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Commit d9089c29 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (25 commits)
  powerpc: Disable 64K hugetlb support when doing 64K SPU mappings
  powerpc/powermac: Fixup default serial port device for pmac_zilog
  powerpc/powermac: Use sane default baudrate for SCC debugging
  powerpc/mm: Implement _PAGE_SPECIAL & pte_special() for 64-bit
  powerpc: Show processor cache information in sysfs
  powerpc: Make core id information available to userspace
  powerpc: Make core sibling information available to userspace
  powerpc/vio: More fallout from dma_mapping_error API change
  ibmveth: Fix multiple errors with dma_mapping_error conversion
  powerpc/pseries: Fix CMO sysdev attribute API change fallout
  powerpc: Enable tracehook for the architecture
  powerpc: Add TIF_NOTIFY_RESUME support for tracehook
  powerpc: Add asm/syscall.h with the tracehook entry points
  powerpc: Make syscall tracing use tracehook.h helpers
  powerpc: Call tracehook_signal_handler() when setting up signal frames
  powerpc: Update cpu_sibling_maps dynamically
  powerpc: register_cpu_online should be __cpuinit
  powerpc: kill useless SMT code in prom_hold_cpus
  powerpc: Fix 8xx build failure
  powerpc: Fix vio build warnings
  ...
parents bda426f5 00df438e

arch/powerpc/Kconfig

+1 −0
Original line number Original line Diff line number Diff line
@@ -117,6 +117,7 @@ config PPC 
	select HAVE_KPROBES

	select HAVE_KPROBES

	select HAVE_ARCH_KGDB

	select HAVE_ARCH_KGDB

	select HAVE_KRETPROBES

	select HAVE_KRETPROBES

	select HAVE_ARCH_TRACEHOOK

	select HAVE_LMB

	select HAVE_LMB

	select HAVE_DMA_ATTRS if PPC64

	select HAVE_DMA_ATTRS if PPC64

	select USE_GENERIC_SMP_HELPERS if SMP

	select USE_GENERIC_SMP_HELPERS if SMP

arch/powerpc/kernel/entry_32.S

+11 −6
Original line number Original line Diff line number Diff line
@@ -148,7 +148,7 @@ transfer_to_handler: 
	/* Check to see if the dbcr0 register is set up to debug.  Use the

	/* Check to see if the dbcr0 register is set up to debug.  Use the

	   internal debug mode bit to do this. */

	   internal debug mode bit to do this. */

	lwz	r12,THREAD_DBCR0(r12)

	lwz	r12,THREAD_DBCR0(r12)

	andis.	r12,r12,(DBCR0_IDM  | DBSR_DAC1R | DBSR_DAC1W)@h

	andis.	r12,r12,DBCR0_IDM@h

	beq+	3f

	beq+	3f

	/* From user and task is ptraced - load up global dbcr0 */

	/* From user and task is ptraced - load up global dbcr0 */

	li	r12,-1			/* clear all pending debug events */

	li	r12,-1			/* clear all pending debug events */
@@ -292,7 +292,7 @@ syscall_exit_cont: 
	/* If the process has its own DBCR0 value, load it up.  The internal

	/* If the process has its own DBCR0 value, load it up.  The internal

	   debug mode bit tells us that dbcr0 should be loaded. */

	   debug mode bit tells us that dbcr0 should be loaded. */

	lwz	r0,THREAD+THREAD_DBCR0(r2)

	lwz	r0,THREAD+THREAD_DBCR0(r2)

	andis.	r10,r0,(DBCR0_IDM  | DBSR_DAC1R | DBSR_DAC1W)@h

	andis.	r10,r0,DBCR0_IDM@h

	bnel-	load_dbcr0

	bnel-	load_dbcr0

#endif

#endif

#ifdef CONFIG_44x

#ifdef CONFIG_44x
@@ -343,7 +343,12 @@ syscall_dotrace: 
	stw	r0,_TRAP(r1)

	stw	r0,_TRAP(r1)

	addi	r3,r1,STACK_FRAME_OVERHEAD

	addi	r3,r1,STACK_FRAME_OVERHEAD

	bl	do_syscall_trace_enter

	bl	do_syscall_trace_enter

	lwz	r0,GPR0(r1)	/* Restore original registers */

	/*

	 * Restore argument registers possibly just changed.

