diff options
| -rw-r--r-- | arch/x86/Kconfig | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/addon_cpuid_features.c | 21 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 27 | ||||
| -rw-r--r-- | arch/x86/kernel/geode_32.c | 19 | ||||
| -rw-r--r-- | arch/x86/kernel/i387.c | 12 | ||||
| -rw-r--r-- | arch/x86/kernel/setup.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_32.c | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 13 | ||||
| -rw-r--r-- | arch/x86/mm/pat.c | 50 | ||||
| -rw-r--r-- | arch/x86/pci/k8-bus_64.c | 8 | ||||
| -rw-r--r-- | include/asm-x86/bitops.h | 37 | ||||
| -rw-r--r-- | include/asm-x86/geode.h | 12 | ||||
| -rw-r--r-- | include/asm-x86/i387.h | 10 | ||||
| -rw-r--r-- | include/asm-x86/pat.h | 8 | ||||
| -rw-r--r-- | 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 |