec;
- wmb();
+ smp_wmb();
++(systemcfg->tb_update_count);
}
@@ -648,7 +648,7 @@ void ppc_adjtimex(void)
temp_varp->tb_to_xs = new_tb_to_xs;
temp_varp->stamp_xsec = new_stamp_xsec;
temp_varp->tb_orig_stamp = do_gtod.varp->tb_orig_stamp;
- mb();
+ smp_mb();
do_gtod.varp = temp_varp;
do_gtod.var_idx = temp_idx;
@@ -662,10 +662,10 @@ void ppc_adjtimex(void)
* loops back and reads them again until this criteria is met.
*/
++(systemcfg->tb_update_count);
- wmb();
+ smp_wmb();
systemcfg->tb_to_xs = new_tb_to_xs;
systemcfg->stamp_xsec = new_stamp_xsec;
- wmb();
+ smp_wmb();
++(systemcfg->tb_update_count);
write_sequnlock_irqrestore( &xtime_lock, flags );
diff --git a/arch/ppc64/kernel/vdso32/Makefile b/arch/ppc64/kernel/vdso32/Makefile
index ede2f7e477c..0b1b0df973e 100644
--- a/arch/ppc64/kernel/vdso32/Makefile
+++ b/arch/ppc64/kernel/vdso32/Makefile
@@ -1,7 +1,7 @@
# List of files in the vdso, has to be asm only for now
-obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o
+obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o
# Build rules
diff --git a/arch/ppc64/kernel/vdso32/note.S b/arch/ppc64/kernel/vdso32/note.S
new file mode 100644
index 00000000000..d4b5be4f3d5
--- /dev/null
+++ b/arch/ppc64/kernel/vdso32/note.S
@@ -0,0 +1,25 @@
+/*
+ * This supplies .note.* sections to go into the PT_NOTE inside the vDSO text.
+ * Here we can supply some information useful to userland.
+ */
+
+#include <linux/uts.h>
+#include <linux/version.h>
+
+#define ASM_ELF_NOTE_BEGIN(name, flags, vendor, type) \
+ .section name, flags; \
+ .balign 4; \
+ .long 1f - 0f; /* name length */ \
+ .long 3f - 2f; /* data length */ \
+ .long type; /* note type */ \
+0: .asciz vendor; /* vendor name */ \
+1: .balign 4; \
+2:
+
+#define ASM_ELF_NOTE_END \
+3: .balign 4; /* pad out section */ \
+ .previous
+
+ ASM_ELF_NOTE_BEGIN(".note.kernel-version", "a", UTS_SYSNAME, 0)
+ .long LINUX_VERSION_CODE
+ ASM_ELF_NOTE_END
diff --git a/arch/ppc64/kernel/vdso32/vdso32.lds.S b/arch/ppc64/kernel/vdso32/vdso32.lds.S
index cca27bd03a5..11290c902ba 100644
--- a/arch/ppc64/kernel/vdso32/vdso32.lds.S
+++ b/arch/ppc64/kernel/vdso32/vdso32.lds.S
@@ -20,6 +20,8 @@ SECTIONS
.gnu.version_d : { *(.gnu.version_d) }
.gnu.version_r : { *(.gnu.version_r) }
+ .note : { *(.note.*) } :text :note
+
. = ALIGN (16);
.text :
{
@@ -87,6 +89,7 @@ SECTIONS
PHDRS
{
text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
+ note PT_NOTE FLAGS(4); /* PF_R */
dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
}
diff --git a/arch/ppc64/kernel/vdso64/Makefile b/arch/ppc64/kernel/vdso64/Makefile
index bd3f70b1a38..ab39988452c 100644
--- a/arch/ppc64/kernel/vdso64/Makefile
+++ b/arch/ppc64/kernel/vdso64/Makefile
@@ -1,6 +1,6 @@
# List of files in the vdso, has to be asm only for now
-obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o
+obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o
# Build rules
diff --git a/arch/ppc64/kernel/vdso64/note.S b/arch/ppc64/kernel/vdso64/note.S
new file mode 100644
index 00000000000..dc2a509f7e8
--- /dev/null
+++ b/arch/ppc64/kernel/vdso64/note.S
@@ -0,0 +1 @@
+#include "../vdso32/note.S"
diff --git a/arch/ppc64/kernel/vdso64/vdso64.lds.S b/arch/ppc64/kernel/vdso64/vdso64.lds.S
index 942c815c7bc..9cb28181da8 100644
--- a/arch/ppc64/kernel/vdso64/vdso64.lds.S
+++ b/arch/ppc64/kernel/vdso64/vdso64.lds.S
@@ -18,12 +18,14 @@ SECTIONS
.gnu.version_d : { *(.gnu.version_d) }
.gnu.version_r : { *(.gnu.version_r) }
+ .note : { *(.note.*) } :text :note
+
. = ALIGN (16);
.text :
{
*(.text .stub .text.* .gnu.linkonce.t.*)
*(.sfpr .glink)
- }
+ } :text
PROVIDE (__etext = .);
PROVIDE (_etext = .);
PROVIDE (etext = .);
@@ -88,6 +90,7 @@ SECTIONS
PHDRS
{
text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
+ note PT_NOTE FLAGS(4); /* PF_R */
dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
}
diff --git a/arch/ppc64/mm/hash_low.S b/arch/ppc64/mm/hash_low.S
index 8c0156a3700..c23d46956dd 100644
--- a/arch/ppc64/mm/hash_low.S
+++ b/arch/ppc64/mm/hash_low.S
@@ -85,7 +85,10 @@ _GLOBAL(__hash_page)
bne- htab_wrong_access
/* Check if PTE is busy */
andi. r0,r31,_PAGE_BUSY
- bne- 1b
+ /* If so, just bail out and refault if needed. Someone else
+ * is changing this PTE anyway and might hash it.
