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Message-ID: <alpine.LFD.1.10.0805101935400.3197@apollo.tec.linutronix.de>
Date: Sat, 10 May 2008 19:41:52 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: Linus Torvalds <torvalds@...ux-foundation.org>
cc: LKML <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>
Subject: [GIT pull] x86 updates for 2.6.26
Linus,
please pull x86 updates from:
ssh://master.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86.git for-linus
Thanks,
tglx
---
Andres Salomon (2):
x86: GEODE: cache results from geode_has_vsa2() and uninline
x86: geode: define geode_has_vsa2() even if CONFIG_MGEODE_LX is not set
Helge Wagner (1):
x86: restrict keyboard io ports reservation to make ipmi driver work
Ingo Molnar (1):
x86: rdc: leds build/config fix
Simon Holm Thøgersen (1):
x86: revert commit 709f744 ("x86: bitops asm constraint fixes")
Suresh Siddha (1):
x86: fix fpu restore from sig return
Thomas Gleixner (3):
x86: revert geode config dependency
x86: cleanup PAT cpu validation
x86: revert printk format warning change which is for linux-next
Vaidyanathan Srinivasan (1):
x86: sysfs cpu?/topology is empty in 2.6.25 (32-bit Intel system)
Yinghai Lu (1):
x86: remove spew print out about bus to node mapping
arch/x86/Kconfig | 2 +-
arch/x86/kernel/cpu/addon_cpuid_features.c | 21 ++++++++++++
arch/x86/kernel/cpu/common.c | 27 +--------------
arch/x86/kernel/geode_32.c | 19 ++++++++++
arch/x86/kernel/i387.c | 12 +++++-
arch/x86/kernel/setup.c | 2 +-
arch/x86/kernel/setup_32.c | 7 +++-
arch/x86/kernel/setup_64.c | 13 +++----
arch/x86/mm/pat.c | 50 ++++++++++++---------------
arch/x86/pci/k8-bus_64.c | 8 ----
include/asm-x86/bitops.h | 37 +++++++++-----------
include/asm-x86/geode.h | 12 +++----
include/asm-x86/i387.h | 10 +++++-
include/asm-x86/pat.h | 8 ++++
include/asm-x86/topology.h | 18 +++++----
15 files changed, 136 insertions(+), 110 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index bbcafaa..fe361ae 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -335,6 +335,7 @@ config X86_RDC321X
select GENERIC_GPIO
select LEDS_CLASS
select LEDS_GPIO
+ select NEW_LEDS
help
This option is needed for RDC R-321x system-on-chip, also known
as R-8610-(G).
@@ -1662,7 +1663,6 @@ config GEODE_MFGPT_TIMER
config OLPC
bool "One Laptop Per Child support"
- depends on MGEODE_LX
default n
help
Add support for detecting the unique features of the OLPC
diff --git a/arch/x86/kernel/cpu/addon_cpuid_features.c b/arch/x86/kernel/cpu/addon_cpuid_features.c
index 238468a..c2e1ce3 100644
--- a/arch/x86/kernel/cpu/addon_cpuid_features.c
+++ b/arch/x86/kernel/cpu/addon_cpuid_features.c
@@ -6,6 +6,7 @@
#include <linux/cpu.h>
+#include <asm/pat.h>
#include <asm/processor.h>
struct cpuid_bit {
@@ -48,3 +49,23 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
set_cpu_cap(c, cb->feature);
}
}
+
+#ifdef CONFIG_X86_PAT
+void __cpuinit validate_pat_support(struct cpuinfo_x86 *c)
+{
+ switch (c->x86_vendor) {
+ case X86_VENDOR_AMD:
+ if (c->x86 >= 0xf && c->x86 <= 0x11)
+ return;
+ break;
+ case X86_VENDOR_INTEL:
+ if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15))
+ return;
+ break;
+ }
+
+ pat_disable(cpu_has_pat ?
+ "PAT disabled. Not yet verified on this CPU type." :
+ "PAT not supported by CPU.");
+}
+#endif
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 35b4f6a..d0463a9 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -12,6 +12,7 @@
#include <asm/mmu_context.h>
#include <asm/mtrr.h>
#include <asm/mce.h>
+#include <asm/pat.h>
#ifdef CONFIG_X86_LOCAL_APIC
#include <asm/mpspec.h>
#include <asm/apic.h>
@@ -308,19 +309,6 @@ static void __cpuinit early_get_cap(struct cpuinfo_x86 *c)
}
- clear_cpu_cap(c, X86_FEATURE_PAT);
-
- switch (c->x86_vendor) {
- case X86_VENDOR_AMD:
- if (c->x86 >= 0xf && c->x86 <= 0x11)
- set_cpu_cap(c, X86_FEATURE_PAT);
- break;
- case X86_VENDOR_INTEL:
- if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15))
- set_cpu_cap(c, X86_FEATURE_PAT);
- break;
- }
-
}
/*
@@ -409,18 +397,6 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 *c)
init_scattered_cpuid_features(c);
}
- clear_cpu_cap(c, X86_FEATURE_PAT);
-
- switch (c->x86_vendor) {
- case X86_VENDOR_AMD:
- if (c->x86 >= 0xf && c->x86 <= 0x11)
- set_cpu_cap(c, X86_FEATURE_PAT);
- break;
- case X86_VENDOR_INTEL:
- if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15))
- set_cpu_cap(c, X86_FEATURE_PAT);
- break;
- }
}
static void __cpuinit squash_the_stupid_serial_number(struct cpuinfo_x86 *c)
@@ -651,6 +627,7 @@ void __init early_cpu_init(void)
cpu_devs[cvdev->vendor] = cvdev->cpu_dev;
early_cpu_detect();
+ validate_pat_support(&boot_cpu_data);
}
/* Make sure %fs is initialized properly in idle threads */
diff --git a/arch/x86/kernel/geode_32.c b/arch/x86/kernel/geode_32.c
index 9dad6ca..e8edd63 100644
--- a/arch/x86/kernel/geode_32.c
+++ b/arch/x86/kernel/geode_32.c
@@ -161,6 +161,25 @@ void geode_gpio_setup_event(unsigned int gpio, int pair, int pme)
}
EXPORT_SYMBOL_GPL(geode_gpio_setup_event);
+int geode_has_vsa2(void)
+{
+ static int has_vsa2 = -1;
+
+ if (has_vsa2 == -1) {
+ /*
+ * The VSA has virtual registers that we can query for a
+ * signature.
+ */
+ outw(VSA_VR_UNLOCK, VSA_VRC_INDEX);
+ outw(VSA_VR_SIGNATURE, VSA_VRC_INDEX);
+
+ has_vsa2 = (inw(VSA_VRC_DATA) == VSA_SIG);
+ }
+
+ return has_vsa2;
+}
+EXPORT_SYMBOL_GPL(geode_has_vsa2);
+
static int __init geode_southbridge_init(void)
{
if (!is_geode())
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
index db6839b..e03cc95 100644
--- a/arch/x86/kernel/i387.c
+++ b/arch/x86/kernel/i387.c
@@ -450,7 +450,6 @@ static inline int restore_i387_fsave(struct _fpstate_ia32 __user *buf)
{
struct task_struct *tsk = current;
- clear_fpu(tsk);
return __copy_from_user(&tsk->thread.xstate->fsave, buf,
sizeof(struct i387_fsave_struct));
}
@@ -461,7 +460,6 @@ static int restore_i387_fxsave(struct _fpstate_ia32 __user *buf)
struct user_i387_ia32_struct env;
int err;
- clear_fpu(tsk);
err = __copy_from_user(&tsk->thread.xstate->fxsave, &buf->_fxsr_env[0],
sizeof(struct i387_fxsave_struct));
/* mxcsr reserved bits must be masked to zero for security reasons */
@@ -478,6 +476,16 @@ int restore_i387_ia32(struct _fpstate_ia32 __user *buf)
int err;
if (HAVE_HWFP) {
+ struct task_struct *tsk = current;
+
+ clear_fpu(tsk);
+
+ if (!used_math()) {
+ err = init_fpu(tsk);
+ if (err)
+ return err;
+ }
+
if (cpu_has_fxsr)
err = restore_i387_fxsave(buf);
else
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index cc6f5eb..c0c68c1 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -95,7 +95,7 @@ void __init setup_per_cpu_areas(void)
/* Copy section for each CPU (we discard the original) */
size = PERCPU_ENOUGH_ROOM;
- printk(KERN_INFO "PERCPU: Allocating %zd bytes of per cpu data\n",
+ printk(KERN_INFO "PERCPU: Allocating %lu bytes of per cpu data\n",
size);
for_each_possible_cpu(i) {
diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 2283422..2c5f8b2 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -127,7 +127,12 @@ static struct resource standard_io_resources[] = { {
}, {
.name = "keyboard",
.start = 0x0060,
- .end = 0x006f,
+ .end = 0x0060,
+ .flags = IORESOURCE_BUSY | IORESOURCE_IO
+}, {
+ .name = "keyboard",
+ .start = 0x0064,
+ .end = 0x0064,
.flags = IORESOURCE_BUSY | IORESOURCE_IO
}, {
.name = "dma page reg",
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 22c14e2..f2fc8fe 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -70,6 +70,7 @@
#include <asm/ds.h>
#include <asm/topology.h>
#include <asm/trampoline.h>
+#include <asm/pat.h>
#include <mach_apic.h>
#ifdef CONFIG_PARAVIRT
@@ -128,7 +129,9 @@ static struct resource standard_io_resources[] = {
.flags = IORESOURCE_BUSY | IORESOURCE_IO },
{ .name = "timer1", .start = 0x50, .end = 0x53,
.flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "keyboard", .start = 0x60, .end = 0x6f,
+ { .name = "keyboard", .start = 0x60, .end = 0x60,
+ .flags = IORESOURCE_BUSY | IORESOURCE_IO },
+ { .name = "keyboard", .start = 0x64, .end = 0x64,
.flags = IORESOURCE_BUSY | IORESOURCE_IO },
{ .name = "dma page reg", .start = 0x80, .end = 0x8f,
.flags = IORESOURCE_BUSY | IORESOURCE_IO },
@@ -1063,25 +1066,19 @@ static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c)
if (c->extended_cpuid_level >= 0x80000007)
c->x86_power = cpuid_edx(0x80000007);
-
- clear_cpu_cap(c, X86_FEATURE_PAT);
-
switch (c->x86_vendor) {
case X86_VENDOR_AMD:
early_init_amd(c);
- if (c->x86 >= 0xf && c->x86 <= 0x11)
- set_cpu_cap(c, X86_FEATURE_PAT);
break;
case X86_VENDOR_INTEL:
early_init_intel(c);
- if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15))
- set_cpu_cap(c, X86_FEATURE_PAT);
break;
case X86_VENDOR_CENTAUR:
early_init_centaur(c);
break;
}
+ validate_pat_support(c);
}
/*
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 277446c..60adbe2 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -25,31 +25,24 @@
#include <asm/mtrr.h>
#include <asm/io.h>
-int pat_wc_enabled = 1;
+#ifdef CONFIG_X86_PAT
+int __read_mostly pat_wc_enabled = 1;
-static u64 __read_mostly boot_pat_state;
-
-static int nopat(char *str)
+void __init pat_disable(char *reason)
{
pat_wc_enabled = 0;
- printk(KERN_INFO "x86: PAT support disabled.\n");
-
- return 0;
+ printk(KERN_INFO "%s\n", reason);
}
-early_param("nopat", nopat);
-static int pat_known_cpu(void)
+static int nopat(char *str)
{
- if (!pat_wc_enabled)
- return 0;
-
- if (cpu_has_pat)
- return 1;
-
- pat_wc_enabled = 0;
- printk(KERN_INFO "CPU and/or kernel does not support PAT.\n");
+ pat_disable("PAT support disabled.");
return 0;
}
+early_param("nopat", nopat);
+#endif
+
+static u64 __read_mostly boot_pat_state;
enum {
PAT_UC = 0, /* uncached */
@@ -66,17 +59,19 @@ void pat_init(void)
{
u64 pat;
-#ifndef CONFIG_X86_PAT
- nopat(NULL);
-#endif
-
- /* Boot CPU enables PAT based on CPU feature */
- if (!smp_processor_id() && !pat_known_cpu())
+ if (!pat_wc_enabled)
return;
- /* APs enable PAT iff boot CPU has enabled it before */
- if (smp_processor_id() && !pat_wc_enabled)
- return;
+ /* Paranoia check. */
+ if (!cpu_has_pat) {
+ printk(KERN_ERR "PAT enabled, but CPU feature cleared\n");
+ /*
+ * Panic if this happens on the secondary CPU, and we
+ * switched to PAT on the boot CPU. We have no way to
+ * undo PAT.
