Commit 45bfe98b authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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: default avatarLinus Torvalds <torvalds@osdl.org>
parents 9f5974c8 624cee31
...@@ -11,7 +11,8 @@ CFLAGS_btext.o += -fPIC ...@@ -11,7 +11,8 @@ CFLAGS_btext.o += -fPIC
endif endif
obj-y := semaphore.o cputable.o ptrace.o syscalls.o \ 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-y += vdso32/
obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \ obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \
signal_64.o ptrace32.o systbl.o \ signal_64.o ptrace32.o systbl.o \
...@@ -44,8 +45,7 @@ extra-$(CONFIG_FSL_BOOKE) := head_fsl_booke.o ...@@ -44,8 +45,7 @@ extra-$(CONFIG_FSL_BOOKE) := head_fsl_booke.o
extra-$(CONFIG_8xx) := head_8xx.o extra-$(CONFIG_8xx) := head_8xx.o
extra-y += vmlinux.lds extra-y += vmlinux.lds
obj-y += process.o init_task.o time.o \ obj-y += time.o prom.o traps.o setup-common.o udbg.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_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_PPC64) += misc_64.o dma_64.o iommu.o
obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o
......
...@@ -53,6 +53,7 @@ EXPORT_SYMBOL(io_page_mask); ...@@ -53,6 +53,7 @@ EXPORT_SYMBOL(io_page_mask);
#ifdef CONFIG_PPC_MULTIPLATFORM #ifdef CONFIG_PPC_MULTIPLATFORM
static void fixup_resource(struct resource *res, struct pci_dev *dev); static void fixup_resource(struct resource *res, struct pci_dev *dev);
static void do_bus_setup(struct pci_bus *bus); static void do_bus_setup(struct pci_bus *bus);
static void phbs_remap_io(void);
#endif #endif
/* pci_io_base -- the base address from which io bars are offsets. /* pci_io_base -- the base address from which io bars are offsets.
...@@ -251,6 +252,7 @@ void pcibios_free_controller(struct pci_controller *phb) ...@@ -251,6 +252,7 @@ void pcibios_free_controller(struct pci_controller *phb)
kfree(phb); kfree(phb);
} }
#ifndef CONFIG_PPC_ISERIES
void __devinit pcibios_claim_one_bus(struct pci_bus *b) void __devinit pcibios_claim_one_bus(struct pci_bus *b)
{ {
struct pci_dev *dev; struct pci_dev *dev;
...@@ -275,7 +277,6 @@ void __devinit pcibios_claim_one_bus(struct pci_bus *b) ...@@ -275,7 +277,6 @@ void __devinit pcibios_claim_one_bus(struct pci_bus *b)
EXPORT_SYMBOL_GPL(pcibios_claim_one_bus); EXPORT_SYMBOL_GPL(pcibios_claim_one_bus);
#endif #endif
#ifndef CONFIG_PPC_ISERIES
static void __init pcibios_claim_of_setup(void) static void __init pcibios_claim_of_setup(void)
{ {
struct pci_bus *b; struct pci_bus *b;
...@@ -1218,7 +1219,7 @@ int remap_bus_range(struct pci_bus *bus) ...@@ -1218,7 +1219,7 @@ int remap_bus_range(struct pci_bus *bus)
} }
EXPORT_SYMBOL(remap_bus_range); EXPORT_SYMBOL(remap_bus_range);
void phbs_remap_io(void) static void phbs_remap_io(void)
{ {
struct pci_controller *hose, *tmp; struct pci_controller *hose, *tmp;
......
...@@ -201,13 +201,13 @@ int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs) ...@@ -201,13 +201,13 @@ int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs)
} }
#endif /* CONFIG_SPE */ #endif /* CONFIG_SPE */
#ifndef CONFIG_SMP
/* /*
* If we are doing lazy switching of CPU state (FP, altivec or SPE), * If we are doing lazy switching of CPU state (FP, altivec or SPE),
* and the current task has some state, discard it. * 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(); preempt_disable();
if (last_task_used_math == current) if (last_task_used_math == current)
last_task_used_math = NULL; last_task_used_math = NULL;
...@@ -220,9 +220,10 @@ static inline void discard_lazy_cpu_state(void) ...@@ -220,9 +220,10 @@ static inline void discard_lazy_cpu_state(void)
last_task_used_spe = NULL; last_task_used_spe = NULL;
#endif #endif
preempt_enable(); preempt_enable();
#endif /* CONFIG_SMP */
} }
#endif /* CONFIG_SMP */
#ifdef CONFIG_PPC_MERGE /* XXX for now */
int set_dabr(unsigned long dabr) int set_dabr(unsigned long dabr)
{ {
if (ppc_md.set_dabr) if (ppc_md.set_dabr)
...@@ -231,6 +232,7 @@ int set_dabr(unsigned long dabr) ...@@ -231,6 +232,7 @@ int set_dabr(unsigned long dabr)
mtspr(SPRN_DABR, dabr); mtspr(SPRN_DABR, dabr);
return 0; return 0;
} }
#endif
#ifdef CONFIG_PPC64 #ifdef CONFIG_PPC64
DEFINE_PER_CPU(struct cpu_usage, cpu_usage_array); DEFINE_PER_CPU(struct cpu_usage, cpu_usage_array);
......
...@@ -1100,17 +1100,37 @@ static int __init early_init_dt_scan_memory(unsigned long node, ...@@ -1100,17 +1100,37 @@ static int __init early_init_dt_scan_memory(unsigned long node,
static void __init early_reserve_mem(void) static void __init early_reserve_mem(void)
{ {
unsigned long base, size; u64 base, size;
unsigned long *reserve_map; 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); 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) { while (1) {
base = *(reserve_map++); base = *(reserve_map++);
size = *(reserve_map++); size = *(reserve_map++);
if (size == 0) if (size == 0)
break; break;
DBG("reserving: %lx -> %lx\n", base, size); DBG("reserving: %llx -> %llx\n", base, size);
lmb_reserve(base, size); lmb_reserve(base, size);
} }
......
...@@ -137,8 +137,8 @@ struct prom_t { ...@@ -137,8 +137,8 @@ struct prom_t {
}; };
struct mem_map_entry { struct mem_map_entry {
unsigned long base; u64 base;
unsigned long size; u64 size;
}; };
typedef u32 cell_t; typedef u32 cell_t;
...@@ -897,9 +897,9 @@ static unsigned long __init prom_next_cell(int s, cell_t **cellp) ...@@ -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 * If problems seem to show up, it would be a good start to track
* them down. * 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); unsigned long cnt = RELOC(mem_reserve_cnt);
if (size == 0) if (size == 0)
......
...@@ -497,6 +497,15 @@ static long restore_user_regs(struct pt_regs *regs, ...@@ -497,6 +497,15 @@ static long restore_user_regs(struct pt_regs *regs,
if (err) if (err)
return 1; 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 /* force the process to reload the FP registers from
current->thread when it next does FP instructions */ current->thread when it next does FP instructions */
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1); regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1);
...@@ -538,18 +547,6 @@ static long restore_user_regs(struct pt_regs *regs, ...@@ -538,18 +547,6 @@ static long restore_user_regs(struct pt_regs *regs,
return 1; return 1;
#endif /* CONFIG_SPE */ #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; return 0;
} }
......
