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Merge tag 'v3.12-rc4' into sched/core

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Merge Linux v3.12-rc4 to fix a conflict and also to refresh the tree
before applying more scheduler patches.

Conflicts:
	arch/avr32/include/asm/Kbuild

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2013-10-09 12:36:13 +02:00
parent 6bfa687c19 d0e639c9e0
commit 37bf06375c
893 changed files with 8766 additions and 4841 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/powerpc/boot/Makefile
View File

@@ -74,7 +74,7 @@ src-wlib-$(CONFIG_8xx) += mpc8xx.c planetcore.c
src-wlib-$(CONFIG_PPC_82xx) += pq2.c fsl-soc.c planetcore.c
src-wlib-$(CONFIG_EMBEDDED6xx) += mv64x60.c mv64x60_i2c.c ugecon.c
src-plat-y := of.c
src-plat-y := of.c epapr.c
src-plat-$(CONFIG_40x) += fixed-head.S ep405.c cuboot-hotfoot.c \
treeboot-walnut.c cuboot-acadia.c \
cuboot-kilauea.c simpleboot.c \
@@ -97,7 +97,7 @@ src-plat-$(CONFIG_EMBEDDED6xx) += cuboot-pq2.c cuboot-mpc7448hpc2.c \
prpmc2800.c
src-plat-$(CONFIG_AMIGAONE) += cuboot-amigaone.c
src-plat-$(CONFIG_PPC_PS3) += ps3-head.S ps3-hvcall.S ps3.c
src-plat-$(CONFIG_EPAPR_BOOT) += epapr.c
src-plat-$(CONFIG_EPAPR_BOOT) += epapr.c epapr-wrapper.c
src-wlib := $(sort $(src-wlib-y))
src-plat := $(sort $(src-plat-y))

9
arch/powerpc/boot/epapr-wrapper.c Normal file
View File

@@ -0,0 +1,9 @@
extern void epapr_platform_init(unsigned long r3, unsigned long r4,
unsigned long r5, unsigned long r6,
unsigned long r7);
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
epapr_platform_init(r3, r4, r5, r6, r7);
}

4
arch/powerpc/boot/epapr.c
View File

@@ -48,8 +48,8 @@ static void platform_fixups(void)
fdt_addr, fdt_totalsize((void *)fdt_addr), ima_size);
}
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
void epapr_platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
epapr_magic = r6;
ima_size = r7;

16
arch/powerpc/boot/of.c
View File

@@ -26,6 +26,9 @@
static unsigned long claim_base;
void epapr_platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7);
static void *of_try_claim(unsigned long size)
{
unsigned long addr = 0;
@@ -61,7 +64,7 @@ static void of_image_hdr(const void *hdr)
}
}
void platform_init(unsigned long a1, unsigned long a2, void *promptr)
static void of_platform_init(unsigned long a1, unsigned long a2, void *promptr)
{
platform_ops.image_hdr = of_image_hdr;
platform_ops.malloc = of_try_claim;
@@ -81,3 +84,14 @@ void platform_init(unsigned long a1, unsigned long a2, void *promptr)
loader_info.initrd_size = a2;
}
}
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
/* Detect OF vs. ePAPR boot */
if (r5)
of_platform_init(r3, r4, (void *)r5);
else
epapr_platform_init(r3, r4, r5, r6, r7);
}

9
arch/powerpc/boot/wrapper
View File

@@ -148,18 +148,18 @@ make_space=y
case "$platform" in
pseries)
platformo=$object/of.o
platformo="$object/of.o $object/epapr.o"
link_address='0x4000000'
;;
maple)
platformo=$object/of.o
platformo="$object/of.o $object/epapr.o"
link_address='0x400000'
;;
pmac|chrp)
platformo=$object/of.o
platformo="$object/of.o $object/epapr.o"
;;
coff)
platformo="$object/crt0.o $object/of.o"
platformo="$object/crt0.o $object/of.o $object/epapr.o"
lds=$object/zImage.coff.lds
link_address='0x500000'
pie=
@@ -253,6 +253,7 @@ treeboot-iss4xx-mpic)
platformo="$object/treeboot-iss4xx.o"
;;
epapr)
platformo="$object/epapr.o $object/epapr-wrapper.o"
link_address='0x20000000'
pie=-pie
;;

