aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2008-08-18 12:05:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-18 12:05:01 -0700
commit04cde035fa47b4a7465a15db8d6eaebcc15a68af (patch)
treeea70ab0cb99a8337f1822ec2f7e2ed5a7918bd8d
parent1de481ded98d1d48e2a4102a5aa549e3c4d18ee3 (diff)
parent50d0b17645a26d2877c9d5538114498c3f82adac (diff)
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: powerpc: Use generic compat_sys_old_readdir powerpc/kexec: Fix up KEXEC_CONTROL_CODE_SIZE missed during conversion powerpc: Remove dead module_find_bug code powerpc: Add CMO enabled flag and paging space data to lparcfg powerpc: Fix CMM page loaning on 64k page kernel with 4k hardware pages powerpc: Make CMO paging space pool ID and page size available powerpc: Fix lockdep IRQ tracing bug powerpc: Fix TLB invalidation on boot on 32-bit powerpc: Fix loss of vdso on fork on 32-bit
-rw-r--r--arch/powerpc/include/asm/hvcall.h22
-rw-r--r--arch/powerpc/include/asm/irqflags.h5
-rw-r--r--arch/powerpc/include/asm/mmu_context.h1
-rw-r--r--arch/powerpc/include/asm/systbl.h2
-rw-r--r--arch/powerpc/kernel/head_32.S2
-rw-r--r--arch/powerpc/kernel/lparcfg.c5
-rw-r--r--arch/powerpc/kernel/misc_32.S2
-rw-r--r--arch/powerpc/kernel/module.c15
-rw-r--r--arch/powerpc/kernel/sys_ppc32.c57
-rw-r--r--arch/powerpc/platforms/pseries/plpar_wrappers.h27
-rw-r--r--arch/powerpc/platforms/pseries/setup.c28
11 files changed, 78 insertions, 88 deletions
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index fbe2932fa9e9..6251a4b10be7 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -291,6 +291,28 @@ struct hvcall_mpp_data {
};
int h_get_mpp(struct hvcall_mpp_data *);
+
+#ifdef CONFIG_PPC_PSERIES
+extern int CMO_PrPSP;
+extern int CMO_SecPSP;
+extern unsigned long CMO_PageSize;
+
+static inline int cmo_get_primary_psp(void)
+{
+ return CMO_PrPSP;
+}
+
+static inline int cmo_get_secondary_psp(void)
+{
+ return CMO_SecPSP;
+}
+
+static inline unsigned long cmo_get_page_size(void)
+{
+ return CMO_PageSize;
+}
+#endif /* CONFIG_PPC_PSERIES */
+
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_HVCALL_H */
diff --git a/arch/powerpc/include/asm/irqflags.h b/arch/powerpc/include/asm/irqflags.h
index 17ba3a881bfd..5f68ecfdf516 100644
--- a/arch/powerpc/include/asm/irqflags.h
+++ b/arch/powerpc/include/asm/irqflags.h
@@ -20,7 +20,7 @@
#define TRACE_ENABLE_INTS bl .trace_hardirqs_on
#define TRACE_DISABLE_INTS bl .trace_hardirqs_off
#define TRACE_AND_RESTORE_IRQ_PARTIAL(en,skip) \
- cmpdi en, 0; \
+ cmpdi en,0; \
bne 95f; \
stb en,PACASOFTIRQEN(r13); \
bl .trace_hardirqs_off; \
@@ -29,7 +29,8 @@
li en,1;
#define TRACE_AND_RESTORE_IRQ(en) \
TRACE_AND_RESTORE_IRQ_PARTIAL(en,96f); \
-96: stb en,PACASOFTIRQEN(r13)
+ stb en,PACASOFTIRQEN(r13); \
+96:
#else
#define TRACE_ENABLE_INTS
#define TRACE_DISABLE_INTS
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h
index 9102b8bf0ead..6b993ef452ff 100644
--- a/arch/powerpc/include/asm/mmu_context.h
+++ b/arch/powerpc/include/asm/mmu_context.h
@@ -147,7 +147,6 @@ static inline void get_mmu_context(struct mm_struct *mm)
static inline int init_new_context(struct task_struct *t, struct mm_struct *mm)
{
mm->context.id = NO_CONTEXT;
- mm->context.vdso_base = 0;
return 0;
}
diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index e084272ed1c2..f6cc7a43b4fa 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -92,7 +92,7 @@ COMPAT_SYS_SPU(readlink)
SYSCALL(uselib)
SYSCALL(swapon)
SYSCALL(reboot)
-SYSX(sys_ni_syscall,old32_readdir,old_readdir)