+ */
+ bne- bail_ok
/* Prepare new PTE value (turn access RW into DIRTY, then
* add BUSY,HASHPTE and ACCESSED)
*/
@@ -215,6 +218,10 @@ _GLOBAL(htab_call_hpte_remove)
/* Try all again */
b htab_insert_pte
+bail_ok:
+ li r3,0
+ b bail
+
htab_pte_insert_ok:
/* Insert slot number & secondary bit in PTE */
rldimi r30,r3,12,63-15
diff --git a/arch/ppc64/mm/hugetlbpage.c b/arch/ppc64/mm/hugetlbpage.c
index 390296efe3e..d3bf86a5c1a 100644
--- a/arch/ppc64/mm/hugetlbpage.c
+++ b/arch/ppc64/mm/hugetlbpage.c
@@ -42,7 +42,7 @@ static inline int hugepgd_index(unsigned long addr)
return (addr & ~REGION_MASK) >> HUGEPGDIR_SHIFT;
}
-static pgd_t *hugepgd_offset(struct mm_struct *mm, unsigned long addr)
+static pud_t *hugepgd_offset(struct mm_struct *mm, unsigned long addr)
{
int index;
@@ -52,21 +52,21 @@ static pgd_t *hugepgd_offset(struct mm_struct *mm, unsigned long addr)
index = hugepgd_index(addr);
BUG_ON(index >= PTRS_PER_HUGEPGD);
- return mm->context.huge_pgdir + index;
+ return (pud_t *)(mm->context.huge_pgdir + index);
}
-static inline pte_t *hugepte_offset(pgd_t *dir, unsigned long addr)
+static inline pte_t *hugepte_offset(pud_t *dir, unsigned long addr)
{
int index;
- if (pgd_none(*dir))
+ if (pud_none(*dir))
return NULL;
index = (addr >> HPAGE_SHIFT) % PTRS_PER_HUGEPTE;
- return (pte_t *)pgd_page(*dir) + index;
+ return (pte_t *)pud_page(*dir) + index;
}
-static pgd_t *hugepgd_alloc(struct mm_struct *mm, unsigned long addr)
+static pud_t *hugepgd_alloc(struct mm_struct *mm, unsigned long addr)
{
BUG_ON(! in_hugepage_area(mm->context, addr));
@@ -90,10 +90,9 @@ static pgd_t *hugepgd_alloc(struct mm_struct *mm, unsigned long addr)
return hugepgd_offset(mm, addr);
}
-static pte_t *hugepte_alloc(struct mm_struct *mm, pgd_t *dir,
- unsigned long addr)
+static pte_t *hugepte_alloc(struct mm_struct *mm, pud_t *dir, unsigned long addr)
{
- if (! pgd_present(*dir)) {
+ if (! pud_present(*dir)) {
pte_t *new;
spin_unlock(&mm->page_table_lock);
@@ -104,7 +103,7 @@ static pte_t *hugepte_alloc(struct mm_struct *mm, pgd_t *dir,
* Because we dropped the lock, we should re-check the
* entry, as somebody else could have populated it..