4
arch/powerpc/include/asm/irq.h
View File

@@ -69,9 +69,9 @@ extern struct thread_info *softirq_ctx[NR_CPUS];
extern void irq_ctx_init(void);
extern void call_do_softirq(struct thread_info *tp);
extern int call_handle_irq(int irq, void *p1,
struct thread_info *tp, void *func);
extern void call_do_irq(struct pt_regs *regs, struct thread_info *tp);
extern void do_IRQ(struct pt_regs *regs);
extern void __do_irq(struct pt_regs *regs);
int irq_choose_cpu(const struct cpumask *mask);

4
arch/powerpc/include/asm/processor.h
View File

@@ -149,8 +149,6 @@ typedef struct {
struct thread_struct {
unsigned long ksp; /* Kernel stack pointer */
unsigned long ksp_limit; /* if ksp <= ksp_limit stack overflow */
#ifdef CONFIG_PPC64
unsigned long ksp_vsid;
#endif
@@ -162,6 +160,7 @@ struct thread_struct {
#endif
#ifdef CONFIG_PPC32
void *pgdir; /* root of page-table tree */
unsigned long ksp_limit; /* if ksp <= ksp_limit stack overflow */
#endif
#ifdef CONFIG_PPC_ADV_DEBUG_REGS
/*
@@ -321,7 +320,6 @@ struct thread_struct {
#else
#define INIT_THREAD { \
.ksp = INIT_SP, \
.ksp_limit = INIT_SP_LIMIT, \
.regs = (struct pt_regs *)INIT_SP - 1, /* XXX bogus, I think */ \
.fs = KERNEL_DS, \
.fpr = {{0}}, \

3
arch/powerpc/kernel/asm-offsets.c
View File

@@ -80,10 +80,11 @@ int main(void)
DEFINE(TASKTHREADPPR, offsetof(struct task_struct, thread.ppr));
#else
DEFINE(THREAD_INFO, offsetof(struct task_struct, stack));
DEFINE(THREAD_INFO_GAP, _ALIGN_UP(sizeof(struct thread_info), 16));
DEFINE(KSP_LIMIT, offsetof(struct thread_struct, ksp_limit));
#endif /* CONFIG_PPC64 */
DEFINE(KSP, offsetof(struct thread_struct, ksp));
DEFINE(KSP_LIMIT, offsetof(struct thread_struct, ksp_limit));
DEFINE(PT_REGS, offsetof(struct thread_struct, regs));
#ifdef CONFIG_BOOKE
DEFINE(THREAD_NORMSAVES, offsetof(struct thread_struct, normsave[0]));

2
arch/powerpc/kernel/iommu.c
View File

@@ -661,7 +661,7 @@ struct iommu_table *iommu_init_table(struct iommu_table *tbl, int nid)
/* number of bytes needed for the bitmap */
sz = BITS_TO_LONGS(tbl->it_size) * sizeof(unsigned long);
page = alloc_pages_node(nid, GFP_ATOMIC, get_order(sz));
page = alloc_pages_node(nid, GFP_KERNEL, get_order(sz));
if (!page)
panic("iommu_init_table: Can't allocate %ld bytes\n", sz);
tbl->it_map = page_address(page);

