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-rw-r--r--arch/sparc64/Kconfig1
-rw-r--r--arch/sparc64/kernel/Makefile5
-rw-r--r--arch/sparc64/kernel/ds.c54
-rw-r--r--arch/sparc64/kernel/smp.c52
4 files changed, 59 insertions, 53 deletions
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index 3c2e3397caf..b84b6af1241 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -316,7 +316,6 @@ config SUN_IO
config SUN_LDOMS
bool "Sun Logical Domains support"
- select HOTPLUG_CPU
help
Say Y here is you want to support virtual devices via
Logical Domains.
diff --git a/arch/sparc64/kernel/Makefile b/arch/sparc64/kernel/Makefile
index 62db93c148c..b66876bf410 100644
--- a/arch/sparc64/kernel/Makefile
+++ b/arch/sparc64/kernel/Makefile
@@ -12,14 +12,13 @@ obj-y := process.o setup.o cpu.o idprom.o \
irq.o ptrace.o time.o sys_sparc.o signal.o \
unaligned.o central.o pci.o starfire.o semaphore.o \
power.o sbus.o iommu_common.o sparc64_ksyms.o chmc.o \
- visemul.o prom.o of_device.o hvapi.o sstate.o mdesc.o \
- hvtramp.o
+ visemul.o prom.o of_device.o hvapi.o sstate.o mdesc.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_PCI) += ebus.o isa.o pci_common.o pci_iommu.o \
pci_psycho.o pci_sabre.o pci_schizo.o \
pci_sun4v.o pci_sun4v_asm.o pci_fire.o
-obj-$(CONFIG_SMP) += smp.o trampoline.o
+obj-$(CONFIG_SMP) += smp.o trampoline.o hvtramp.o
obj-$(CONFIG_SPARC32_COMPAT) += sys32.o sys_sparc32.o signal32.o
obj-$(CONFIG_BINFMT_ELF32) += binfmt_elf32.o
obj-$(CONFIG_BINFMT_AOUT32) += binfmt_aout32.o
diff --git a/arch/sparc64/kernel/ds.c b/arch/sparc64/kernel/ds.c
index b82c03a25d9..2e4114fba14 100644
--- a/arch/sparc64/kernel/ds.c
+++ b/arch/sparc64/kernel/ds.c
@@ -148,9 +148,11 @@ static void domain_shutdown_data(struct ldc_channel *lp,
static void domain_panic_data(struct ldc_channel *lp,
struct ds_cap_state *cp,
void *buf, int len);
+#ifdef CONFIG_HOTPLUG_CPU
static void dr_cpu_data(struct ldc_channel *lp,
struct ds_cap_state *cp,
void *buf, int len);
+#endif
static void ds_pri_data(struct ldc_channel *lp,
struct ds_cap_state *cp,
void *buf, int len);
@@ -171,10 +173,12 @@ struct ds_cap_state ds_states[] = {
.service_id = "domain-panic",
.data = domain_panic_data,
},
+#ifdef CONFIG_HOTPLUG_CPU
{
.service_id = "dr-cpu",
.data = dr_cpu_data,
},
+#endif
{
.service_id = "pri",
.data = ds_pri_data,
@@ -355,6 +359,7 @@ static void domain_panic_data(struct ldc_channel *lp,
panic("PANIC requested by LDOM manager.");
}
+#ifdef CONFIG_HOTPLUG_CPU
struct dr_cpu_tag {
__u64 req_num;
__u32 type;
@@ -395,54 +400,6 @@ static unsigned long kimage_addr_to_ra(void *p)
return kern_base + (val - KERNBASE);
}
-void ldom_startcpu_cpuid(unsigned int cpu, unsigned long thread_reg)
-{
- extern unsigned long sparc64_ttable_tl0;
- extern unsigned long kern_locked_tte_data;
- extern int bigkernel;
- struct hvtramp_descr *hdesc;
- unsigned long trampoline_ra;
- struct trap_per_cpu *tb;
- u64 tte_vaddr, tte_data;
- unsigned long hv_err;
-
- hdesc = kzalloc(sizeof(*hdesc), GFP_KERNEL);
- if (!hdesc) {
- printk(KERN_ERR PFX "ldom_startcpu_cpuid: Cannot allocate "
- "hvtramp_descr.\n");
- return;
- }
-
- hdesc->cpu = cpu;
- hdesc->num_mappings = (bigkernel ? 2 : 1);
-
- tb = &trap_block[cpu];
- tb->hdesc = hdesc;
-
- hdesc->fault_info_va = (unsigned long) &tb->fault_info;
- hdesc->fault_info_pa = kimage_addr_to_ra(&tb->fault_info);
-
- hdesc->thread_reg = thread_reg;
-
- tte_vaddr = (unsigned long) KERNBASE;
- tte_data = kern_locked_tte_data;
-
- hdesc->maps[0].vaddr = tte_vaddr;
- hdesc->maps[0].tte = tte_data;
- if (bigkernel) {
- tte_vaddr += 0x400000;
- tte_data += 0x400000;
- hdesc->maps[1].vaddr = tte_vaddr;
- hdesc->maps[1].tte = tte_data;
- }
-
- trampoline_ra = kimage_addr_to_ra(hv_cpu_startup);
-
- hv_err = sun4v_cpu_start(cpu, trampoline_ra,
- kimage_addr_to_ra(&sparc64_ttable_tl0),
- __pa(hdesc));
-}
-
/* DR cpu requests get queued onto the work list by the
* dr_cpu_data() callback. The list is protected by
* ds_lock, and processed by dr_cpu_process() in order.