+SYSX(sys_ni_syscall,compat_sys_old_readdir,old_readdir)
SYSCALL_SPU(mmap)
SYSCALL_SPU(munmap)
SYSCALL_SPU(truncate)
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 99ee2f0f0f2b..8bb657519299 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -1155,7 +1155,7 @@ flush_tlbs:
lis r10, 0x40
1: addic. r10, r10, -0x1000
tlbie r10
- blt 1b
+ bgt 1b
sync
blr
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 1a09719c7628..b3eef30b5131 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -416,6 +416,8 @@ static void pseries_cmo_data(struct seq_file *m)
unsigned long cmo_faults = 0;
unsigned long cmo_fault_time = 0;
+ seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO));
+
if (!firmware_has_feature(FW_FEATURE_CMO))
return;
@@ -427,6 +429,9 @@ static void pseries_cmo_data(struct seq_file *m)
seq_printf(m, "cmo_faults=%lu\n", cmo_faults);
seq_printf(m, "cmo_fault_time_usec=%lu\n",
cmo_fault_time / tb_ticks_per_usec);
+ seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp());
+ seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp());
+ seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size());
}
static int pseries_lparcfg_data(struct seq_file *m, void *v)
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 6321ae36f729..7a6dfbca7682 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -899,7 +899,7 @@ relocate_new_kernel:
/* set a new stack at the bottom of our page... */
/* (not really needed now) */
- addi r1, r4, KEXEC_CONTROL_CODE_SIZE - 8 /* for LR Save+Back Chain */
+ addi r1, r4, KEXEC_CONTROL_PAGE_SIZE - 8 /* for LR Save+Back Chain */
stw r0, 0(r1)
/* Do the copies */
diff --git a/arch/powerpc/kernel/module.c b/arch/powerpc/kernel/module.c
index af07003573c4..7ff292475269 100644
--- a/arch/powerpc/kernel/module.c
+++ b/arch/powerpc/kernel/module.c
@@ -99,18 +99,3 @@ void module_arch_cleanup(struct module *mod)
{
module_bug_cleanup(mod);
}
-
-struct bug_entry *module_find_bug(unsigned long bugaddr)
-{
- struct mod_arch_specific *mod;
- unsigned int i;
- struct bug_entry *bug;
-
- list_for_each_entry(mod, &module_bug_list, bug_list) {
- bug = mod->bug_table;
- for (i = 0; i < mod->num_bugs; ++i, ++bug)
- if (bugaddr == bug->bug_addr)
- return bug;
- }
- return NULL;
-}
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index 709f8cb8bfca..d98634c76060 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -52,63 +52,6 @@
#include <asm/ppc-pci.h>
#include <asm/syscalls.h>
-struct old_linux_dirent32 {
- u32 d_ino;
- u32 d_offset;
- unsigned short d_namlen;
- char d_name[1];
-};
-
-struct readdir_callback32 {
- struct old_linux_dirent32 __user * dirent;
- int count;
-};
-
-static int fillonedir(void * __buf, const char * name, int namlen,
- off_t offset, u64 ino, unsigned int d_type)
-{
- struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
- struct old_linux_dirent32 __user * dirent;
- ino_t d_ino;
-
- if (buf->count)
- return -EINVAL;
- d_ino = ino;
- if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
- return -EOVERFLOW;
- buf->count++;
- dirent = buf->dirent;
- put_user(d_ino, &dirent->d_ino);
- put_user(offset, &dirent->d_offset);
- put_user(namlen, &dirent->d_namlen);
- copy_to_user(dirent->d_name, name, namlen);
- put_user(0, dirent->d_name + namlen);
- return 0;
-}
-
-asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
-{
- int error = -EBADF;
- struct file * file;
- struct readdir_callback32 buf;
-
- file = fget(fd);
- if (!file)
- goto out;
-
- buf.count = 0;
- buf.dirent = dirent;
-