100
arch/powerpc/kernel/irq.c
View File

@@ -441,50 +441,6 @@ void migrate_irqs(void)
}
#endif
static inline void handle_one_irq(unsigned int irq)
{
struct thread_info *curtp, *irqtp;
unsigned long saved_sp_limit;
struct irq_desc *desc;
desc = irq_to_desc(irq);
if (!desc)
return;
/* Switch to the irq stack to handle this */
curtp = current_thread_info();
irqtp = hardirq_ctx[smp_processor_id()];
if (curtp == irqtp) {
/* We're already on the irq stack, just handle it */
desc->handle_irq(irq, desc);
return;
}
saved_sp_limit = current->thread.ksp_limit;
irqtp->task = curtp->task;
irqtp->flags = 0;
/* Copy the softirq bits in preempt_count so that the
* softirq checks work in the hardirq context. */
irqtp->preempt_count = (irqtp->preempt_count & ~SOFTIRQ_MASK) |
(curtp->preempt_count & SOFTIRQ_MASK);
current->thread.ksp_limit = (unsigned long)irqtp +
_ALIGN_UP(sizeof(struct thread_info), 16);
call_handle_irq(irq, desc, irqtp, desc->handle_irq);
current->thread.ksp_limit = saved_sp_limit;
irqtp->task = NULL;
/* Set any flag that may have been set on the
* alternate stack
*/
if (irqtp->flags)
set_bits(irqtp->flags, &curtp->flags);
}
static inline void check_stack_overflow(void)
{
#ifdef CONFIG_DEBUG_STACKOVERFLOW
@@ -501,9 +457,9 @@ static inline void check_stack_overflow(void)
#endif
}
void do_IRQ(struct pt_regs *regs)
void __do_irq(struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
struct irq_desc *desc;
unsigned int irq;
irq_enter();
@@ -519,18 +475,56 @@ void do_IRQ(struct pt_regs *regs)
*/
irq = ppc_md.get_irq();
/* We can hard enable interrupts now */
/* We can hard enable interrupts now to allow perf interrupts */
may_hard_irq_enable();
/* And finally process it */
if (irq != NO_IRQ)
handle_one_irq(irq);
else
if (unlikely(irq == NO_IRQ))
__get_cpu_var(irq_stat).spurious_irqs++;
else {
desc = irq_to_desc(irq);
if (likely(desc))
desc->handle_irq(irq, desc);
}
trace_irq_exit(regs);
irq_exit();
}
void do_IRQ(struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
struct thread_info *curtp, *irqtp;
/* Switch to the irq stack to handle this */
curtp = current_thread_info();
irqtp = hardirq_ctx[raw_smp_processor_id()];
/* Already there ? */
if (unlikely(curtp == irqtp)) {
__do_irq(regs);
set_irq_regs(old_regs);
return;
}
/* Prepare the thread_info in the irq stack */
irqtp->task = curtp->task;
irqtp->flags = 0;
/* Copy the preempt_count so that the [soft]irq checks work. */
irqtp->preempt_count = curtp->preempt_count;
/* Switch stack and call */
call_do_irq(regs, irqtp);
/* Restore stack limit */
irqtp->task = NULL;
/* Copy back updates to the thread_info */
if (irqtp->flags)
set_bits(irqtp->flags, &curtp->flags);
set_irq_regs(old_regs);
}
@@ -592,28 +586,22 @@ void irq_ctx_init(void)
memset((void *)softirq_ctx[i], 0, THREAD_SIZE);
tp = softirq_ctx[i];
tp->cpu = i;
tp->preempt_count = 0;
memset((void *)hardirq_ctx[i], 0, THREAD_SIZE);
tp = hardirq_ctx[i];
tp->cpu = i;
tp->preempt_count = HARDIRQ_OFFSET;
}
}
static inline void do_softirq_onstack(void)
{
struct thread_info *curtp, *irqtp;
unsigned long saved_sp_limit = current->thread.ksp_limit;
curtp = current_thread_info();
irqtp = softirq_ctx[smp_processor_id()];
irqtp->task = curtp->task;
irqtp->flags = 0;
current->thread.ksp_limit = (unsigned long)irqtp +
_ALIGN_UP(sizeof(struct thread_info), 16);
call_do_softirq(irqtp);
current->thread.ksp_limit = saved_sp_limit;
irqtp->task = NULL;
/* Set any flag that may have been set on the

25
arch/powerpc/kernel/misc_32.S
View File

@@ -36,26 +36,41 @@
.text
/*
* We store the saved ksp_limit in the unused part
* of the STACK_FRAME_OVERHEAD
*/
_GLOBAL(call_do_softirq)
mflr r0
stw r0,4(r1)
lwz r10,THREAD+KSP_LIMIT(r2)
addi r11,r3,THREAD_INFO_GAP
stwu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r3)
mr r1,r3
stw r10,8(r1)
stw r11,THREAD+KSP_LIMIT(r2)
bl __do_softirq
lwz r10,8(r1)
lwz r1,0(r1)
lwz r0,4(r1)
stw r10,THREAD+KSP_LIMIT(r2)
mtlr r0
blr
_GLOBAL(call_handle_irq)
_GLOBAL(call_do_irq)
mflr r0
stw r0,4(r1)
mtctr r6
stwu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r5)
mr r1,r5
bctrl
lwz r10,THREAD+KSP_LIMIT(r2)
addi r11,r3,THREAD_INFO_GAP
stwu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r4)
mr r1,r4
stw r10,8(r1)
stw r11,THREAD+KSP_LIMIT(r2)
bl __do_irq
lwz r10,8(r1)
lwz r1,0(r1)
lwz r0,4(r1)
stw r10,THREAD+KSP_LIMIT(r2)
mtlr r0
blr

10
arch/powerpc/kernel/misc_64.S
View File

@@ -40,14 +40,12 @@ _GLOBAL(call_do_softirq)
mtlr r0
blr
_GLOBAL(call_handle_irq)
ld r8,0(r6)
_GLOBAL(call_do_irq)
mflr r0
std r0,16(r1)
mtctr r8
stdu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r5)
mr r1,r5
bctrl
stdu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r4)
mr r1,r4
bl .__do_irq
ld r1,0(r1)
ld r0,16(r1)
mtlr r0

3
arch/powerpc/kernel/process.c
View File

@@ -1000,9 +1000,10 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
kregs = (struct pt_regs *) sp;
sp -= STACK_FRAME_OVERHEAD;
p->thread.ksp = sp;
#ifdef CONFIG_PPC32
p->thread.ksp_limit = (unsigned long)task_stack_page(p) +
_ALIGN_UP(sizeof(struct thread_info), 16);
#endif
#ifdef CONFIG_HAVE_HW_BREAKPOINT
p->thread.ptrace_bps[0] = NULL;
#endif

21
arch/powerpc/kernel/prom_init.c
View File

@@ -196,6 +196,8 @@ static int __initdata mem_reserve_cnt;
static cell_t __initdata regbuf[1024];
static bool rtas_has_query_cpu_stopped;
/*
* Error results ... some OF calls will return "-1" on error, some
@@ -1574,6 +1576,11 @@ static void __init prom_instantiate_rtas(void)
prom_setprop(rtas_node, "/rtas", "linux,rtas-entry",
&val, sizeof(val));
/* Check if it supports "query-cpu-stopped-state" */
if (prom_getprop(rtas_node, "query-cpu-stopped-state",
&val, sizeof(val)) != PROM_ERROR)
rtas_has_query_cpu_stopped = true;
#if defined(CONFIG_PPC_POWERNV) && defined(__BIG_ENDIAN__)
/* PowerVN takeover hack */
prom_rtas_data = base;
@@ -1815,6 +1822,18 @@ static void __init prom_hold_cpus(void)
= (void *) LOW_ADDR(__secondary_hold_acknowledge);
unsigned long secondary_hold = LOW_ADDR(__secondary_hold);
/*
* On pseries, if RTAS supports "query-cpu-stopped-state",
* we skip this stage, the CPUs will be started by the
* kernel using RTAS.
*/
if ((of_platform == PLATFORM_PSERIES ||
of_platform == PLATFORM_PSERIES_LPAR) &&
rtas_has_query_cpu_stopped) {
prom_printf("prom_hold_cpus: skipped\n");
return;
}
prom_debug("prom_hold_cpus: start...\n");
prom_debug(" 1) spinloop = 0x%x\n", (unsigned long)spinloop);
prom_debug(" 1) *spinloop = 0x%x\n", *spinloop);
@@ -3011,6 +3030,8 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
* On non-powermacs, put all CPUs in spin-loops.
*
* PowerMacs use a different mechanism to spin CPUs
*
* (This must be done after instanciating RTAS)
*/
if (of_platform != PLATFORM_POWERMAC &&
of_platform != PLATFORM_OPAL)

