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linux/arch/powerpc
Benjamin Herrenschmidt 5850dd8f6d [POWERPC] cell: hard disable interrupts in power_save()
With soft-disabled interrupts in power_save, we can
still get external exceptions on Cell, even if we are
in pause(0) a.k.a. sleep state.

When the CPU really wakes up through the 0x100 (system reset)
vector, while we have already started processing the 0x500
(external) exception, we get a panic in unrecoverable_exception()
because of the lost state.

This occurred in Systemsim for Cell, but as far as I can see,
it can theoretically occur on any machine that uses the
system reset exception to get out of sleep state.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2006-12-04 20:40:21 +11:00
..
boot [POWERPC] Cleanup zImage handling of kernel entry with flat device tree 2006-12-04 20:39:34 +11:00
configs [POWERPC] cell: Add oprofile support 2006-12-04 20:40:14 +11:00
kernel [POWERPC] powerpc: Workaround for of_platform without "reg" nor "dcr-reg" 2006-12-04 20:40:17 +11:00
lib [POWERPC] Disallow kprobes on emulate_step and branch_taken 2006-11-01 15:14:12 +11:00
math-emu [POWERPC] ppc math-emu needs -fno-builtin-fabs for math.c and fabs.c 2006-09-26 15:24:35 +10:00
mm [POWERPC] setup_kcore(): Fix incorrect function name in panic() call. 2006-12-04 20:39:39 +11:00
oprofile [POWERPC] cell: Add oprofile support 2006-12-04 20:40:14 +11:00
platforms [POWERPC] cell: hard disable interrupts in power_save() 2006-12-04 20:40:21 +11:00
sysdev [POWERPC] Don't compile arch/powerpc mpc52xx_pic driver for ARCH=ppc 2006-12-04 20:39:37 +11:00
xmon [POWERPC] iSeries: fix xmon.c for combined build 2006-12-04 20:39:17 +11:00
Kconfig [POWERPC] Remove ioremap64 and fixup_bigphys_addr 2006-12-04 20:39:04 +11:00
Kconfig.debug
Makefile [POWERPC] Create a "wrapper" script and use it in arch/powerpc/boot 2006-09-28 14:30:02 +10:00