	 * We use the return value of do_syscall_trace_enter

	 * for call number to look up in the table (r0).

	 */

	mr	r0,r3

	lwz	r3,GPR3(r1)

	lwz	r3,GPR3(r1)

	lwz	r4,GPR4(r1)

	lwz	r4,GPR4(r1)

	lwz	r5,GPR5(r1)

	lwz	r5,GPR5(r1)
@@ -720,7 +725,7 @@ restore_user: 
	/* Check whether this process has its own DBCR0 value.  The internal

	/* Check whether this process has its own DBCR0 value.  The internal

	   debug mode bit tells us that dbcr0 should be loaded. */

	   debug mode bit tells us that dbcr0 should be loaded. */

	lwz	r0,THREAD+THREAD_DBCR0(r2)

	lwz	r0,THREAD+THREAD_DBCR0(r2)

	andis.	r10,r0,(DBCR0_IDM  | DBSR_DAC1R | DBSR_DAC1W)@h

	andis.	r10,r0,DBCR0_IDM@h

	bnel-	load_dbcr0

	bnel-	load_dbcr0

#endif

#endif
@@ -1055,8 +1060,8 @@ do_user_signal: /* r10 contains MSR_KERNEL here */ 
	SAVE_NVGPRS(r1)

	SAVE_NVGPRS(r1)

	rlwinm	r3,r3,0,0,30

	rlwinm	r3,r3,0,0,30

	stw	r3,_TRAP(r1)

	stw	r3,_TRAP(r1)

2:	li	r3,0

2:	addi	r3,r1,STACK_FRAME_OVERHEAD

	addi	r4,r1,STACK_FRAME_OVERHEAD

	mr	r4,r9

	bl	do_signal

	bl	do_signal

	REST_NVGPRS(r1)

	REST_NVGPRS(r1)

	b	recheck

	b	recheck

arch/powerpc/kernel/entry_64.S

+7 −3
Original line number Original line Diff line number Diff line
@@ -214,7 +214,12 @@ syscall_dotrace: 
	bl	.save_nvgprs

	bl	.save_nvgprs

	addi	r3,r1,STACK_FRAME_OVERHEAD

	addi	r3,r1,STACK_FRAME_OVERHEAD

	bl	.do_syscall_trace_enter

	bl	.do_syscall_trace_enter

	ld	r0,GPR0(r1)	/* Restore original registers */

	/*

	 * Restore argument registers possibly just changed.

	 * We use the return value of do_syscall_trace_enter

	 * for the call number to look up in the table (r0).

	 */

	mr	r0,r3

	ld	r3,GPR3(r1)

	ld	r3,GPR3(r1)

	ld	r4,GPR4(r1)

	ld	r4,GPR4(r1)

	ld	r5,GPR5(r1)

	ld	r5,GPR5(r1)
@@ -638,8 +643,7 @@ user_work: 
	b	.ret_from_except_lite

	b	.ret_from_except_lite





1:	bl	.save_nvgprs

1:	bl	.save_nvgprs

	li	r3,0

	addi	r3,r1,STACK_FRAME_OVERHEAD

	addi	r4,r1,STACK_FRAME_OVERHEAD

	bl	.do_signal

	bl	.do_signal

	b	.ret_from_except

	b	.ret_from_except

arch/powerpc/kernel/legacy_serial.c

+17 −27
Original line number Original line Diff line number Diff line
@@ -493,18 +493,18 @@ static int __init serial_dev_init(void) 
device_initcall(serial_dev_init);

device_initcall(serial_dev_init);









#ifdef CONFIG_SERIAL_8250_CONSOLE

/*

/*

 * This is called very early, as part of console_init() (typically just after

 * This is called very early, as part of console_init() (typically just after

 * time_init()). This function is respondible for trying to find a good

 * time_init()). This function is respondible for trying to find a good

 * default console on serial ports. It tries to match the open firmware

 * default console on serial ports. It tries to match the open firmware

 * default output with one of the available serial console drivers, either

 * default output with one of the available serial console drivers that have

 * one of the platform serial ports that have been probed earlier by

 * been probed earlier by find_legacy_serial_ports()

 * find_legacy_serial_ports() or some more platform specific ones.