@@ -704,6 +661,7 @@ static void dr_cpu_data(struct ldc_channel *lp,
schedule_work(&dr_cpu_work);
}
}
+#endif
struct ds_pri_msg {
__u64 req_num;
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 315eef0869b..833b284616a 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -281,6 +281,56 @@ static void smp_synchronize_one_tick(int cpu)
spin_unlock_irqrestore(&itc_sync_lock, flags);
}
+#if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)
+static void ldom_startcpu_cpuid(unsigned int cpu, unsigned long thread_reg)
+{
+ extern unsigned long sparc64_ttable_tl0;
+ extern unsigned long kern_locked_tte_data;
+ extern int bigkernel;
+ struct hvtramp_descr *hdesc;
+ unsigned long trampoline_ra;
+ struct trap_per_cpu *tb;
+ u64 tte_vaddr, tte_data;
+ unsigned long hv_err;
+
+ hdesc = kzalloc(sizeof(*hdesc), GFP_KERNEL);
+ if (!hdesc) {
+ printk(KERN_ERR PFX "ldom_startcpu_cpuid: Cannot allocate "
+ "hvtramp_descr.\n");
+ return;
+ }
+
+ hdesc->cpu = cpu;
+ hdesc->num_mappings = (bigkernel ? 2 : 1);
+
+ tb = &trap_block[cpu];
+ tb->hdesc = hdesc;
+
+ hdesc->fault_info_va = (unsigned long) &tb->fault_info;
+ hdesc->fault_info_pa = kimage_addr_to_ra(&tb->fault_info);
+
+ hdesc->thread_reg = thread_reg;
+
+ tte_vaddr = (unsigned long) KERNBASE;
+ tte_data = kern_locked_tte_data;
+
+ hdesc->maps[0].vaddr = tte_vaddr;
+ hdesc->maps[0].tte = tte_data;
+ if (bigkernel) {
+ tte_vaddr += 0x400000;
+ tte_data += 0x400000;
+ hdesc->maps[1].vaddr = tte_vaddr;
+ hdesc->maps[1].tte = tte_data;
+ }
+
+ trampoline_ra = kimage_addr_to_ra(hv_cpu_startup);
+
+ hv_err = sun4v_cpu_start(cpu, trampoline_ra,
+ kimage_addr_to_ra(&sparc64_ttable_tl0),
+ __pa(hdesc));
+}
+#endif
+
extern void sun4v_init_mondo_queues(int use_bootmem, int cpu, int alloc, int load);
extern unsigned long sparc64_cpu_startup;
@@ -309,7 +359,7 @@ static int __devinit smp_boot_one_cpu(unsigned int cpu)
/* Alloc the mondo queues, cpu will load them. */
sun4v_init_mondo_queues(0, cpu, 1, 0);
-#ifdef CONFIG_SUN_LDOMS
+#if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)
if (ldom_domaining_enabled)
ldom_startcpu_cpuid(cpu,
(unsigned long) cpu_new_thread);
generated by cgit (git 2.34.1) at 2024-11-09 06:15:14 +0000