linux-toradex.git, branch v2.6.22.5

Linux 2.6.22.5

2007-08-22T23:23:54+00:00

JFFS2 locking regression fix.

2007-08-22T23:23:27+00:00

Commit a491486a2087ac3dfc00efb4f838c8d684afaf54 introduced a locking
problem in JFFS2 -- we up() the alloc_sem when we weren't previously
holding it. This leads to all kinds of fun behaviour later.

There was a _reason_ for the
	if (1 /* alternative path needs testing */ ||
which the above-mentioned commit removed :)

Discovered and debugged by Giulio Fedel 

Signed-off-by: David Woodhouse 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

i386: Fix double fault handler

2007-08-22T23:23:27+00:00

The new percpu code has apparently broken the doublefault handler
when CONFIG_DEBUG_SPINLOCK is set. Doublefault is handled by
a hardware task, making the check

        SPIN_BUG_ON(lock->owner == current, lock, "recursion");

fault because it uses the FS register to access the percpu data
for current, and that register is zero in the new TSS. (The trace
I saw was on 2.6.20 where it was GS, but it looks like this will
still happen with FS on 2.6.22.)

Initializing FS in the doublefault_tss should fix it.

AK: Also fix broken ptr_ok() and turn printks into KERN_EMERG
AK: And add a PANIC prefix to make clear the system will hang
AK: (e.g. x86-64 will recover)

Signed-off-by: Chuck Ebbert 
Signed-off-by: Andi Kleen 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

i386: Handle P6s without performance counters in nmi watchdog

2007-08-22T23:23:27+00:00

I got an oops while booting a 32bit kernel on KVM because it doesn't
implement performance counters used by the NMI watchdog. Handle this
case.


Cc: Avi Kivity 
Signed-off-by: Andi Kleen 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

x86_64: Change PMDS invocation to single macro

2007-08-22T23:23:26+00:00

Very old binutils (2.12.90...) seem to have trouble with newlines
in assembler macro invocation. They put them into the resulting
argument expansion. In this case this lead to a parse error because
a .rept expression ended up spread over multiple lines. Change the PMDS()
invocation to a single line.

Signed-off-by: Andi Kleen 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

x86_64: Check for .cfi_rel_offset in CFI probe

2007-08-22T23:23:26+00:00

Very old binutils have .cfi_startproc/endproc, but
no .cfi_rel_offset. Check for .cfi_rel_offset too.

Cc: Jan Beulich 
Cc: Sam Ravnborg 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

i386: allow debuggers to access the vsyscall page with compat vDSO

2007-08-22T23:23:26+00:00

From: Jan Beulich 
Signed-off-by: Jan Beulich 
Signed-off-by: Andi Kleen 
Signed-off-by: Greg Kroah-Hartman

Hibernation: do not try to mark invalid PFNs as nosave

2007-08-22T23:23:26+00:00

On some systems some PFNs reported by the early initialization code as 'nosave'
may be invalid. =A0If we try to set the corresponding bits in the hibernation
bitmap, BUG_ON() in memory_bm_find_bit() will be triggered and the system
won't be able to boot (cf. https://bugzilla.novell.com/show_bug.cgi?id=296242).

Prevent this from happening by verifying if the 'nosave' PFNs are valid in
mark_nosave_pages().

Signed-off-by: Rafael J. Wysocki 
Acked-by: Pavel Machek 
Signed-off-by: Greg Kroah-Hartman

libata: add ATI SB700 device IDs to AHCI driver

2007-08-22T23:23:26+00:00

The SATA controller device ID is different according to
the onchip SATA type set in the system BIOS:
Device                              Device ID
SATA in IDE mode             0x4390
SATA in AHCI mode           0x4391
SATA in non-raid5 driver     0x4392
SATA in raid5 driver           0x4393

Although the device ID is different, they use the same AHCI driver
.The attached file is the patch for adding these device
IDs for ATI SB700.

Signed-off-by: su henry 
Signed-off-by: Jeff Garzik 
Cc: Chuck Ebbert 
Signed-off-by: Greg Kroah-Hartman

forcedeth: fix random hang in forcedeth driver when using netconsole

2007-08-22T23:23:26+00:00

If the forcedeth driver receives too much work in an interrupt, it
assumes it has a broken hardware with stuck IRQ. It works around the
problem by disabling interrupts on the nic but makes a printk while
holding device spinlog - which isn't smart thing to do if you have
netconsole on the same nic.

This patch moves the printk's out of the spinlock protected area.


Without this patch the machine hangs hard. With this patch everything
still works even when there is significant increase on CPU usage while
using the nic.

Signed-off-by: Timo Jantunen 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman