David S. Miller cb3042d609 sparc64: Make sure %pil interrupts are enabled during hypervisor yield. ... In arch_cpu_idle() we must enable %pil based interrupts before potentially invoking the hypervisor cpu yield call. As per the Hypervisor API documentation for cpu_yield: Interrupts which are blocked by some mechanism other that pstate.ie (for example %pil) are not guaranteed to cause a return from this service. It seems that only first generation Niagara chips are hit by this bug. My best guess is that later chips implement this in hardware and wake up anyways from %pil events, whereas in first generation chips the yield is implemented completely in hypervisor code and requires %pil to be enabled in order to wake properly from this call. Fixes: 87fa05aeb3 ("sparc: Use generic idle loop") Reported-by: Fabio M. Di Nitto <fabbione@fabbione.net> Reported-by: Jan Engelhardt <jengelh@inai.de> Tested-by: Jan Engelhardt <jengelh@inai.de> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-03-24 14:45:12 -04:00
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boot	sparc: Fix piggyback with newer binutils.	2012-12-03 11:24:25 -08:00
configs	perf: Remove PERF_COUNTERS config option	2012-04-26 13:52:52 +02:00
crypto	sparc64: Set CRYPTO_TFM_REQ_MAY_SLEEP consistently in CAMELLIA code.	2012-12-19 15:44:31 -08:00
include	sparc: Hook up sched_setattr and sched_getattr syscalls.	2014-01-29 00:45:06 -08:00
kernel	sparc64: Make sure %pil interrupts are enabled during hypervisor yield.	2014-03-24 14:45:12 -04:00
lib	sparc64: Make PAGE_OFFSET variable.	2013-11-12 15:22:34 -08:00
math-emu	sparc64: Make montmul/montsqr/mpmul usable in 32-bit threads.	2012-10-26 15:18:37 -07:00
mm	sparc64:tsb.c:use array size macro rather than number	2014-03-17 15:55:49 -04:00
net	bpf: do not use reciprocal divide	2014-01-15 17:02:08 -08:00
oprofile
power	sparc64: Hibernation support	2013-03-20 11:06:54 -07:00
prom	sparc: delete non-required instances of include <linux/init.h>	2014-01-28 23:38:23 -08:00
Kbuild	sparc64: Add SHA1 driver making use of the 'sha1' instruction.	2012-08-20 15:08:49 -07:00
Kconfig	sparc32: fix build failure for arch_jump_label_transform	2014-02-19 19:49:48 -05:00
Kconfig.debug	lib: consolidate DEBUG_STACK_USAGE option	2011-05-25 08:39:54 -07:00
Makefile	sparc64: Hibernation support	2013-03-20 11:06:54 -07:00