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authorLinus Torvalds <torvalds@g5.osdl.org>2006-01-12 10:21:22 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-12 10:21:22 -0800
commit45bfe98bd790b5ded00462cd582effcfb42263cc (patch)
treed4a1f2c5303dda106635b615f8f40ea9104bf25e /arch/powerpc/kernel
parent9f5974c8734d83d4ab7096ed98136a82f41210d6 (diff)
parent624cee31bcb14bfd85559fbec5dd7bb833542965 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge
Fix up delete/modify conflict of arch/ppc/kernel/process.c by hand (it's gone, gone, gone). Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/Makefile6
-rw-r--r--arch/powerpc/kernel/pci_64.c5
-rw-r--r--arch/powerpc/kernel/process.c8
-rw-r--r--arch/powerpc/kernel/prom.c28
-rw-r--r--arch/powerpc/kernel/prom_init.c8
-rw-r--r--arch/powerpc/kernel/signal_32.c21
-rw-r--r--arch/powerpc/kernel/signal_64.c20
7 files changed, 59 insertions, 37 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index bbfa1bdceb4..a94699d8dc5 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -11,7 +11,8 @@ CFLAGS_btext.o += -fPIC
endif
obj-y := semaphore.o cputable.o ptrace.o syscalls.o \
- irq.o align.o signal_32.o pmc.o vdso.o
+ irq.o align.o signal_32.o pmc.o vdso.o \
+ init_task.o process.o
obj-y += vdso32/
obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \
signal_64.o ptrace32.o systbl.o \
@@ -44,8 +45,7 @@ extra-$(CONFIG_FSL_BOOKE) := head_fsl_booke.o
extra-$(CONFIG_8xx) := head_8xx.o
extra-y += vmlinux.lds
-obj-y += process.o init_task.o time.o \
- prom.o traps.o setup-common.o udbg.o
+obj-y += time.o prom.o traps.o setup-common.o udbg.o
obj-$(CONFIG_PPC32) += entry_32.o setup_32.o misc_32.o systbl.o
obj-$(CONFIG_PPC64) += misc_64.o dma_64.o iommu.o
obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 24fe70f40b6..c367520bc1c 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -53,6 +53,7 @@ EXPORT_SYMBOL(io_page_mask);
#ifdef CONFIG_PPC_MULTIPLATFORM
static void fixup_resource(struct resource *res, struct pci_dev *dev);
static void do_bus_setup(struct pci_bus *bus);
+static void phbs_remap_io(void);
#endif
/* pci_io_base -- the base address from which io bars are offsets.
@@ -251,6 +252,7 @@ void pcibios_free_controller(struct pci_controller *phb)
kfree(phb);
}
+#ifndef CONFIG_PPC_ISERIES
void __devinit pcibios_claim_one_bus(struct pci_bus *b)
{
struct pci_dev *dev;
@@ -275,7 +277,6 @@ void __devinit pcibios_claim_one_bus(struct pci_bus *b)
EXPORT_SYMBOL_GPL(pcibios_claim_one_bus);
#endif
-#ifndef CONFIG_PPC_ISERIES
static void __init pcibios_claim_of_setup(void)
{
struct pci_bus *b;
@@ -1218,7 +1219,7 @@ int remap_bus_range(struct pci_bus *bus)
}
EXPORT_SYMBOL(remap_bus_range);
-void phbs_remap_io(void)
+static void phbs_remap_io(void)
{
struct pci_controller *hose, *tmp;
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 1f816f0d774..57703994a06 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -201,13 +201,13 @@ int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs)
}
#endif /* CONFIG_SPE */
+#ifndef CONFIG_SMP
/*
* If we are doing lazy switching of CPU state (FP, altivec or SPE),
* and the current task has some state, discard it.
