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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Clear TS in irq_ts_save() when in an atomic section
  x86: Detect use of extended APIC ID for AMD CPUs
  x86: memtest: remove 64-bit division
  x86, UV: Fix macros for multiple coherency domains
  x86: Fix non-lazy GS handling in sys_vm86()
  x86: Add quirk for reboot stalls on a Dell Optiplex 360
  x86: Fix UV BAU activation descriptor init
This commit is contained in:
Linus Torvalds 2009-06-10 16:15:14 -07:00
parent bec706838e 0b8c3d5ab0
commit 9b29e8228a
11 changed files with 66 additions and 29 deletions
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2
arch/x86/include/asm/apic.h
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@ -402,7 +402,7 @@ static inline unsigned default_get_apic_id(unsigned long x)
{
unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR));
if (APIC_XAPIC(ver))
if (APIC_XAPIC(ver) || boot_cpu_has(X86_FEATURE_EXTD_APICID))
return (x >> 24) & 0xFF;
else
return (x >> 24) & 0x0F;

1
arch/x86/include/asm/cpufeature.h
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@ -94,6 +94,7 @@
#define X86_FEATURE_TSC_RELIABLE (3*32+23) /* TSC is known to be reliable */
#define X86_FEATURE_NONSTOP_TSC (3*32+24) /* TSC does not stop in C states */
#define X86_FEATURE_CLFLUSH_MONITOR (3*32+25) /* "" clflush reqd with monitor */
#define X86_FEATURE_EXTD_APICID (3*32+26) /* has extended APICID (8 bits) */
/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
#define X86_FEATURE_XMM3 (4*32+ 0) /* "pni" SSE-3 */

12
arch/x86/include/asm/i387.h
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@ -304,18 +304,18 @@ static inline void kernel_fpu_end(void)
/*
* Some instructions like VIA's padlock instructions generate a spurious
* DNA fault but don't modify SSE registers. And these instructions
* get used from interrupt context aswell. To prevent these kernel instructions
* in interrupt context interact wrongly with other user/kernel fpu usage, we
* get used from interrupt context as well. To prevent these kernel instructions
* in interrupt context interacting wrongly with other user/kernel fpu usage, we
* should use them only in the context of irq_ts_save/restore()
*/
static inline int irq_ts_save(void)
{
/*
* If we are in process context, we are ok to take a spurious DNA fault.
* Otherwise, doing clts() in process context require pre-emption to
* be disabled or some heavy lifting like kernel_fpu_begin()
* If in process context and not atomic, we can take a spurious DNA fault.
* Otherwise, doing clts() in process context requires disabling preemption
* or some heavy lifting like kernel_fpu_begin()
*/
if (!in_interrupt())
if (!in_atomic())
return 0;
if (read_cr0() & X86_CR0_TS) {

2
arch/x86/include/asm/uv/uv_bau.h
View File

@ -37,7 +37,7 @@
#define UV_CPUS_PER_ACT_STATUS 32
#define UV_ACT_STATUS_MASK 0x3
#define UV_ACT_STATUS_SIZE 2
#define UV_ACTIVATION_DESCRIPTOR_SIZE 32
#define UV_ADP_SIZE 32
#define UV_DISTRIBUTION_SIZE 256
#define UV_SW_ACK_NPENDING 8
#define UV_NET_ENDPOINT_INTD 0x38

6
arch/x86/include/asm/uv/uv_hub.h
View File

@ -133,6 +133,7 @@ struct uv_scir_s {
struct uv_hub_info_s {
unsigned long global_mmr_base;
unsigned long gpa_mask;
unsigned int gnode_extra;
unsigned long gnode_upper;
unsigned long lowmem_remap_top;
unsigned long lowmem_remap_base;
@ -159,7 +160,8 @@ DECLARE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
* p - PNODE (local part of nsids, right shifted 1)
*/
#define UV_NASID_TO_PNODE(n) (((n) >> 1) & uv_hub_info->pnode_mask)
#define UV_PNODE_TO_NASID(p) (((p) << 1) | uv_hub_info->gnode_upper)
#define UV_PNODE_TO_GNODE(p) ((p) |uv_hub_info->gnode_extra)
#define UV_PNODE_TO_NASID(p) (UV_PNODE_TO_GNODE(p) << 1)
#define UV_LOCAL_MMR_BASE 0xf4000000UL
#define UV_GLOBAL_MMR32_BASE 0xf8000000UL
@ -173,7 +175,7 @@ DECLARE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
#define UV_GLOBAL_MMR32_PNODE_BITS(p) ((p) << (UV_GLOBAL_MMR32_PNODE_SHIFT))
#define UV_GLOBAL_MMR64_PNODE_BITS(p) \
((unsigned long)(p) << UV_GLOBAL_MMR64_PNODE_SHIFT)
((unsigned long)(UV_PNODE_TO_GNODE(p)) << UV_GLOBAL_MMR64_PNODE_SHIFT)
#define UV_APIC_PNODE_SHIFT 6

15
arch/x86/kernel/apic/x2apic_uv_x.c
View File

@ -562,7 +562,7 @@ void __init uv_system_init(void)
union uvh_node_id_u node_id;
unsigned long gnode_upper, lowmem_redir_base, lowmem_redir_size;
int bytes, nid, cpu, lcpu, pnode, blade, i, j, m_val, n_val;
int max_pnode = 0;
int gnode_extra, max_pnode = 0;
unsigned long mmr_base, present, paddr;
unsigned short pnode_mask;
@ -574,6 +574,13 @@ void __init uv_system_init(void)
mmr_base =
uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
~UV_MMR_ENABLE;
pnode_mask = (1 << n_val) - 1;
node_id.v = uv_read_local_mmr(UVH_NODE_ID);
gnode_extra = (node_id.s.node_id & ~((1 << n_val) - 1)) >> 1;
gnode_upper = ((unsigned long)gnode_extra << m_val);
printk(KERN_DEBUG "UV: N %d, M %d, gnode_upper 0x%lx, gnode_extra 0x%x\n",
n_val, m_val, gnode_upper, gnode_extra);
printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
for(i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++)
@ -610,11 +617,6 @@ void __init uv_system_init(void)
}
}
pnode_mask = (1 << n_val) - 1;
node_id.v = uv_read_local_mmr(UVH_NODE_ID);
gnode_upper = (((unsigned long)node_id.s.node_id) &
~((1 << n_val) - 1)) << m_val;
uv_bios_init();
uv_bios_get_sn_info(0, &uv_type, &sn_partition_id,
&sn_coherency_id, &sn_region_size);
@ -637,6 +639,7 @@ void __init uv_system_init(void)
uv_cpu_hub_info(cpu)->pnode_mask = pnode_mask;
uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
uv_cpu_hub_info(cpu)->gnode_extra = gnode_extra;
uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
uv_cpu_hub_info(cpu)->coherency_domain_number = sn_coherency_id;
uv_cpu_hub_info(cpu)->scir.offset = SCIR_LOCAL_MMR_BASE + lcpu;

10
arch/x86/kernel/cpu/amd.c
View File

@ -6,6 +6,7 @@
#include <asm/processor.h>
#include <asm/apic.h>
#include <asm/cpu.h>
#include <asm/pci-direct.h>
#ifdef CONFIG_X86_64
# include <asm/numa_64.h>
@ -351,6 +352,15 @@ static void __cpuinit early_init_amd(struct cpuinfo_x86 *c)
(c->x86_model == 8 && c->x86_mask >= 8))
set_cpu_cap(c, X86_FEATURE_K6_MTRR);
#endif
#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_PCI)
/* check CPU config space for extended APIC ID */
if (c->x86 >= 0xf) {
unsigned int val;
val = read_pci_config(0, 24, 0, 0x68);
if ((val & ((1 << 17) | (1 << 18))) == ((1 << 17) | (1 << 18)))
set_cpu_cap(c, X86_FEATURE_EXTD_APICID);
}
#endif
}
static void __cpuinit init_amd(struct cpuinfo_x86 *c)

9
arch/x86/kernel/reboot.c
View File

@ -192,6 +192,15 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
DMI_MATCH(DMI_BOARD_NAME, "0KP561"),
},
},
{ /* Handle problems with rebooting on Dell Optiplex 360 with 0T656F */
.callback = set_bios_reboot,
.ident = "Dell OptiPlex 360",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 360"),
DMI_MATCH(DMI_BOARD_NAME, "0T656F"),
},
},
{ /* Handle problems with rebooting on Dell 2400's */
.callback = set_bios_reboot,
.ident = "Dell PowerEdge 2400",

15
arch/x86/kernel/tlb_uv.c
View File

@ -715,7 +715,12 @@ uv_activation_descriptor_init(int node, int pnode)
struct bau_desc *adp;
struct bau_desc *ad2;
adp = (struct bau_desc *)kmalloc_node(16384, GFP_KERNEL, node);
/*
* each bau_desc is 64 bytes; there are 8 (UV_ITEMS_PER_DESCRIPTOR)
* per cpu; and up to 32 (UV_ADP_SIZE) cpu's per blade
*/
adp = (struct bau_desc *)kmalloc_node(sizeof(struct bau_desc)*
UV_ADP_SIZE*UV_ITEMS_PER_DESCRIPTOR, GFP_KERNEL, node);
BUG_ON(!adp);
pa = uv_gpa(adp); /* need the real nasid*/
@ -729,7 +734,13 @@ uv_activation_descriptor_init(int node, int pnode)
(n << UV_DESC_BASE_PNODE_SHIFT | m));
}
for (i = 0, ad2 = adp; i < UV_ACTIVATION_DESCRIPTOR_SIZE; i++, ad2++) {
/*
* initializing all 8 (UV_ITEMS_PER_DESCRIPTOR) descriptors for each
* cpu even though we only use the first one; one descriptor can
* describe a broadcast to 256 nodes.
*/
for (i = 0, ad2 = adp; i < (UV_ADP_SIZE*UV_ITEMS_PER_DESCRIPTOR);
i++, ad2++) {
memset(ad2, 0, sizeof(struct bau_desc));
ad2->header.sw_ack_flag = 1;
/*

9
arch/x86/kernel/vm86_32.c
View File

@ -287,10 +287,9 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk
info->regs.pt.ds = 0;
info->regs.pt.es = 0;
info->regs.pt.fs = 0;
/* we are clearing gs later just before "jmp resume_userspace",
* because it is not saved/restored.
*/
#ifndef CONFIG_X86_32_LAZY_GS
info->regs.pt.gs = 0;
#endif
/*
* The flags register is also special: we cannot trust that the user
@ -343,7 +342,9 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk
__asm__ __volatile__(
"movl %0,%%esp\n\t"
"movl %1,%%ebp\n\t"
#ifdef CONFIG_X86_32_LAZY_GS
"mov %2, %%gs\n\t"
#endif
"jmp resume_userspace"
: /* no outputs */
:"r" (&info->regs), "r" (task_thread_info(tsk)), "r" (0));

14
arch/x86/mm/memtest.c
View File

@ -40,23 +40,23 @@ static void __init reserve_bad_mem(u64 pattern, u64 start_bad, u64 end_bad)
static void __init memtest(u64 pattern, u64 start_phys, u64 size)
{
u64 i, count;
u64 *start;
u64 *p;
void *start, *end;
u64 start_bad, last_bad;
u64 start_phys_aligned;
size_t incr;
incr = sizeof(pattern);
start_phys_aligned = ALIGN(start_phys, incr);
count = (size - (start_phys_aligned - start_phys))/incr;
start = __va(start_phys_aligned);
end = start + size - (start_phys_aligned - start_phys);
start_bad = 0;
last_bad = 0;
for (i = 0; i < count; i++)
start[i] = pattern;
for (i = 0; i < count; i++, start++, start_phys_aligned += incr) {
if (*start == pattern)
for (p = start; p < end; p++)
*p = pattern;
for (p = start; p < end; p++, start_phys_aligned += incr) {
if (*p == pattern)
continue;
if (start_phys_aligned == last_bad + incr) {
last_bad += incr;