...@@ -207,10 +207,20 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig, ...@@ -207,10 +207,20 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
if (!sig) if (!sig)
regs->gpr[13] = save_r13; regs->gpr[13] = save_r13;
err |= __copy_from_user(&current->thread.fpr, &sc->fp_regs, FP_REGS_SIZE);
if (set != NULL) if (set != NULL)
err |= __get_user(set->sig[0], &sc->oldmask); 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 #ifdef CONFIG_ALTIVEC
err |= __get_user(v_regs, &sc->v_regs); err |= __get_user(v_regs, &sc->v_regs);
err |= __get_user(msr, &sc->gp_regs[PT_MSR]); 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, ...@@ -229,14 +239,6 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
current->thread.vrsave = 0; current->thread.vrsave = 0;
#endif /* CONFIG_ALTIVEC */ #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 */ /* Force reload of FP/VEC */
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC); regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC);
......
...@@ -142,7 +142,7 @@ static void cbe_idle(void) ...@@ -142,7 +142,7 @@ static void cbe_idle(void)
} }
} }
int cbe_system_reset_exception(struct pt_regs *regs) static int cbe_system_reset_exception(struct pt_regs *regs)
{ {
switch (regs->msr & SRR1_WAKEMASK) { switch (regs->msr & SRR1_WAKEMASK) {
case SRR1_WAKEEE: case SRR1_WAKEEE:
......
...@@ -57,7 +57,7 @@ ...@@ -57,7 +57,7 @@
#define DBG(fmt...) #define DBG(fmt...)
#endif #endif
void cell_show_cpuinfo(struct seq_file *m) static void cell_show_cpuinfo(struct seq_file *m)
{ {
struct device_node *root; struct device_node *root;
const char *model = ""; const char *model = "";
......
...@@ -29,7 +29,9 @@ ...@@ -29,7 +29,9 @@
* value of the spu_status register after the SPU has stopped. * value of the spu_status register after the SPU has stopped.
* *
*/ */
long do_spu_run(struct file *filp, __u32 __user *unpc, __u32 __user *ustatus) static long do_spu_run(struct file *filp,
__u32 __user *unpc,
__u32 __user *ustatus)
{ {
long ret; long ret;
struct spufs_inode_info *i; struct spufs_inode_info *i;
......
EXTRA_CFLAGS += -mno-minimal-toc EXTRA_CFLAGS += -mno-minimal-toc
obj-y += hvlog.o hvlpconfig.o lpardata.o setup.o mf.o lpevents.o \ obj-y += hvlog.o hvlpconfig.o lpardata.o setup.o mf.o lpevents.o \
hvcall.o proc.o htab.o iommu.o misc.o hvcall.o proc.o htab.o iommu.o misc.o irq.o
obj-$(CONFIG_PCI) += pci.o irq.o vpdinfo.o obj-$(CONFIG_PCI) += pci.o vpdinfo.o
obj-$(CONFIG_IBMVIO) += vio.o obj-$(CONFIG_IBMVIO) += vio.o
obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_VIOPATH) += viopath.o obj-$(CONFIG_VIOPATH) += viopath.o
......
...@@ -34,6 +34,8 @@ ...@@ -34,6 +34,8 @@
#include <asm/pci-bridge.h> #include <asm/pci-bridge.h>
#include <asm/iseries/hv_call_xm.h> #include <asm/iseries/hv_call_xm.h>
#include "iommu.h"
extern struct list_head iSeries_Global_Device_List; extern struct list_head iSeries_Global_Device_List;
......