18
arch/powerpc/kernel/sysfs.c
View File

@@ -17,6 +17,7 @@
#include <asm/machdep.h>
#include <asm/smp.h>
#include <asm/pmc.h>
#include <asm/firmware.h>
#include "cacheinfo.h"
@@ -179,15 +180,25 @@ SYSFS_PMCSETUP(spurr, SPRN_SPURR);
SYSFS_PMCSETUP(dscr, SPRN_DSCR);
SYSFS_PMCSETUP(pir, SPRN_PIR);
/*
Lets only enable read for phyp resources and
enable write when needed with a separate function.
Lets be conservative and default to pseries.
*/
static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra);
static DEVICE_ATTR(spurr, 0400, show_spurr, NULL);
static DEVICE_ATTR(dscr, 0600, show_dscr, store_dscr);
static DEVICE_ATTR(purr, 0600, show_purr, store_purr);
static DEVICE_ATTR(purr, 0400, show_purr, store_purr);
static DEVICE_ATTR(pir, 0400, show_pir, NULL);
unsigned long dscr_default = 0;
EXPORT_SYMBOL(dscr_default);
static void add_write_permission_dev_attr(struct device_attribute *attr)
{
attr->attr.mode |= 0200;
}
static ssize_t show_dscr_default(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -394,8 +405,11 @@ static void register_cpu_online(unsigned int cpu)
if (cpu_has_feature(CPU_FTR_MMCRA))
device_create_file(s, &dev_attr_mmcra);
if (cpu_has_feature(CPU_FTR_PURR))
if (cpu_has_feature(CPU_FTR_PURR)) {
if (!firmware_has_feature(FW_FEATURE_LPAR))
add_write_permission_dev_attr(&dev_attr_purr);
device_create_file(s, &dev_attr_purr);
}
if (cpu_has_feature(CPU_FTR_SPURR))
device_create_file(s, &dev_attr_spurr);

97
arch/powerpc/kernel/tm.S
View File

@@ -79,6 +79,11 @@ _GLOBAL(tm_abort)
TABORT(R3)
blr
.section ".toc","aw"
DSCR_DEFAULT:
.tc dscr_default[TC],dscr_default
.section ".text"
/* void tm_reclaim(struct thread_struct *thread,
* unsigned long orig_msr,
@@ -123,6 +128,7 @@ _GLOBAL(tm_reclaim)
mr r15, r14
ori r15, r15, MSR_FP
li r16, MSR_RI
ori r16, r16, MSR_EE /* IRQs hard off */
andc r15, r15, r16
oris r15, r15, MSR_VEC@h
#ifdef CONFIG_VSX
@@ -187,11 +193,18 @@ dont_backup_fp:
std r1, PACATMSCRATCH(r13)
ld r1, PACAR1(r13)
/* Store the PPR in r11 and reset to decent value */
std r11, GPR11(r1) /* Temporary stash */
mfspr r11, SPRN_PPR
HMT_MEDIUM
/* Now get some more GPRS free */
std r7, GPR7(r1) /* Temporary stash */
std r12, GPR12(r1) /* '' '' '' */
ld r12, STACK_PARAM(0)(r1) /* Param 0, thread_struct * */
std r11, THREAD_TM_PPR(r12) /* Store PPR and free r11 */
addi r7, r12, PT_CKPT_REGS /* Thread's ckpt_regs */
/* Make r7 look like an exception frame so that we
@@ -203,15 +216,19 @@ dont_backup_fp:
SAVE_GPR(0, r7) /* user r0 */
SAVE_GPR(2, r7) /* user r2 */
SAVE_4GPRS(3, r7) /* user r3-r6 */
SAVE_4GPRS(8, r7) /* user r8-r11 */
SAVE_GPR(8, r7) /* user r8 */
SAVE_GPR(9, r7) /* user r9 */
SAVE_GPR(10, r7) /* user r10 */
ld r3, PACATMSCRATCH(r13) /* user r1 */
ld r4, GPR7(r1) /* user r7 */
ld r5, GPR12(r1) /* user r12 */
GET_SCRATCH0(6) /* user r13 */
ld r5, GPR11(r1) /* user r11 */
ld r6, GPR12(r1) /* user r12 */
GET_SCRATCH0(8) /* user r13 */
std r3, GPR1(r7)
std r4, GPR7(r7)
std r5, GPR12(r7)
std r6, GPR13(r7)
std r5, GPR11(r7)
std r6, GPR12(r7)
std r8, GPR13(r7)
SAVE_NVGPRS(r7) /* user r14-r31 */
@@ -234,14 +251,12 @@ dont_backup_fp:
std r6, _XER(r7)
/* ******************** TAR, PPR, DSCR ********** */
/* ******************** TAR, DSCR ********** */
mfspr r3, SPRN_TAR
mfspr r4, SPRN_PPR
mfspr r5, SPRN_DSCR
mfspr r4, SPRN_DSCR
std r3, THREAD_TM_TAR(r12)
std r4, THREAD_TM_PPR(r12)
std r5, THREAD_TM_DSCR(r12)
std r4, THREAD_TM_DSCR(r12)
/* MSR and flags: We don't change CRs, and we don't need to alter
* MSR.
@@ -258,7 +273,7 @@ dont_backup_fp:
std r3, THREAD_TM_TFHAR(r12)
std r4, THREAD_TM_TFIAR(r12)
/* AMR and PPR are checkpointed too, but are unsupported by Linux. */
/* AMR is checkpointed too, but is unsupported by Linux. */
/* Restore original MSR/IRQ state & clear TM mode */
ld r14, TM_FRAME_L0(r1) /* Orig MSR */
@@ -274,6 +289,12 @@ dont_backup_fp:
mtcr r4
mtlr r0
ld r2, 40(r1)
/* Load system default DSCR */
ld r4, DSCR_DEFAULT@toc(r2)
ld r0, 0(r4)
mtspr SPRN_DSCR, r0
blr
@@ -358,25 +379,24 @@ dont_restore_fp:
restore_gprs:
/* ******************** TAR, PPR, DSCR ********** */
ld r4, THREAD_TM_TAR(r3)
ld r5, THREAD_TM_PPR(r3)
ld r6, THREAD_TM_DSCR(r3)
mtspr SPRN_TAR, r4
mtspr SPRN_PPR, r5
mtspr SPRN_DSCR, r6
/* ******************** CR,LR,CCR,MSR ********** */
ld r3, _CTR(r7)
ld r4, _LINK(r7)
ld r5, _CCR(r7)
ld r6, _XER(r7)
ld r4, _CTR(r7)
ld r5, _LINK(r7)
ld r6, _CCR(r7)
ld r8, _XER(r7)
mtctr r3
mtlr r4
mtcr r5
mtxer r6
mtctr r4
mtlr r5
mtcr r6
mtxer r8
/* ******************** TAR ******************** */
ld r4, THREAD_TM_TAR(r3)
mtspr SPRN_TAR, r4
/* Load up the PPR and DSCR in GPRs only at this stage */
ld r5, THREAD_TM_DSCR(r3)
ld r6, THREAD_TM_PPR(r3)
/* Clear the MSR RI since we are about to change R1. EE is already off
*/
@@ -384,19 +404,26 @@ restore_gprs:
mtmsrd r4, 1
REST_4GPRS(0, r7) /* GPR0-3 */
REST_GPR(4, r7) /* GPR4-6 */
REST_GPR(5, r7)
REST_GPR(6, r7)
REST_GPR(4, r7) /* GPR4 */
REST_4GPRS(8, r7) /* GPR8-11 */
REST_2GPRS(12, r7) /* GPR12-13 */
REST_NVGPRS(r7) /* GPR14-31 */
ld r7, GPR7(r7) /* GPR7 */
/* Load up PPR and DSCR here so we don't run with user values for long
*/
mtspr SPRN_DSCR, r5
mtspr SPRN_PPR, r6
REST_GPR(5, r7) /* GPR5-7 */
REST_GPR(6, r7)
ld r7, GPR7(r7)
/* Commit register state as checkpointed state: */
TRECHKPT
HMT_MEDIUM
/* Our transactional state has now changed.
*
* Now just get out of here. Transactional (current) state will be
@@ -419,6 +446,12 @@ restore_gprs:
mtcr r4
mtlr r0
ld r2, 40(r1)
/* Load system default DSCR */
ld r4, DSCR_DEFAULT@toc(r2)
ld r0, 0(r4)
mtspr SPRN_DSCR, r0
blr
/* ****************************************************************** */