*/
-static inline void discard_lazy_cpu_state(void)
+void discard_lazy_cpu_state(void)
{
-#ifndef CONFIG_SMP
preempt_disable();
if (last_task_used_math == current)
last_task_used_math = NULL;
@@ -220,9 +220,10 @@ static inline void discard_lazy_cpu_state(void)
last_task_used_spe = NULL;
#endif
preempt_enable();
-#endif /* CONFIG_SMP */
}
+#endif /* CONFIG_SMP */
+#ifdef CONFIG_PPC_MERGE /* XXX for now */
int set_dabr(unsigned long dabr)
{
if (ppc_md.set_dabr)
@@ -231,6 +232,7 @@ int set_dabr(unsigned long dabr)
mtspr(SPRN_DABR, dabr);
return 0;
}
+#endif
#ifdef CONFIG_PPC64
DEFINE_PER_CPU(struct cpu_usage, cpu_usage_array);
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 34ab0daec3a..02e2115323e 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1100,17 +1100,37 @@ static int __init early_init_dt_scan_memory(unsigned long node,
static void __init early_reserve_mem(void)
{
- unsigned long base, size;
- unsigned long *reserve_map;
+ u64 base, size;
+ u64 *reserve_map;
- reserve_map = (unsigned long *)(((unsigned long)initial_boot_params) +
+ reserve_map = (u64 *)(((unsigned long)initial_boot_params) +
initial_boot_params->off_mem_rsvmap);
+#ifdef CONFIG_PPC32
+ /*
+ * Handle the case where we might be booting from an old kexec
+ * image that setup the mem_rsvmap as pairs of 32-bit values
+ */
+ if (*reserve_map > 0xffffffffull) {
+ u32 base_32, size_32;
+ u32 *reserve_map_32 = (u32 *)reserve_map;
+
+ while (1) {
+ base_32 = *(reserve_map_32++);
+ size_32 = *(reserve_map_32++);
+ if (size_32 == 0)
+ break;
+ DBG("reserving: %lx -> %lx\n", base_32, size_32);
+ lmb_reserve(base_32, size_32);
+ }
+ return;
+ }
+#endif
while (1) {
base = *(reserve_map++);
size = *(reserve_map++);
if (size == 0)
break;
- DBG("reserving: %lx -> %lx\n", base, size);
+ DBG("reserving: %llx -> %llx\n", base, size);
lmb_reserve(base, size);
}
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index e381f2fc121..d963a12ec64 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -137,8 +137,8 @@ struct prom_t {
};
struct mem_map_entry {
- unsigned long base;
- unsigned long size;
+ u64 base;
+ u64 size;
};
typedef u32 cell_t;
@@ -897,9 +897,9 @@ static unsigned long __init prom_next_cell(int s, cell_t **cellp)
* If problems seem to show up, it would be a good start to track
* them down.
*/
-static void reserve_mem(unsigned long base, unsigned long size)
+static void reserve_mem(u64 base, u64 size)
{
- unsigned long top = base + size;
+ u64 top = base + size;
unsigned long cnt = RELOC(mem_reserve_cnt);
if (size == 0)
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index d3f0b6d452f..177bba78fb0 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -497,6 +497,15 @@ static long restore_user_regs(struct pt_regs *regs,
if (err)
return 1;
+ /*
+ * Do this before updating the thread state in
+ * current->thread.fpr/vr/evr. That way, if we get preempted
+ * and another task grabs the FPU/Altivec/SPE, it won't be
+ * tempted to save the current CPU state into the thread_struct
+ * and corrupt what we are writing there.
+ */
+ discard_lazy_cpu_state();
+
/* force the process to reload the FP registers from
current->thread when it next does FP instructions */
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1);
@@ -538,18 +547,6 @@ static long restore_user_regs(struct pt_regs *regs,
return 1;
#endif /* CONFIG_SPE */
-#ifndef CONFIG_SMP
- preempt_disable();
- if (last_task_used_math == current)
- last_task_used_math = NULL;
- if (last_task_used_altivec == current)
- last_task_used_altivec = NULL;
-#ifdef CONFIG_SPE
- if (last_task_used_spe == current)
- last_task_used_spe = NULL;
-#endif
- preempt_enable();
-#endif
return 0;
}
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index 5462bef898f..7b9d999e211 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -207,10 +207,20 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
if (!sig)
regs->gpr[13] = save_r13;
- err |= __copy_from_user(&current->thread.fpr, &sc->fp_regs, FP_REGS_SIZE);
if (set != NULL)
err |= __get_user(set->sig[0], &sc->oldmask);
+ /*
+ * Do this before updating the thread state in
+ * current->thread.fpr/vr. That way, if we get preempted
+ * and another task grabs the FPU/Altivec, it won't be
+ * tempted to save the current CPU state into the thread_struct
+ * and corrupt what we are writing there.
+ */
+ discard_lazy_cpu_state();
+
+ err |= __copy_from_user(&current->thread.fpr, &sc->fp_regs, FP_REGS_SIZE);
+
#ifdef CONFIG_ALTIVEC
err |= __get_user(v_regs, &sc->v_regs);
err |= __get_user(msr, &sc->gp_regs[PT_MSR]);
@@ -229,14 +239,6 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
current->thread.vrsave = 0;
#endif /* CONFIG_ALTIVEC */
-#ifndef CONFIG_SMP
- preempt_disable();
- if (last_task_used_math == current)
- last_task_used_math = NULL;
- if (last_task_used_altivec == current)
- last_task_used_altivec = NULL;
- preempt_enable();
-#endif
/* Force reload of FP/VEC */
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC);