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authorLinus Torvalds <torvalds@linux-foundation.org>2010-01-08 13:55:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-01-08 13:55:52 -0800
commit80e23b7cea77fa29a4c902aa53e87c53c5e054c5 (patch)
treeb428bdfc70cb3f0d909d5a2cb46a728ff67c205d /arch/x86
parent00cd25b29ba946b7d0907157577ab5cf421bd50e (diff)
parent7f41c2e1523f628cc248e34192162aec5728bed7 (diff)
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip: x86, irq: Check move_in_progress before freeing the vector mapping x86: copy_from_user() should not return -EFAULT Revert "x86: Side-step lguest problem by only building cmpxchg8b_emu for pre-Pentium" x86/pci: Intel ioh bus num reg accessing fix x86: Fix size for ex trampoline with 32bit
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/uaccess_32.h5
-rw-r--r--arch/x86/include/asm/uaccess_64.h5
-rw-r--r--arch/x86/kernel/apic/io_apic.c7
-rw-r--r--arch/x86/kernel/e820.c4
-rw-r--r--arch/x86/pci/intel_bus.c4
5 files changed, 17 insertions, 8 deletions
diff --git a/arch/x86/include/asm/uaccess_32.h b/arch/x86/include/asm/uaccess_32.h
index 0c9825e97f3..088d09fb161 100644
--- a/arch/x86/include/asm/uaccess_32.h
+++ b/arch/x86/include/asm/uaccess_32.h
@@ -205,14 +205,13 @@ static inline unsigned long __must_check copy_from_user(void *to,
unsigned long n)
{
int sz = __compiletime_object_size(to);
- int ret = -EFAULT;
if (likely(sz == -1 || sz >= n))
- ret = _copy_from_user(to, from, n);
+ n = _copy_from_user(to, from, n);
else
copy_from_user_overflow();
- return ret;
+ return n;
}
long __must_check strncpy_from_user(char *dst, const char __user *src,
diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h
index 46324c6a4f6..535e421498f 100644
--- a/arch/x86/include/asm/uaccess_64.h
+++ b/arch/x86/include/asm/uaccess_64.h
@@ -30,16 +30,15 @@ static inline unsigned long __must_check copy_from_user(void *to,
unsigned long n)
{
int sz = __compiletime_object_size(to);
- int ret = -EFAULT;
might_fault();
if (likely(sz == -1 || sz >= n))
- ret = _copy_from_user(to, from, n);
+ n = _copy_from_user(to, from, n);
#ifdef CONFIG_DEBUG_VM
else
WARN(1, "Buffer overflow detected!\n");
#endif
- return ret;
+ return n;
}
static __always_inline __must_check
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index de00c4619a5..53243ca7816 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2434,6 +2434,13 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
cfg = irq_cfg(irq);
raw_spin_lock(&desc->lock);
+ /*
+ * Check if the irq migration is in progress. If so, we
+ * haven't received the cleanup request yet for this irq.
+ */
+ if (cfg->move_in_progress)
+ goto unlock;
+
if (vector == cfg->vector && cpumask_test_cpu(me, cfg->domain))
goto unlock;
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 05ed7ab2ca4..a1a7876cadc 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -733,13 +733,13 @@ struct early_res {
};
static struct early_res early_res[MAX_EARLY_RES] __initdata = {
{ 0, PAGE_SIZE, "BIOS data page", 1 }, /* BIOS data page */
-#ifdef CONFIG_X86_32
+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_TRAMPOLINE)
/*
* But first pinch a few for the stack/trampoline stuff
* FIXME: Don't need the extra page at 4K, but need to fix
* trampoline before removing it. (see the GDT stuff)
*/
- { PAGE_SIZE, PAGE_SIZE, "EX TRAMPOLINE", 1 },
+ { PAGE_SIZE, PAGE_SIZE + PAGE_SIZE, "EX TRAMPOLINE", 1 },
#endif
{}
diff --git a/arch/x86/pci/intel_bus.c b/arch/x86/pci/intel_bus.c
index b7a55dc55d1..f81a2fa8fe2 100644
--- a/arch/x86/pci/intel_bus.c
+++ b/arch/x86/pci/intel_bus.c
@@ -49,6 +49,10 @@ static void __devinit pci_root_bus_res(struct pci_dev *dev)
u64 mmioh_base, mmioh_end;
int bus_base, bus_end;
+ /* some sys doesn't get mmconf enabled */
+ if (dev->cfg_size < 0x120)
+ return;
+
if (pci_root_num >= PCI_ROOT_NR) {
printk(KERN_DEBUG "intel_bus.c: PCI_ROOT_NR is too small\n");
return;