*/
- if (pgd_present(*dir)) {
+ if (pud_present(*dir)) {
if (new)
kmem_cache_free(zero_cache, new);
} else {
@@ -115,7 +114,7 @@ static pte_t *hugepte_alloc(struct mm_struct *mm, pgd_t *dir,
ptepage = virt_to_page(new);
ptepage->mapping = (void *) mm;
ptepage->index = addr & HUGEPGDIR_MASK;
- pgd_populate(mm, dir, new);
+ pud_populate(mm, dir, new);
}
}
@@ -124,28 +123,28 @@ static pte_t *hugepte_alloc(struct mm_struct *mm, pgd_t *dir,
static pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
{
- pgd_t *pgd;
+ pud_t *pud;
BUG_ON(! in_hugepage_area(mm->context, addr));
- pgd = hugepgd_offset(mm, addr);
- if (! pgd)
+ pud = hugepgd_offset(mm, addr);
+ if (! pud)
return NULL;
- return hugepte_offset(pgd, addr);
+ return hugepte_offset(pud, addr);
}
static pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
{
- pgd_t *pgd;
+ pud_t *pud;
BUG_ON(! in_hugepage_area(mm->context, addr));
- pgd = hugepgd_alloc(mm, addr);
- if (! pgd)
+ pud = hugepgd_alloc(mm, addr);
+ if (! pud)
return NULL;
- return hugepte_alloc(mm, pgd, addr);
+ return hugepte_alloc(mm, pud, addr);
}
static void set_huge_pte(struct mm_struct *mm, struct vm_area_struct *vma,
@@ -709,10 +708,10 @@ void hugetlb_mm_free_pgd(struct mm_struct *mm)
/* cleanup any hugepte pages leftover */
for (i = 0; i < PTRS_PER_HUGEPGD; i++) {
- pgd_t *pgd = pgdir + i;
+ pud_t *pud = (pud_t *)(pgdir + i);
- if (! pgd_none(*pgd)) {
- pte_t *pte = (pte_t *)pgd_page(*pgd);
+ if (! pud_none(*pud)) {
+ pte_t *pte = (pte_t *)pud_page(*pud);
struct page *ptepage = virt_to_page(pte);
ptepage->mapping = NULL;
@@ -720,7 +719,7 @@ void hugetlb_mm_free_pgd(struct mm_struct *mm)
BUG_ON(memcmp(pte, empty_zero_page, PAGE_SIZE));
kmem_cache_free(zero_cache, pte);
}
- pgd_clear(pgd);
+ pud_clear(pud);
}
BUG_ON(memcmp(pgdir, empty_zero_page, PAGE_SIZE));
diff --git a/arch/ppc64/mm/init.c b/arch/ppc64/mm/init.c
index a7149b9fc35..cf33d7ec2e2 100644
--- a/arch/ppc64/mm/init.c
+++ b/arch/ppc64/mm/init.c
@@ -136,14 +136,78 @@ void iounmap(volatile void __iomem *addr)
#else
+static void unmap_im_area_pte(pmd_t *pmd, unsigned long addr,
+ unsigned long end)
+{
+ pte_t *pte;
+
+ pte = pte_offset_kernel(pmd, addr);
+ do {
+ pte_t ptent = ptep_get_and_clear(&ioremap_mm, addr, pte);
+ WARN_ON(!pte_none(ptent) && !pte_present(ptent));
+ } while (pte++, addr += PAGE_SIZE, addr != end);
+}
+
+static inline void unmap_im_area_pmd(pud_t *pud, unsigned long addr,
+ unsigned long end)
+{
+ pmd_t *pmd;
+ unsigned long next;
+
+ pmd = pmd_offset(pud, addr);
+ do {
+ next = pmd_addr_end(addr, end);
+ if (pmd_none_or_clear_bad(pmd))
+ continue;
+ unmap_im_area_pte(pmd, addr, next);
+ } while (pmd++, addr = next, addr != end);
+}
+
+static inline void unmap_im_area_pud(pgd_t *pgd, unsigned long addr,
+ unsigned long end)
+{
+ pud_t *pud;
+ unsigned long next;
+
+ pud = pud_offset(pgd, addr);
+ do {
+ next = pud_addr_end(addr, end);
+ if (pud_none_or_clear_bad(pud))
+ continue;
+ unmap_im_area_pmd(pud, addr, next);
+ } while (pud++, addr = next, addr != end);
+}
+
+static void unmap_im_area(unsigned long addr, unsigned long end)
+{
+ struct mm_struct *mm = &ioremap_mm;
+ unsigned long next;
+ pgd_t *pgd;
+
+ spin_lock(&mm->page_table_lock);
+
+ pgd = pgd_offset_i(addr);
+ flush_cache_vunmap(addr, end);
+ do {
+ next = pgd_addr_end(addr, end);
+ if (pgd_none_or_clear_bad(pgd))
+ continue;
+ unmap_im_area_pud(pgd, addr, next);
+ } while (pgd++, addr = next, addr != end);