+ */
+ BUG_ON(boot_pat_state);
+ }
/* Set PWT to Write-Combining. All other bits stay the same */
/*
@@ -95,9 +90,8 @@ void pat_init(void)
PAT(4,WB) | PAT(5,WC) | PAT(6,UC_MINUS) | PAT(7,UC);
/* Boot CPU check */
- if (!smp_processor_id()) {
+ if (!boot_pat_state)
rdmsrl(MSR_IA32_CR_PAT, boot_pat_state);
- }
wrmsrl(MSR_IA32_CR_PAT, pat);
printk(KERN_INFO "x86 PAT enabled: cpu %d, old 0x%Lx, new 0x%Lx\n",
diff --git a/arch/x86/pci/k8-bus_64.c b/arch/x86/pci/k8-bus_64.c
index ab6d4b1..5c2799c 100644
--- a/arch/x86/pci/k8-bus_64.c
+++ b/arch/x86/pci/k8-bus_64.c
@@ -504,14 +504,6 @@ static int __init early_fill_mp_bus_info(void)
}
}
-#ifdef CONFIG_NUMA
- for (i = 0; i < BUS_NR; i++) {
- node = mp_bus_to_node[i];
- if (node >= 0)
- printk(KERN_DEBUG "bus: %02x to node: %02x\n", i, node);
- }
-#endif
-
for (i = 0; i < pci_root_num; i++) {
int res_num;
int busnum;
diff --git a/include/asm-x86/bitops.h b/include/asm-x86/bitops.h
index b81a4d4..ee4b3ea 100644
--- a/include/asm-x86/bitops.h
+++ b/include/asm-x86/bitops.h
@@ -23,13 +23,10 @@
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 1)
/* Technically wrong, but this avoids compilation errors on some gcc
versions. */
-#define ADDR "=m" (*(volatile long *)addr)
-#define BIT_ADDR "=m" (((volatile int *)addr)[nr >> 5])
+#define ADDR "=m" (*(volatile long *) addr)
#else
#define ADDR "+m" (*(volatile long *) addr)
-#define BIT_ADDR "+m" (((volatile int *)addr)[nr >> 5])
#endif
-#define BASE_ADDR "m" (*(volatile int *)addr)
/**
* set_bit - Atomically set a bit in memory
@@ -77,7 +74,7 @@ static inline void __set_bit(int nr, volatile void *addr)
*/
static inline void clear_bit(int nr, volatile void *addr)
{
- asm volatile(LOCK_PREFIX "btr %1,%2" : BIT_ADDR : "Ir" (nr), BASE_ADDR);
+ asm volatile(LOCK_PREFIX "btr %1,%0" : ADDR : "Ir" (nr));
}
/*
@@ -96,7 +93,7 @@ static inline void clear_bit_unlock(unsigned nr, volatile void *addr)
static inline void __clear_bit(int nr, volatile void *addr)
{
- asm volatile("btr %1,%2" : BIT_ADDR : "Ir" (nr), BASE_ADDR);
+ asm volatile("btr %1,%0" : ADDR : "Ir" (nr));
}
/*
@@ -131,7 +128,7 @@ static inline void __clear_bit_unlock(unsigned nr, volatile void *addr)
*/
static inline void __change_bit(int nr, volatile void *addr)
{
- asm volatile("btc %1,%2" : BIT_ADDR : "Ir" (nr), BASE_ADDR);
+ asm volatile("btc %1,%0" : ADDR : "Ir" (nr));
}
/**
@@ -145,7 +142,7 @@ static inline void __change_bit(int nr, volatile void *addr)
*/
static inline void change_bit(int nr, volatile void *addr)
{
- asm volatile(LOCK_PREFIX "btc %1,%2" : BIT_ADDR : "Ir" (nr), BASE_ADDR);
+ asm volatile(LOCK_PREFIX "btc %1,%0" : ADDR : "Ir" (nr));
}
/**
@@ -191,9 +188,10 @@ static inline int __test_and_set_bit(int nr, volatile void *addr)
{
int oldbit;
- asm volatile("bts %2,%3\n\t"
- "sbb %0,%0"
- : "=r" (oldbit), BIT_ADDR : "Ir" (nr), BASE_ADDR);
+ asm("bts %2,%1\n\t"
+ "sbb %0,%0"
+ : "=r" (oldbit), ADDR
+ : "Ir" (nr));
return oldbit;
}
@@ -229,9 +227,10 @@ static inline int __test_and_clear_bit(int nr, volatile void *addr)
{
int oldbit;
- asm volatile("btr %2,%3\n\t"
+ asm volatile("btr %2,%1\n\t"
"sbb %0,%0"
- : "=r" (oldbit), BIT_ADDR : "Ir" (nr), BASE_ADDR);
+ : "=r" (oldbit), ADDR
+ : "Ir" (nr));
return oldbit;
}
@@ -240,9 +239,10 @@ static inline int __test_and_change_bit(int nr, volatile void *addr)
{
int oldbit;
- asm volatile("btc %2,%3\n\t"
+ asm volatile("btc %2,%1\n\t"
"sbb %0,%0"
- : "=r" (oldbit), BIT_ADDR : "Ir" (nr), BASE_ADDR);
+ : "=r" (oldbit), ADDR
+ : "Ir" (nr) : "memory");
return oldbit;
}
@@ -276,11 +276,10 @@ static inline int variable_test_bit(int nr, volatile const void *addr)
{
int oldbit;
- asm volatile("bt %2,%3\n\t"
+ asm volatile("bt %2,%1\n\t"
"sbb %0,%0"
: "=r" (oldbit)
- : "m" (((volatile const int *)addr)[nr >> 5]),
- "Ir" (nr), BASE_ADDR);
+ : "m" (*(unsigned long *)addr), "Ir" (nr));
return oldbit;
}
@@ -397,8 +396,6 @@ static inline int fls(int x)
}
#endif /* __KERNEL__ */
-#undef BASE_ADDR
-#undef BIT_ADDR
#undef ADDR
static inline void set_bit_string(unsigned long *bitmap,
diff --git a/include/asm-x86/geode.h b/include/asm-x86/geode.h
index 7154dc4..6e64588 100644
--- a/include/asm-x86/geode.h
+++ b/include/asm-x86/geode.h
@@ -185,16 +185,14 @@ static inline int is_geode(void)
return (is_geode_gx() || is_geode_lx());
}
-/*
- * The VSA has virtual registers that we can query for a signature.