12
arch/powerpc/kernel/vio.c
View File

@@ -1530,11 +1530,15 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
const char *cp;
dn = dev->of_node;
if (!dn)
return -ENODEV;
if (!dn) {
strcat(buf, "\n");
return strlen(buf);
}
cp = of_get_property(dn, "compatible", NULL);
if (!cp)
return -ENODEV;
if (!cp) {
strcat(buf, "\n");
return strlen(buf);
}
return sprintf(buf, "vio:T%sS%s\n", vio_dev->type, cp);
}

58
arch/powerpc/lib/checksum_64.S
View File

@@ -226,19 +226,35 @@ _GLOBAL(csum_partial)
blr
.macro source
.macro srcnr
100:
.section __ex_table,"a"
.align 3
.llong 100b,.Lsrc_error
.llong 100b,.Lsrc_error_nr
.previous
.endm
.macro source
150:
.section __ex_table,"a"
.align 3
.llong 150b,.Lsrc_error
.previous
.endm
.macro dstnr
200:
.section __ex_table,"a"
.align 3
.llong 200b,.Ldest_error_nr
.previous
.endm
.macro dest
200:
250:
.section __ex_table,"a"
.align 3
.llong 200b,.Ldest_error
.llong 250b,.Ldest_error
.previous
.endm
@@ -269,16 +285,16 @@ _GLOBAL(csum_partial_copy_generic)
rldicl. r6,r3,64-1,64-2 /* r6 = (r3 & 0x3) >> 1 */
beq .Lcopy_aligned
li r7,4
sub r6,r7,r6
li r9,4
sub r6,r9,r6
mtctr r6
1:
source; lhz r6,0(r3) /* align to doubleword */
srcnr; lhz r6,0(r3) /* align to doubleword */
subi r5,r5,2
addi r3,r3,2
adde r0,r0,r6
dest; sth r6,0(r4)
dstnr; sth r6,0(r4)
addi r4,r4,2
bdnz 1b
@@ -392,10 +408,10 @@ dest; std r16,56(r4)
mtctr r6
3:
source; ld r6,0(r3)
srcnr; ld r6,0(r3)
addi r3,r3,8
adde r0,r0,r6
dest; std r6,0(r4)
dstnr; std r6,0(r4)
addi r4,r4,8
bdnz 3b
@@ -405,10 +421,10 @@ dest; std r6,0(r4)
srdi. r6,r5,2
beq .Lcopy_tail_halfword
source; lwz r6,0(r3)
srcnr; lwz r6,0(r3)
addi r3,r3,4
adde r0,r0,r6
dest; stw r6,0(r4)
dstnr; stw r6,0(r4)
addi r4,r4,4
subi r5,r5,4
@@ -416,10 +432,10 @@ dest; stw r6,0(r4)
srdi. r6,r5,1
beq .Lcopy_tail_byte
source; lhz r6,0(r3)
srcnr; lhz r6,0(r3)
addi r3,r3,2
adde r0,r0,r6
dest; sth r6,0(r4)
dstnr; sth r6,0(r4)
addi r4,r4,2
subi r5,r5,2
@@ -427,10 +443,10 @@ dest; sth r6,0(r4)
andi. r6,r5,1
beq .Lcopy_finish
source; lbz r6,0(r3)
srcnr; lbz r6,0(r3)
sldi r9,r6,8 /* Pad the byte out to 16 bits */
adde r0,r0,r9
dest; stb r6,0(r4)
dstnr; stb r6,0(r4)
.Lcopy_finish:
addze r0,r0 /* add in final carry */
@@ -440,6 +456,11 @@ dest; stb r6,0(r4)
blr
.Lsrc_error:
ld r14,STK_REG(R14)(r1)
ld r15,STK_REG(R15)(r1)
ld r16,STK_REG(R16)(r1)
addi r1,r1,STACKFRAMESIZE
.Lsrc_error_nr:
cmpdi 0,r7,0
beqlr
li r6,-EFAULT
@@ -447,6 +468,11 @@ dest; stb r6,0(r4)
blr
.Ldest_error:
ld r14,STK_REG(R14)(r1)
ld r15,STK_REG(R15)(r1)
ld r16,STK_REG(R16)(r1)
addi r1,r1,STACKFRAMESIZE
.Ldest_error_nr:
cmpdi 0,r8,0
beqlr
li r6,-EFAULT