 */

 */

static int __init check_legacy_serial_console(void)

static int __init check_legacy_serial_console(void)

{

{

	struct device_node *prom_stdout = NULL;

	struct device_node *prom_stdout = NULL;

	int speed = 0, offset = 0;

	int i, speed = 0, offset = 0;

	const char *name;

	const char *name;

	const u32 *spd;

	const u32 *spd;
@@ -548,11 +548,9 @@ static int __init check_legacy_serial_console(void) 
	if (spd)

	if (spd)

		speed = *spd;

		speed = *spd;





	if (0)

	if (strcmp(name, "serial") != 0)

		;

		goto not_found;

#ifdef CONFIG_SERIAL_8250_CONSOLE



	else if (strcmp(name, "serial") == 0) {

		int i;

	/* Look for it in probed array */

	/* Look for it in probed array */

	for (i = 0; i < legacy_serial_count; i++) {

	for (i = 0; i < legacy_serial_count; i++) {

		if (prom_stdout != legacy_serial_infos[i].np)

		if (prom_stdout != legacy_serial_infos[i].np)
@@ -563,16 +561,7 @@ static int __init check_legacy_serial_console(void) 
	}

	}

	if (i >= legacy_serial_count)

	if (i >= legacy_serial_count)

		goto not_found;

		goto not_found;

	}



#endif /* CONFIG_SERIAL_8250_CONSOLE */

#ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE

	else if (strcmp(name, "ch-a") == 0)

		offset = 0;

	else if (strcmp(name, "ch-b") == 0)

		offset = 1;

#endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */

	else

		goto not_found;

	of_node_put(prom_stdout);

	of_node_put(prom_stdout);





	DBG("Found serial console at ttyS%d\n", offset);

	DBG("Found serial console at ttyS%d\n", offset);
@@ -591,3 +580,4 @@ static int __init check_legacy_serial_console(void) 
}

}

console_initcall(check_legacy_serial_console);

console_initcall(check_legacy_serial_console);





#endif /* CONFIG_SERIAL_8250_CONSOLE */

arch/powerpc/kernel/process.c

+4 −4
Original line number Original line Diff line number Diff line
@@ -254,7 +254,7 @@ void do_dabr(struct pt_regs *regs, unsigned long address, 
		return;

		return;





	/* Clear the DAC and struct entries.  One shot trigger */

	/* Clear the DAC and struct entries.  One shot trigger */

#if (defined(CONFIG_44x) || defined(CONFIG_BOOKE))

#if defined(CONFIG_BOOKE)

	mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) & ~(DBSR_DAC1R | DBSR_DAC1W

	mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) & ~(DBSR_DAC1R | DBSR_DAC1W

							| DBCR0_IDM));

							| DBCR0_IDM));

#endif

#endif
@@ -286,7 +286,7 @@ int set_dabr(unsigned long dabr) 
	mtspr(SPRN_DABR, dabr);

	mtspr(SPRN_DABR, dabr);

#endif

#endif





#if defined(CONFIG_44x) || defined(CONFIG_BOOKE)

#if defined(CONFIG_BOOKE)

	mtspr(SPRN_DAC1, dabr);

	mtspr(SPRN_DAC1, dabr);

#endif

#endif
@@ -373,7 +373,7 @@ struct task_struct *__switch_to(struct task_struct *prev, 
	if (unlikely(__get_cpu_var(current_dabr) != new->thread.dabr))

	if (unlikely(__get_cpu_var(current_dabr) != new->thread.dabr))

		set_dabr(new->thread.dabr);

		set_dabr(new->thread.dabr);





#if defined(CONFIG_44x) || defined(CONFIG_BOOKE)

#if defined(CONFIG_BOOKE)

	/* If new thread DAC (HW breakpoint) is the same then leave it */

	/* If new thread DAC (HW breakpoint) is the same then leave it */

	if (new->thread.dabr)

	if (new->thread.dabr)

		set_dabr(new->thread.dabr);

		set_dabr(new->thread.dabr);
@@ -568,7 +568,7 @@ void flush_thread(void) 
		current->thread.dabr = 0;

		current->thread.dabr = 0;

		set_dabr(0);

		set_dabr(0);





#if defined(CONFIG_44x) || defined(CONFIG_BOOKE)

#if defined(CONFIG_BOOKE)

		current->thread.dbcr0 &= ~(DBSR_DAC1R | DBSR_DAC1W);

		current->thread.dbcr0 &= ~(DBSR_DAC1R | DBSR_DAC1W);

#endif

#endif

	}

	}