+ flush_tlb_kernel_range(start, end);
+
+ spin_unlock(&mm->page_table_lock);
+}
+
/*
* map_io_page currently only called by __ioremap
* map_io_page adds an entry to the ioremap page table
* and adds an entry to the HPT, possibly bolting it
*/
-static void map_io_page(unsigned long ea, unsigned long pa, int flags)
+static int map_io_page(unsigned long ea, unsigned long pa, int flags)
{
pgd_t *pgdp;
+ pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
unsigned long vsid;
@@ -151,9 +215,15 @@ static void map_io_page(unsigned long ea, unsigned long pa, int flags)
if (mem_init_done) {
spin_lock(&ioremap_mm.page_table_lock);
pgdp = pgd_offset_i(ea);
- pmdp = pmd_alloc(&ioremap_mm, pgdp, ea);
+ pudp = pud_alloc(&ioremap_mm, pgdp, ea);
+ if (!pudp)
+ return -ENOMEM;
+ pmdp = pmd_alloc(&ioremap_mm, pudp, ea);
+ if (!pmdp)
+ return -ENOMEM;
ptep = pte_alloc_kernel(&ioremap_mm, pmdp, ea);
-
+ if (!ptep)
+ return -ENOMEM;
pa = abs_to_phys(pa);
set_pte_at(&ioremap_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT,
__pgprot(flags)));
@@ -181,6 +251,7 @@ static void map_io_page(unsigned long ea, unsigned long pa, int flags)
panic("map_io_page: could not insert mapping");
}
}
+ return 0;
}
@@ -194,9 +265,14 @@ static void __iomem * __ioremap_com(unsigned long addr, unsigned long pa,
flags |= pgprot_val(PAGE_KERNEL);
for (i = 0; i < size; i += PAGE_SIZE)
- map_io_page(ea+i, pa+i, flags);
+ if (map_io_page(ea+i, pa+i, flags))
+ goto failure;
return (void __iomem *) (ea + (addr & ~PAGE_MASK));
+ failure:
+ if (mem_init_done)
+ unmap_im_area(ea, ea + size);
+ return NULL;
}
@@ -206,10 +282,11 @@ ioremap(unsigned long addr, unsigned long size)
return __ioremap(addr, size, _PAGE_NO_CACHE | _PAGE_GUARDED);
}
-void __iomem *
-__ioremap(unsigned long addr, unsigned long size, unsigned long flags)
+void __iomem * __ioremap(unsigned long addr, unsigned long size,
+ unsigned long flags)
{
unsigned long pa, ea;
+ void __iomem *ret;
/*
* Choose an address to map it to.
@@ -232,12 +309,16 @@ __ioremap(unsigned long addr, unsigned long size, unsigned long flags)
if (area == NULL)
return NULL;
ea = (unsigned long)(area->addr);
+ ret = __ioremap_com(addr, pa, ea, size, flags);
+ if (!ret)
+ im_free(area->addr);
} else {
ea = ioremap_bot;
- ioremap_bot += size;
+ ret = __ioremap_com(addr, pa, ea, size, flags);
+ if (ret)
+ ioremap_bot += size;
}
-
- return __ioremap_com(addr, pa, ea, size, flags);
+ return ret;
}
#define IS_PAGE_ALIGNED(_val) ((_val) == ((_val) & PAGE_MASK))
@@ -246,6 +327,7 @@ int __ioremap_explicit(unsigned long pa, unsigned long ea,
unsigned long size, unsigned long flags)
{
struct vm_struct *area;
+ void __iomem *ret;
/* For now, require page-aligned values for pa, ea, and size */
if (!IS_PAGE_ALIGNED(pa) || !IS_PAGE_ALIGNED(ea) ||
@@ -276,7 +358,12 @@ int __ioremap_explicit(unsigned long pa, unsigned long ea,
}
}
- if (__ioremap_com(pa, pa, ea, size, flags) != (void *) ea) {
+ ret = __ioremap_com(pa, pa, ea, size, flags);
+ if (ret == NULL) {
+ printk(KERN_ERR "ioremap_explicit() allocation failure !\n");
+ return 1;
+ }
+ if (ret != (void *) ea) {
printk(KERN_ERR "__ioremap_com() returned unexpected addr\n");
return 1;
}
@@ -284,69 +371,6 @@ int __ioremap_explicit(unsigned long pa, unsigned long ea,
return 0;
}
-static void unmap_im_area_pte(pmd_t *pmd, unsigned long address,
- unsigned long size)
-{
- unsigned long base, end;
- pte_t *pte;
-