#ifndef _PLATFORMS_ISERIES_IOMMU_H
#define _PLATFORMS_ISERIES_IOMMU_H
/*
* Copyright (C) 2005 Stephen Rothwell, IBM Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the:
* Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*/
struct device_node;
struct iommu_table;
/* Creates table for an individual device node */
extern void iommu_devnode_init_iSeries(struct device_node *dn);
/* Get table parameters from HV */
extern void iommu_table_getparms_iSeries(unsigned long busno,
unsigned char slotno, unsigned char virtbus,
struct iommu_table *tbl);
#endif /* _PLATFORMS_ISERIES_IOMMU_H */
...@@ -48,6 +48,8 @@ ...@@ -48,6 +48,8 @@
extern void iSeries_smp_message_recv(struct pt_regs *); extern void iSeries_smp_message_recv(struct pt_regs *);
#endif #endif
#ifdef CONFIG_PCI
enum pci_event_type { enum pci_event_type {
pe_bus_created = 0, /* PHB has been created */ pe_bus_created = 0, /* PHB has been created */
pe_bus_error = 1, /* PHB has failed */ pe_bus_error = 1, /* PHB has failed */
...@@ -147,20 +149,11 @@ static void int_received(struct pci_event *event, struct pt_regs *regs) ...@@ -147,20 +149,11 @@ static void int_received(struct pci_event *event, struct pt_regs *regs)
static void pci_event_handler(struct HvLpEvent *event, struct pt_regs *regs) static void pci_event_handler(struct HvLpEvent *event, struct pt_regs *regs)
{ {
if (event && (event->xType == HvLpEvent_Type_PciIo)) { if (event && (event->xType == HvLpEvent_Type_PciIo)) {
switch (event->xFlags.xFunction) { if (hvlpevent_is_int(event))
case HvLpEvent_Function_Int:
int_received((struct pci_event *)event, regs); int_received((struct pci_event *)event, regs);
break; else
case HvLpEvent_Function_Ack:
printk(KERN_ERR printk(KERN_ERR
"pci_event_handler: unexpected ack received\n"); "pci_event_handler: unexpected ack received\n");
break;
default:
printk(KERN_ERR
"pci_event_handler: unexpected event function %d\n",
(int)event->xFlags.xFunction);
break;
}
} else if (event) } else if (event)
printk(KERN_ERR printk(KERN_ERR
"pci_event_handler: Unrecognized PCI event type 0x%x\n", "pci_event_handler: Unrecognized PCI event type 0x%x\n",
...@@ -334,6 +327,8 @@ int __init iSeries_allocate_IRQ(HvBusNumber bus, ...@@ -334,6 +327,8 @@ int __init iSeries_allocate_IRQ(HvBusNumber bus,
return virtirq; return virtirq;
} }
#endif /* CONFIG_PCI */
/* /*
* Get the next pending IRQ. * Get the next pending IRQ.
*/ */
...@@ -353,6 +348,7 @@ int iSeries_get_irq(struct pt_regs *regs) ...@@ -353,6 +348,7 @@ int iSeries_get_irq(struct pt_regs *regs)
if (hvlpevent_is_pending()) if (hvlpevent_is_pending())
process_hvlpevents(regs); process_hvlpevents(regs);
#ifdef CONFIG_PCI
if (num_pending_irqs) { if (num_pending_irqs) {
spin_lock(&pending_irqs_lock); spin_lock(&pending_irqs_lock);
for (irq = 0; irq < NR_IRQS; irq++) { for (irq = 0; irq < NR_IRQS; irq++) {
...@@ -366,6 +362,7 @@ int iSeries_get_irq(struct pt_regs *regs) ...@@ -366,6 +362,7 @@ int iSeries_get_irq(struct pt_regs *regs)
if (irq >= NR_IRQS) if (irq >= NR_IRQS)
irq = -2; irq = -2;
} }
#endif
return irq; return irq;
} }
...@@ -93,10 +93,7 @@ struct ItLpNaca itLpNaca = { ...@@ -93,10 +93,7 @@ struct ItLpNaca itLpNaca = {
.xPirEnvironMode = 0, /* Piranha stuff */ .xPirEnvironMode = 0, /* Piranha stuff */
.xPirConsoleMode = 0, .xPirConsoleMode = 0,
.xPirDasdMode = 0, .xPirDasdMode = 0,
.xLparInstalled = 0, .flags = 0,
.xSysPartitioned = 0,
.xHwSyncedTBs = 0,
.xIntProcUtilHmt = 0,
.xSpVpdFormat = 0, .xSpVpdFormat = 0,
.xIntProcRatio = 0, .xIntProcRatio = 0,
.xPlicVrmIndex = 0, /* VRM index of PLIC */ .xPlicVrmIndex = 0, /* VRM index of PLIC */
......