- error = vfs_readdir(file, (filldir_t)fillonedir, &buf);
- if (error < 0)
- goto out_putf;
- error = buf.count;
-
-out_putf:
- fput(file);
-out:
- return error;
-}
asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
compat_ulong_t __user *outp, compat_ulong_t __user *exp,
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index a437267c6bf8..d967c1893ab5 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -2,6 +2,7 @@
#define _PSERIES_PLPAR_WRAPPERS_H
#include <asm/hvcall.h>
+#include <asm/page.h>
static inline long poll_pending(void)
{
@@ -44,12 +45,34 @@ static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
static inline long plpar_page_set_loaned(unsigned long vpa)
{
- return plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa, 0);
+ unsigned long cmo_page_sz = cmo_get_page_size();
+ long rc = 0;
+ int i;
+
+ for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
+ rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0);
+
+ for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
+ plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE,
+ vpa + i - cmo_page_sz, 0);
+
+ return rc;
}
static inline long plpar_page_set_active(unsigned long vpa)
{
- return plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa, 0);
+ unsigned long cmo_page_sz = cmo_get_page_size();
+ long rc = 0;
+ int i;
+
+ for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
+ rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0);
+
+ for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
+ plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED,
+ vpa + i - cmo_page_sz, 0);
+
+ return rc;
}
extern void vpa_init(int cpu);
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 063a0d2fba30..3ce8a139b85d 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -68,6 +68,9 @@
#include "plpar_wrappers.h"
#include "pseries.h"
+int CMO_PrPSP = -1;
+int CMO_SecPSP = -1;
+unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT);
int fwnmi_active; /* TRUE if an FWNMI handler is present */
@@ -325,8 +328,7 @@ void pSeries_cmo_feature_init(void)
{
char *ptr, *key, *value, *end;
int call_status;
- int PrPSP = -1;
- int SecPSP = -1;
+ int page_order = IOMMU_PAGE_SHIFT;
pr_debug(" -> fw_cmo_feature_init()\n");
spin_lock(&rtas_data_buf_lock);
@@ -365,21 +367,31 @@ void pSeries_cmo_feature_init(void)
break;
}
- if (0 == strcmp(key, "PrPSP"))
- PrPSP = simple_strtol(value, NULL, 10);
+ if (0 == strcmp(key, "CMOPageSize"))
+ page_order = simple_strtol(value, NULL, 10);
+ else if (0 == strcmp(key, "PrPSP"))
+ CMO_PrPSP = simple_strtol(value, NULL, 10);
else if (0 == strcmp(key, "SecPSP"))
- SecPSP = simple_strtol(value, NULL, 10);
+ CMO_SecPSP = simple_strtol(value, NULL, 10);
value = key = ptr + 1;
}
ptr++;
}
- if (PrPSP != -1 || SecPSP != -1) {
+ /* Page size is returned as the power of 2 of the page size,
+ * convert to the page size in bytes before returning
+ */
+ CMO_PageSize = 1 << page_order;
+ pr_debug("CMO_PageSize = %lu\n", CMO_PageSize);
+
+ if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {
pr_info("CMO enabled\n");
- pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", PrPSP, SecPSP);
+ pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
+ CMO_SecPSP);
powerpc_firmware_features |= FW_FEATURE_CMO;
} else
- pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", PrPSP, SecPSP);
+ pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
+ CMO_SecPSP);
spin_unlock(&rtas_data_buf_lock);
pr_debug(" <- fw_cmo_feature_init()\n");
}

Privacy Policy