Commit b14f5c10 authored by David S. Miller's avatar David S. Miller
Browse files

[SPARC64]: Fix build regressions added by dr-cpu changes. 



Do not select HOTPLUG_CPU from SUN_LDOMS, that causes
HOTPLUG_CPU to be selected even on non-SMP which is
illegal.

Only build hvtramp.o when SMP, just like trampoline.o

Protect dr-cpu code in ds.c with HOTPLUG_CPU.

Likewise move ldom_startcpu_cpuid() to smp.c and protect
it and the call site with SUN_LDOMS && HOTPLUG_CPU.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f8be339c

arch/sparc64/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -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.

arch/sparc64/kernel/Makefile

+2 −3
Original line number Diff line number Diff line
@@ -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

arch/sparc64/kernel/ds.c

+6 −48
Original line number Diff line number Diff line
@@ -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;

arch/sparc64/kernel/smp.c

+51 −1
Original line number Diff line number Diff line
@@ -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);

include/asm-sparc64/ldc.h

+0 −1
Original line number Diff line number Diff line
@@ -7,7 +7,6 @@ extern int ldom_domaining_enabled; 
extern void ldom_set_var(const char *var, const char *value);

extern void ldom_reboot(const char *boot_command);

extern void ldom_power_off(void);

extern void ldom_startcpu_cpuid(unsigned int cpu, unsigned long thread_reg);



/* The event handler will be evoked when link state changes

 * or data becomes available on the receive side.

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