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816242da37
kernel-ark/arch/sparc64/kernel
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David S. Miller 816242da37 [SPARC64]: Add boot option to force UltraSPARC-III P-Cache on. 
Older UltraSPARC-III chips have a P-Cache bug that makes us disable it
by default at boot time.

However, this does hurt performance substantially, particularly with
memcpy(), and the bug is _incredibly_ obscure.  I have never seen it
triggered in practice, ever.

So provide a "-P" boot option that forces the P-Cache on.  It taints
the kernel, so if it does trigger and cause some data corruption or
OOPS, we will find out in the logs that this option was on when it
happened.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-23 15:52:08 -07:00
..
auxio.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binfmt_aout32.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binfmt_elf32.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
central.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
chmc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
devices.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dtlb_backend.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dtlb_base.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dtlb_prot.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ebus.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
entry.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
etrap.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
head.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
idprom.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
init_task.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ioctl32.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
iommu_common.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
iommu_common.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.c [SPARC64]: Disable IRQ forwarding. 2005-05-03 22:05:43 -07:00
isa.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
itlb_base.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kprobes.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
module.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci_common.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci_impl.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci_iommu.c [SPARC64]: Fix bad performance side effect of strbuf timeout changes. 2005-05-20 11:40:32 -07:00
pci_psycho.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci_sabre.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci_schizo.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
power.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
process.c [SPARC]: Remove legacy stuff from cpu_idle(). 2005-05-05 14:53:01 -07:00
ptrace.c [PATCH] convert that currently tests _NSIG directly to use valid_signal() 2005-05-01 08:59:14 -07:00
rtrap.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sbus.c [SPARC64]: Fix bad performance side effect of strbuf timeout changes. 2005-05-20 11:40:32 -07:00
semaphore.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.c [SPARC64]: Add boot option to force UltraSPARC-III P-Cache on. 2005-05-23 15:52:08 -07:00
signal32.c [PATCH] sparc64: Fix copy_sigingo_to_user32() 2005-04-17 18:03:12 -07:00
signal.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smp.c [SPARC64]: Add boot option to force UltraSPARC-III P-Cache on. 2005-05-23 15:52:08 -07:00
sparc64_ksyms.c [SPARC64]: Kill useless __pte_alloc_one_kernel indirection 2005-05-05 14:27:56 -07:00
starfire.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sunos_ioctl32.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sys32.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sys_sparc32.c [PATCH] sparc64: Fix stat 2005-04-18 15:13:15 -07:00
sys_sparc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sys_sunos32.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
systbls.S [PATCH] sparc64: Fix stat 2005-04-18 15:13:15 -07:00
time.c [PATCH] mostek bogus sparse annotations fixed 2005-04-24 12:28:36 -07:00
trampoline.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
traps.c [SPARC64]: Add boot option to force UltraSPARC-III P-Cache on. 2005-05-23 15:52:08 -07:00
ttable.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unaligned.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
us2e_cpufreq.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
us3_cpufreq.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vmlinux.lds.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
winfixup.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00