...@@ -53,7 +53,7 @@ static struct HvLpEvent * get_next_hvlpevent(void) ...@@ -53,7 +53,7 @@ static struct HvLpEvent * get_next_hvlpevent(void)
struct HvLpEvent * event; struct HvLpEvent * event;
event = (struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr; event = (struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr;
if (event->xFlags.xValid) { if (hvlpevent_is_valid(event)) {
/* rmb() needed only for weakly consistent machines (regatta) */ /* rmb() needed only for weakly consistent machines (regatta) */
rmb(); rmb();
/* Set pointer to next potential event */ /* Set pointer to next potential event */
...@@ -84,7 +84,7 @@ int hvlpevent_is_pending(void) ...@@ -84,7 +84,7 @@ int hvlpevent_is_pending(void)
next_event = (struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr; next_event = (struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr;
return next_event->xFlags.xValid | return hvlpevent_is_valid(next_event) ||
hvlpevent_queue.xPlicOverflowIntPending; hvlpevent_queue.xPlicOverflowIntPending;
} }
...@@ -101,18 +101,18 @@ static void hvlpevent_clear_valid(struct HvLpEvent * event) ...@@ -101,18 +101,18 @@ static void hvlpevent_clear_valid(struct HvLpEvent * event)
switch (extra) { switch (extra) {
case 3: case 3:
tmp = (struct HvLpEvent*)((char*)event + 3 * LpEventAlign); tmp = (struct HvLpEvent*)((char*)event + 3 * LpEventAlign);
tmp->xFlags.xValid = 0; hvlpevent_invalidate(tmp);
case 2: case 2:
tmp = (struct HvLpEvent*)((char*)event + 2 * LpEventAlign); tmp = (struct HvLpEvent*)((char*)event + 2 * LpEventAlign);
tmp->xFlags.xValid = 0; hvlpevent_invalidate(tmp);
case 1: case 1:
tmp = (struct HvLpEvent*)((char*)event + 1 * LpEventAlign); tmp = (struct HvLpEvent*)((char*)event + 1 * LpEventAlign);
tmp->xFlags.xValid = 0; hvlpevent_invalidate(tmp);
} }
mb(); mb();
event->xFlags.xValid = 0; hvlpevent_invalidate(event);
} }
void process_hvlpevents(struct pt_regs *regs) void process_hvlpevents(struct pt_regs *regs)
......
...@@ -251,10 +251,7 @@ static struct pending_event *new_pending_event(void) ...@@ -251,10 +251,7 @@ static struct pending_event *new_pending_event(void)
} }
memset(ev, 0, sizeof(struct pending_event)); memset(ev, 0, sizeof(struct pending_event));
hev = &ev->event.hp_lp_event; hev = &ev->event.hp_lp_event;
hev->xFlags.xValid = 1; hev->flags = HV_LP_EVENT_VALID | HV_LP_EVENT_DO_ACK | HV_LP_EVENT_INT;
hev->xFlags.xAckType = HvLpEvent_AckType_ImmediateAck;
hev->xFlags.xAckInd = HvLpEvent_AckInd_DoAck;
hev->xFlags.xFunction = HvLpEvent_Function_Int;
hev->xType = HvLpEvent_Type_MachineFac; hev->xType = HvLpEvent_Type_MachineFac;
hev->xSourceLp = HvLpConfig_getLpIndex(); hev->xSourceLp = HvLpConfig_getLpIndex();
hev->xTargetLp = primary_lp; hev->xTargetLp = primary_lp;
...@@ -518,17 +515,10 @@ static void handle_ack(struct io_mf_lp_event *event) ...@@ -518,17 +515,10 @@ static void handle_ack(struct io_mf_lp_event *event)
static void hv_handler(struct HvLpEvent *event, struct pt_regs *regs) static void hv_handler(struct HvLpEvent *event, struct pt_regs *regs)
{