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David S. Miller b445e26cbf [SPARC64]: Avoid membar instructions in delay slots. 
In particular, avoid membar instructions in the delay
slot of a jmpl instruction.

UltraSPARC-I, II, IIi, and IIe have a bug, documented in
the UltraSPARC-IIi User's Manual, Appendix K, Erratum 51

The long and short of it is that if the IMU unit misses
on a branch or jmpl, and there is a store buffer synchronizing
membar in the delay slot, the chip can stop fetching instructions.

If interrupts are enabled or some other trap is enabled, the
chip will unwedge itself, but performance will suffer.

We already had a workaround for this bug in a few spots, but
it's better to have the entire tree sanitized for this rule.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-06-27 15:42:04 -07:00
..
acpi Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
asm-alpha [PATCH] remove non-DISCONTIG use of pgdat->node_mem_map 2005-06-23 09:45:00 -07:00
asm-arm [PATCH] ARM: 2756/1: add ixp2000 msf mapping 2005-06-26 22:24:17 +01:00
asm-arm26 [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
asm-cris [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
asm-frv [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
asm-generic [PATCH] kexec: vmlinux: fix physical addresses 2005-06-25 16:24:47 -07:00
asm-h8300 [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
asm-i386 [PATCH] kdump: Routines for copying dump pages 2005-06-25 16:24:53 -07:00
asm-ia64 [PATCH] sched: cleanup context switch locking 2005-06-25 16:24:43 -07:00
asm-m32r [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
asm-m68k [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
asm-m68knommu [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
asm-mips [PATCH] sched: cleanup context switch locking 2005-06-25 16:24:43 -07:00
asm-parisc [PATCH] compat: introduce compat_time_t 2005-06-23 09:45:32 -07:00
asm-ppc [PATCH] kexec: kexec ppc support 2005-06-25 16:24:51 -07:00
asm-ppc64 [PATCH] ppc64: kexec support for ppc64 2005-06-25 16:24:51 -07:00
asm-s390 [PATCH] kexec: s390 support 2005-06-25 16:24:51 -07:00
asm-sh [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
asm-sh64 [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
asm-sparc [PATCH] sched: cleanup context switch locking 2005-06-25 16:24:43 -07:00
asm-sparc64 [SPARC64]: Avoid membar instructions in delay slots. 2005-06-27 15:42:04 -07:00
asm-um [PATCH] uml: add profile_pc for i386 2005-06-25 16:24:36 -07:00
asm-v850 [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
asm-x86_64 [PATCH] Kdump: Export crash notes section address through sysfs 2005-06-25 16:24:51 -07:00
asm-xtensa [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 8 2005-06-24 00:05:22 -07:00
linux Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2005-06-26 19:16:33 -07:00
math-emu Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
media [PATCH] v4l: update for SAA7134 cards 2005-06-24 00:06:39 -07:00
mtd Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
net Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2005-06-24 00:31:46 -07:00
pcmcia [PATCH] yenta TI: turn off interrupts during card power-on #2 2005-06-23 09:45:31 -07:00
rxrpc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
scsi [PATCH] I2O: Adaptec specific SG_IO access, firmware access through sysfs and 2400A workaround 2005-06-24 00:05:28 -07:00
sound [PATCH] create a kstrdup library function 2005-06-23 09:45:18 -07:00
video [PATCH] Clean-up and bug fix for tdfxfb framebuffer size detection 2005-05-01 08:59:25 -07:00