- */
+#ifdef CONFIG_MGEODE_LX
+extern int geode_has_vsa2(void);
+#else
static inline int geode_has_vsa2(void)
{
- outw(VSA_VR_UNLOCK, VSA_VRC_INDEX);
- outw(VSA_VR_SIGNATURE, VSA_VRC_INDEX);
-
- return (inw(VSA_VRC_DATA) == VSA_SIG);
+ return 0;
}
+#endif
/* MFGPTs */
diff --git a/include/asm-x86/i387.h b/include/asm-x86/i387.h
index da2adb4..6b722d3 100644
--- a/include/asm-x86/i387.h
+++ b/include/asm-x86/i387.h
@@ -175,7 +175,15 @@ static inline int save_i387(struct _fpstate __user *buf)
*/
static inline int restore_i387(struct _fpstate __user *buf)
{
- set_used_math();
+ struct task_struct *tsk = current;
+ int err;
+
+ if (!used_math()) {
+ err = init_fpu(tsk);
+ if (err)
+ return err;
+ }
+
if (!(task_thread_info(current)->status & TS_USEDFPU)) {
clts();
task_thread_info(current)->status |= TS_USEDFPU;
diff --git a/include/asm-x86/pat.h b/include/asm-x86/pat.h
index 8b822b5..88f60cc 100644
--- a/include/asm-x86/pat.h
+++ b/include/asm-x86/pat.h
@@ -4,7 +4,13 @@
#include <linux/types.h>
+#ifdef CONFIG_X86_PAT
extern int pat_wc_enabled;
+extern void validate_pat_support(struct cpuinfo_x86 *c);
+#else
+static const int pat_wc_enabled = 0;
+static inline void validate_pat_support(struct cpuinfo_x86 *c) { }
+#endif
extern void pat_init(void);
@@ -12,5 +18,7 @@ extern int reserve_memtype(u64 start, u64 end,
unsigned long req_type, unsigned long *ret_type);
extern int free_memtype(u64 start, u64 end);
+extern void pat_disable(char *reason);
+
#endif
diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h
index 4f35a0f..dcf3f81 100644
--- a/include/asm-x86/topology.h
+++ b/include/asm-x86/topology.h
@@ -25,6 +25,16 @@
#ifndef _ASM_X86_TOPOLOGY_H
#define _ASM_X86_TOPOLOGY_H
+#ifdef CONFIG_X86_32
+# ifdef CONFIG_X86_HT
+# define ENABLE_TOPO_DEFINES
+# endif
+#else
+# ifdef CONFIG_SMP
+# define ENABLE_TOPO_DEFINES
+# endif
+#endif
+
#ifdef CONFIG_NUMA
#include <linux/cpumask.h>
#include <asm/mpspec.h>
@@ -130,10 +140,6 @@ extern unsigned long node_end_pfn[];
extern unsigned long node_remap_size[];
#define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid])
-# ifdef CONFIG_X86_HT
-# define ENABLE_TOPO_DEFINES
-# endif
-
# define SD_CACHE_NICE_TRIES 1
# define SD_IDLE_IDX 1
# define SD_NEWIDLE_IDX 2
@@ -141,10 +147,6 @@ extern unsigned long node_remap_size[];
#else
-# ifdef CONFIG_SMP
-# define ENABLE_TOPO_DEFINES
-# endif
-
# define SD_CACHE_NICE_TRIES 2
# define SD_IDLE_IDX 2
# define SD_NEWIDLE_IDX 2
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