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-rw-r--r--Documentation/kernel-parameters.txt4
-rw-r--r--arch/x86/boot/memory.c29
-rw-r--r--arch/x86/kernel/cpu/common.c7
-rw-r--r--arch/x86/kernel/reboot.c8
-rw-r--r--arch/x86/kernel/setup_percpu.c4
-rw-r--r--arch/x86/kvm/mmu.c3
-rw-r--r--arch/x86/kvm/x86.c6
-rw-r--r--arch/x86/mm/pageattr.c12
-rw-r--r--drivers/base/power/main.c4
-rw-r--r--drivers/md/bitmap.c13
-rw-r--r--drivers/md/md.c31
-rw-r--r--drivers/md/raid5.c6
-rw-r--r--init/main.c3
-rw-r--r--kernel/async.c20
-rw-r--r--kernel/kexec.c2
-rw-r--r--kernel/power/disk.c21
-rw-r--r--kernel/power/main.c7
17 files changed, 102 insertions, 78 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index e87bdbfbcc7..fd5cac01303 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1535,6 +1535,10 @@ and is between 256 and 4096 characters. It is defined in the file
register save and restore. The kernel will only save
legacy floating-point registers on task switch.
+ noxsave [BUGS=X86] Disables x86 extended register state save
+ and restore using xsave. The kernel will fallback to
+ enabling legacy floating-point and sse state.
+
nohlt [BUGS=ARM,SH] Tells the kernel that the sleep(SH) or
wfi(ARM) instruction doesn't work correctly and not to
use it. This is also useful when using JTAG debugger.
diff --git a/arch/x86/boot/memory.c b/arch/x86/boot/memory.c
index 5054c2ddd1a..74b3d2ba84e 100644
--- a/arch/x86/boot/memory.c
+++ b/arch/x86/boot/memory.c
@@ -17,11 +17,6 @@
#define SMAP 0x534d4150 /* ASCII "SMAP" */
-struct e820_ext_entry {
- struct e820entry std;
- u32 ext_flags;
-} __attribute__((packed));
-
static int detect_memory_e820(void)
{
int count = 0;
@@ -29,13 +24,21 @@ static int detect_memory_e820(void)
u32 size, id, edi;
u8 err;
struct e820entry *desc = boot_params.e820_map;
- static struct e820_ext_entry buf; /* static so it is zeroed */
+ static struct e820entry buf; /* static so it is zeroed */
/*
- * Set this here so that if the BIOS doesn't change this field
- * but still doesn't change %ecx, we're still okay...
+ * Note: at least one BIOS is known which assumes that the
+ * buffer pointed to by one e820 call is the same one as
+ * the previous call, and only changes modified fields. Therefore,
+ * we use a temporary buffer and copy the results entry by entry.
+ *
+ * This routine deliberately does not try to account for
+ * ACPI 3+ extended attributes. This is because there are
+ * BIOSes in the field which report zero for the valid bit for
+ * all ranges, and we don't currently make any use of the
+ * other attribute bits. Revisit this if we see the extended
+ * attribute bits deployed in a meaningful way in the future.
*/
- buf.ext_flags = 1;
do {
size = sizeof buf;
@@ -66,13 +69,7 @@ static int detect_memory_e820(void)
break;
}
- /* ACPI 3.0 added the extended flags support. If bit 0
- in the extended flags is zero, we're supposed to simply
- ignore the entry -- a backwards incompatible change! */
- if (size > 20 && !(buf.ext_flags & 1))
- continue;
-
- *desc++ = buf.std;
+ *desc++ = buf;
count++;
} while (next && count < ARRAY_SIZE(boot_params.e820_map));
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index c1caefc82e6..77848d9fca6 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -114,6 +114,13 @@ DEFINE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page) = { .gdt = {
} };
EXPORT_PER_CPU_SYMBOL_GPL(gdt_page);
+static int __init x86_xsave_setup(char *s)
+{
+ setup_clear_cpu_cap(X86_FEATURE_XSAVE);
+ return 1;
+}
+__setup("noxsave", x86_xsave_setup);
+
#ifdef CONFIG_X86_32
static int cachesize_override __cpuinitdata = -1;
static int disable_x86_serial_nr __cpuinitdata = 1;
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 1340dad417f..667188e0b5a 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -232,6 +232,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Dell DXP061"),
},
},
+ { /* Handle problems with rebooting on Sony VGN-Z540N */
+ .callback = set_bios_reboot,
+ .ident = "Sony VGN-Z540N",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-Z540N"),
+ },
+ },
{ }
};
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 3a97a4cf187..8f0e13be36b 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -160,8 +160,10 @@ static ssize_t __init setup_pcpu_remap(size_t static_size)
/*
* If large page isn't supported, there's no benefit in doing
* this. Also, on non-NUMA, embedding is better.