- if (pmd_none(*pmd))
- return;
- if (pmd_bad(*pmd)) {
- pmd_ERROR(*pmd);
- pmd_clear(pmd);
- return;
- }
-
- pte = pte_offset_kernel(pmd, address);
- base = address & PMD_MASK;
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
-
- do {
- pte_t page;
- page = ptep_get_and_clear(&ioremap_mm, base + address, pte);
- address += PAGE_SIZE;
- pte++;
- if (pte_none(page))
- continue;
- if (pte_present(page))
- continue;
- printk(KERN_CRIT "Whee.. Swapped out page in kernel page"
- " table\n");
- } while (address < end);
-}
-
-static void unmap_im_area_pmd(pgd_t *dir, unsigned long address,
- unsigned long size)
-{
- unsigned long base, end;
- pmd_t *pmd;
-
- if (pgd_none(*dir))
- return;
- if (pgd_bad(*dir)) {
- pgd_ERROR(*dir);
- pgd_clear(dir);
- return;
- }
-
- pmd = pmd_offset(dir, address);
- base = address & PGDIR_MASK;
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
-
- do {
- unmap_im_area_pte(pmd, base + address, end - address);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address < end);
-}
-
/*
* Unmap an IO region and remove it from imalloc'd list.
* Access to IO memory should be serialized by driver.
@@ -356,39 +380,19 @@ static void unmap_im_area_pmd(pgd_t *dir, unsigned long address,
*/
void iounmap(volatile void __iomem *token)
{
- unsigned long address, start, end, size;
- struct mm_struct *mm;
- pgd_t *dir;
+ unsigned long address, size;
void *addr;
- if (!mem_init_done) {
+ if (!mem_init_done)
return;
- }
addr = (void *) ((unsigned long __force) token & PAGE_MASK);
- if ((size = im_free(addr)) == 0) {
+ if ((size = im_free(addr)) == 0)
return;
- }
address = (unsigned long)addr;
- start = address;
- end = address + size;
-
- mm = &ioremap_mm;
- spin_lock(&mm->page_table_lock);
-
- dir = pgd_offset_i(address);
- flush_cache_vunmap(address, end);
- do {
- unmap_im_area_pmd(dir, address, end - address);
- address = (address + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
- } while (address && (address < end));
- flush_tlb_kernel_range(start, end);
-
- spin_unlock(&mm->page_table_lock);
- return;
+ unmap_im_area(address, address + size);
}
static int iounmap_subset_regions(unsigned long addr, unsigned long size)
diff --git a/arch/ppc64/mm/slb.c b/arch/ppc64/mm/slb.c
index 6a20773f695..244150a0bc1 100644
--- a/arch/ppc64/mm/slb.c
+++ b/arch/ppc64/mm/slb.c
@@ -33,8 +33,8 @@ static inline unsigned long mk_vsid_data(unsigned long ea, unsigned long flags)
return (get_kernel_vsid(ea) << SLB_VSID_SHIFT) | flags;
}
-static inline void create_slbe(unsigned long ea, unsigned long vsid,
- unsigned long flags, unsigned long entry)
+static inline void create_slbe(unsigned long ea, unsigned long flags,
+ unsigned long entry)
{
asm volatile("slbmte %0,%1" :
: "r" (mk_vsid_data(ea, flags)),
@@ -145,9 +145,8 @@ void slb_initialize(void)
asm volatile("isync":::"memory");
asm volatile("slbmte %0,%0"::"r" (0) : "memory");
asm volatile("isync; slbia; isync":::"memory");
- create_slbe(KERNELBASE, get_kernel_vsid(KERNELBASE), flags, 0);
- create_slbe(VMALLOCBASE, get_kernel_vsid(KERNELBASE),
- SLB_VSID_KERNEL, 1);
+ create_slbe(KERNELBASE, flags, 0);
+ create_slbe(VMALLOCBASE, SLB_VSID_KERNEL, 1);
/* We don't bolt the stack for the time being - we're in boot,
* so the stack is in the bolted segment. By the time it goes
* elsewhere, we'll call _switch() which will bolt in the new
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-12 13:53:07 +0000