3
arch/powerpc/lib/sstep.c
View File

@@ -1505,6 +1505,7 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr)
*/
if ((ra == 1) && !(regs->msr & MSR_PR) \
&& (val3 >= (regs->gpr[1] - STACK_INT_FRAME_SIZE))) {
#ifdef CONFIG_PPC32
/*
* Check if we will touch kernel sack overflow
*/
@@ -1513,7 +1514,7 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr)
err = -EINVAL;
break;
}
#endif /* CONFIG_PPC32 */
/*
* Check if we already set since that means we'll
* lose the previous value.

4
arch/powerpc/mm/init_64.c
View File

@@ -300,5 +300,9 @@ void vmemmap_free(unsigned long start, unsigned long end)
{
}
void register_page_bootmem_memmap(unsigned long section_nr,
struct page *start_page, unsigned long size)
{
}
#endif /* CONFIG_SPARSEMEM_VMEMMAP */

9
arch/powerpc/mm/mem.c
View File

@@ -297,12 +297,21 @@ void __init paging_init(void)
}
#endif /* ! CONFIG_NEED_MULTIPLE_NODES */
static void __init register_page_bootmem_info(void)
{
int i;
for_each_online_node(i)
register_page_bootmem_info_node(NODE_DATA(i));
}
void __init mem_init(void)
{
#ifdef CONFIG_SWIOTLB
swiotlb_init(0);
#endif
register_page_bootmem_info();
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
set_max_mapnr(max_pfn);
free_all_bootmem();

5
arch/powerpc/perf/power8-pmu.c
View File

@@ -199,6 +199,7 @@
#define MMCR1_UNIT_SHIFT(pmc) (60 - (4 * ((pmc) - 1)))
#define MMCR1_COMBINE_SHIFT(pmc) (35 - ((pmc) - 1))
#define MMCR1_PMCSEL_SHIFT(pmc) (24 - (((pmc) - 1)) * 8)
#define MMCR1_FAB_SHIFT 36
#define MMCR1_DC_QUAL_SHIFT 47
#define MMCR1_IC_QUAL_SHIFT 46
@@ -388,8 +389,8 @@ static int power8_compute_mmcr(u64 event[], int n_ev,
* the threshold bits are used for the match value.
*/
if (event_is_fab_match(event[i])) {
mmcr1 |= (event[i] >> EVENT_THR_CTL_SHIFT) &
EVENT_THR_CTL_MASK;
mmcr1 |= ((event[i] >> EVENT_THR_CTL_SHIFT) &
EVENT_THR_CTL_MASK) << MMCR1_FAB_SHIFT;
} else {
val = (event[i] >> EVENT_THR_CTL_SHIFT) & EVENT_THR_CTL_MASK;
mmcra |= val << MMCRA_THR_CTL_SHIFT;

26
arch/powerpc/platforms/pseries/smp.c
View File

@@ -233,17 +233,23 @@ static void __init smp_init_pseries(void)
alloc_bootmem_cpumask_var(&of_spin_mask);
/* Mark threads which are still spinning in hold loops. */
if (cpu_has_feature(CPU_FTR_SMT)) {
for_each_present_cpu(i) {
if (cpu_thread_in_core(i) == 0)
cpumask_set_cpu(i, of_spin_mask);
}
} else {
cpumask_copy(of_spin_mask, cpu_present_mask);
}
/*
* Mark threads which are still spinning in hold loops
*
* We know prom_init will not have started them if RTAS supports
* query-cpu-stopped-state.
*/
if (rtas_token("query-cpu-stopped-state") == RTAS_UNKNOWN_SERVICE) {
if (cpu_has_feature(CPU_FTR_SMT)) {
for_each_present_cpu(i) {
if (cpu_thread_in_core(i) == 0)
cpumask_set_cpu(i, of_spin_mask);
}
} else
cpumask_copy(of_spin_mask, cpu_present_mask);
cpumask_clear_cpu(boot_cpuid, of_spin_mask);
cpumask_clear_cpu(boot_cpuid, of_spin_mask);
}
/* Non-lpar has additional take/give timebase */
if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) {