+ *
+ * NOTE: disabled for now.
*/
- if (!cpu_has_pse || !pcpu_need_numa())
+ if (true || !cpu_has_pse || !pcpu_need_numa())
return -EINVAL;
/*
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index b6caf1329b1..32cf11e5728 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2897,8 +2897,7 @@ static int kvm_pv_mmu_write(struct kvm_vcpu *vcpu,
static int kvm_pv_mmu_flush_tlb(struct kvm_vcpu *vcpu)
{
- kvm_x86_ops->tlb_flush(vcpu);
- set_bit(KVM_REQ_MMU_SYNC, &vcpu->requests);
+ kvm_set_cr3(vcpu, vcpu->arch.cr3);
return 1;
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 49079a46687..3944e917e79 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -338,6 +338,9 @@ EXPORT_SYMBOL_GPL(kvm_lmsw);
void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
{
+ unsigned long old_cr4 = vcpu->arch.cr4;
+ unsigned long pdptr_bits = X86_CR4_PGE | X86_CR4_PSE | X86_CR4_PAE;
+
if (cr4 & CR4_RESERVED_BITS) {
printk(KERN_DEBUG "set_cr4: #GP, reserved bits\n");
kvm_inject_gp(vcpu, 0);
@@ -351,7 +354,8 @@ void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
kvm_inject_gp(vcpu, 0);
return;
}
- } else if (is_paging(vcpu) && !is_pae(vcpu) && (cr4 & X86_CR4_PAE)
+ } else if (is_paging(vcpu) && (cr4 & X86_CR4_PAE)
+ && ((cr4 ^ old_cr4) & pdptr_bits)
&& !load_pdptrs(vcpu, vcpu->arch.cr3)) {
printk(KERN_DEBUG "set_cr4: #GP, pdptrs reserved bits\n");
kvm_inject_gp(vcpu, 0);
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 797f9f107cb..0f9052bcec4 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -153,7 +153,7 @@ static void __cpa_flush_all(void *arg)
*/
__flush_tlb_all();
- if (cache && boot_cpu_data.x86_model >= 4)
+ if (cache && boot_cpu_data.x86 >= 4)
wbinvd();
}
@@ -204,6 +204,11 @@ static void cpa_flush_range(unsigned long start, int numpages, int cache)
}
}
+static void wbinvd_local(void *unused)
+{
+ wbinvd();
+}
+
static void cpa_flush_array(unsigned long *start, int numpages, int cache,
int in_flags, struct page **pages)
{
@@ -218,8 +223,9 @@ static void cpa_flush_array(unsigned long *start, int numpages, int cache,
/* 4M threshold */
if (numpages >= 1024) {
- if (boot_cpu_data.x86_model >= 4)
- wbinvd();
+ if (boot_cpu_data.x86 >= 4)
+ on_each_cpu(wbinvd_local, NULL, 1);
+
return;
}
/*
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 69b4ddb7de3..3e4bc699bc0 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -357,6 +357,7 @@ static void dpm_power_up(pm_message_t state)
{
struct device *dev;
+ mutex_lock(&dpm_list_mtx);
list_for_each_entry(dev, &dpm_list, power.entry)
if (dev->power.status > DPM_OFF) {
int error;
@@ -366,6 +367,7 @@ static void dpm_power_up(pm_message_t state)
if (error)
pm_dev_err(dev, state, " early", error);
}
+ mutex_unlock(&dpm_list_mtx);
}
/**
@@ -614,6 +616,7 @@ int device_power_down(pm_message_t state)
int error = 0;
suspend_device_irqs();
+ mutex_lock(&dpm_list_mtx);
list_for_each_entry_reverse(dev, &dpm_list, power.entry) {
error = suspend_device_noirq(dev, state);
if (error) {
@@ -622,6 +625,7 @@ int device_power_down(pm_message_t state)
}
dev->power.status = DPM_OFF_IRQ;
}
+ mutex_unlock(&dpm_list_mtx);
if (error)
device_power_up(resume_event(state));
return error;
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 47c68bc75a1..56df1cee8fb 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1097,14 +1097,12 @@ void bitmap_daemon_work(struct bitmap *bitmap)
}
bitmap->allclean = 1;
+ spin_lock_irqsave(&bitmap->lock, flags);
for (j = 0; j < bitmap->chunks; j++) {
bitmap_counter_t *bmc;
- spin_lock_irqsave(&bitmap->lock, flags);
- if (!bitmap->filemap) {
+ if (!bitmap->filemap)
/* error or shutdown */
- spin_unlock_irqrestore(&bitmap->lock, flags);
break;
- }
page = filemap_get_page(bitmap, j);
@@ -1121,6 +1119,8 @@ void bitmap_daemon_work(struct bitmap *bitmap)
write_page(bitmap, page, 0);
bitmap->allclean = 0;
}
+ spin_lock_irqsave(&bitmap->lock, flags);
+ j |= (PAGE_BITS - 1);
continue;
}
@@ -1181,9 +1181,10 @@ void bitmap_daemon_work(struct bitmap *bitmap)
ext2_clear_bit(file_page_offset(j), paddr);
kunmap_atomic(paddr, KM_USER0);
}
- }
- spin_unlock_irqrestore(&bitmap->lock, flags);
+ } else
+ j |= PAGE_COUNTER_MASK;
}
+ spin_unlock_irqrestore(&bitmap->lock, flags);
/* now sync the final page */
if (lastpage != NULL) {
diff --git a/drivers/md/md.c b/drivers/md/md.c
index fccc8343a25..641b211fe3f 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1375,6 +1375,9 @@ static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev)
sb->raid_disks = cpu_to_le32(mddev->raid_disks);
sb->size = cpu_to_le64(mddev->dev_sectors);
+ sb->chunksize = cpu_to_le32(mddev->chunk_size >> 9);
+ sb->level = cpu_to_le32(mddev->level);
+ sb->layout = cpu_to_le32(mddev->layout);
if (mddev->bitmap && mddev->bitmap_file == NULL) {
sb->bitmap_offset = cpu_to_le32((__u32)mddev->bitmap_offset);
@@ -3303,7 +3306,9 @@ static ssize_t
action_show(mddev_t *mddev, char *page)
{
char *type = "idle";
- if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
+ if (test_bit(MD_RECOVERY_FROZEN, &mddev->recovery))
+ type = "frozen";
+ else if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
(!mddev->ro && test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))) {
if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery))
type = "reshape";
@@ -3326,7 +3331,12 @@ action_store(mddev_t *mddev, const char *page, size_t len)
if (!mddev->pers || !mddev->pers->sync_request)
return -EINVAL;
- if (cmd_match(page, "idle")) {
+ if (cmd_match(page, "frozen"))
+ set_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
+ else
+ clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
+
+ if (cmd_match(page, "idle") || cmd_match(page, "frozen")) {
if (mddev->sync_thread) {
set_bit(MD_RECOVERY_INTR, &mddev->recovery);
md_unregister_thread(mddev->sync_thread);
@@ -3680,7 +3690,7 @@ array_size_store(mddev_t *mddev, const char *buf, size_t len)
if (strict_blocks_to_sectors(buf, &sectors) < 0)
return -EINVAL;
if (mddev->pers && mddev->pers->size(mddev, 0, 0) < sectors)
- return -EINVAL;
+ return -E2BIG;
mddev->external_size = 1;
}
@@ -5557,7 +5567,7 @@ static struct block_device_operations md_fops =
.owner = THIS_MODULE,
.open = md_open,
.release = md_release,
- .locked_ioctl = md_ioctl,
+ .ioctl = md_ioctl,
.getgeo = md_getgeo,
.media_changed = md_media_changed,
.revalidate_disk= md_revalidate,
@@ -6352,12 +6362,13 @@ void md_do_sync(mddev_t *mddev)
skipped = 0;
- if ((mddev->curr_resync > mddev->curr_resync_completed &&
- (mddev->curr_resync - mddev->curr_resync_completed)
- > (max_sectors >> 4)) ||
- (j - mddev->curr_resync_completed)*2
- >= mddev->resync_max - mddev->curr_resync_completed
- ) {
+ if (!test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) &&
+ ((mddev->curr_resync > mddev->curr_resync_completed &&
+ (mddev->curr_resync - mddev->curr_resync_completed)
+ > (max_sectors >> 4)) ||
+ (j - mddev->curr_resync_completed)*2
+ >= mddev->resync_max - mddev->curr_resync_completed
+ )) {
/* time to update curr_resync_completed */
blk_unplug(mddev->queue);
wait_event(mddev->recovery_wait,
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 4616bc3a6e7..3c3626d2a1f 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3811,13 +3811,13 @@ static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped
safepos = conf->reshape_safe;
sector_div(safepos, data_disks);
if (mddev->delta_disks < 0) {
- writepos -= reshape_sectors;
+ writepos -= min(reshape_sectors, writepos);
readpos += reshape_sectors;
safepos += reshape_sectors;
} else {
writepos += reshape_sectors;
- readpos -= reshape_sectors;
- safepos -= reshape_sectors;
+ readpos -= min(reshape_sectors, readpos);
+ safepos -= min(reshape_sectors, safepos);
}
/* 'writepos' is the most advanced device address we might write.
diff --git a/init/main.c b/init/main.c
index 3bbf93be744..d721dad05dd 100644
--- a/init/main.c
+++ b/init/main.c
@@ -566,8 +566,7 @@ asmlinkage void __init start_kernel(void)
tick_init();
boot_cpu_init();
page_address_init();
- printk(KERN_NOTICE);
- printk(linux_banner);
+ printk(KERN_NOTICE "%s", linux_banner);
setup_arch(&command_line);
mm_init_owner(&init_mm, &init_task);
setup_command_line(command_line);
diff --git a/kernel/async.c b/kernel/async.c
index 968ef9457d4..50540301ed0 100644
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -92,19 +92,23 @@ extern int initcall_debug;
static async_cookie_t __lowest_in_progress(struct list_head *running)
{
struct async_entry *entry;
+ async_cookie_t ret = next_cookie; /* begin with "infinity" value */
+
if (!list_empty(running)) {
entry = list_first_entry(running,
struct async_entry, list);
- return entry->cookie;
- } else if (!list_empty(&async_pending)) {
- entry = list_first_entry(&async_pending,
- struct async_entry, list);
- return entry->cookie;
- } else {
- /* nothing in progress... next_cookie is "infinity" */
- return next_cookie;
+ ret = entry->cookie;
}
+ if (!list_empty(&async_pending)) {
+ list_for_each_entry(entry, &async_pending, list)
+ if (entry->running == running) {
+ ret = entry->cookie;
+ break;
+ }
+ }
+
+ return ret;
}
static async_cookie_t lowest_in_progress(struct list_head *running)
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 5a758c6e495..e4983770913 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1451,7 +1451,6 @@ int kernel_kexec(void)
error = device_suspend(PMSG_FREEZE);
if (error)
goto Resume_console;
- device_pm_lock();
/* At this point, device_suspend() has been called,
* but *not* device_power_down(). We *must*
* device_power_down() now. Otherwise, drivers for
@@ -1489,7 +1488,6 @@ int kernel_kexec(void)
enable_nonboot_cpus();
device_power_up(PMSG_RESTORE);
Resume_devices:
- device_pm_unlock();
device_resume(PMSG_RESTORE);
Resume_console:
resume_console();
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index b0dc9e7a0d1..5cb080e7eeb 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -215,8 +215,6 @@ static int create_image(int platform_mode)
if (error)
return error;
- device_pm_lock();
-
/* At this point, device_suspend() has been called, but *not*
* device_power_down(). We *must* call device_power_down() now.
* Otherwise, drivers for some devices (e.g. interrupt controllers)
@@ -227,7 +225,7 @@ static int create_image(int platform_mode)
if (error) {
printk(KERN_ERR "PM: Some devices failed to power down, "
"aborting hibernation\n");
- goto Unlock;
+ return error;
}
error = platform_pre_snapshot(platform_mode);
@@ -280,9 +278,6 @@ static int create_image(int platform_mode)
device_power_up(in_suspend ?
(error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
- Unlock:
- device_pm_unlock();
-
return error;
}
@@ -344,13 +339,11 @@ static int resume_target_kernel(bool platform_mode)
{
int error;
- device_pm_lock();
-
error = device_power_down(PMSG_QUIESCE);
if (error) {
printk(KERN_ERR "PM: Some devices failed to power down, "
"aborting resume\n");
- goto Unlock;
+ return error;
}
error = platform_pre_restore(platform_mode);
@@ -403,9 +396,6 @@ static int resume_target_kernel(bool platform_mode)
device_power_up(PMSG_RECOVER);
- Unlock:
- device_pm_unlock();
-
return error;
}
@@ -464,11 +454,9 @@ int hibernation_platform_enter(void)
goto Resume_devices;
}
- device_pm_lock();
-
error = device_power_down(PMSG_HIBERNATE);
if (error)
- goto Unlock;
+ goto Resume_devices;
error = hibernation_ops->prepare();
if (error)
@@ -493,9 +481,6 @@ int hibernation_platform_enter(void)
device_power_up(PMSG_RESTORE);
- Unlock:
- device_pm_unlock();
-
Resume_devices:
entering_platform_hibernation = false;
device_resume(PMSG_RESTORE);
diff --git a/kernel/power/main.c b/kernel/power/main.c
index f99ed6a75ea..868028280d1 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -289,12 +289,10 @@ static int suspend_enter(suspend_state_t state)
{
int error;
- device_pm_lock();
-
if (suspend_ops->prepare) {
error = suspend_ops->prepare();
if (error)
- goto Done;
+ return error;
}
error = device_power_down(PMSG_SUSPEND);
@@ -343,9 +341,6 @@ static int suspend_enter(suspend_state_t state)
if (suspend_ops->finish)
suspend_ops->finish();
- Done:
- device_pm_unlock();
-
return error;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-13 03:03:53 +0000