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619b6e18fc
linux_dsm_epyc7002/arch/mips/kernel
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Maciej W. Rozycki 619b6e18fc [MIPS] R4000/R4400 daddiu erratum workaround 
This complements the generic R4000/R4400 errata workaround code and adds 
bits for the daddiu problem.  In most places it just modifies handwritten 
assembly code so that the assembler is allowed to use a temporary register 
as daddiu may now be treated as a macro that expands to a sequence of li 
and daddu.  It is the AT register or, where AT is unavailable or used 
explicitly for another purpose, an explicitly-named register is selected, 
using the .set at=<reg> feature added recently to gas.  This feature is 
only used if CONFIG_CPU_DADDI_WORKAROUNDS has been set, so if the 
workaround remains disabled, the required version of binutils stays 
unchanged.

 Similarly, daddiu instructions put in branch delay slots in noreorder 
fragments are now taken out of them and the assembler is allowed to 
reorder them itself as possible (which it does making the whole idea of 
scheduling them into delay slots manually questionable).

 Also in the very few places where such a simple conversion was not 
possible, a handcoded longer sequence is implemented.

 Other than that there are changes to code responsible for building the 
TLB fault and page clear/copy handlers to avoid daddiu as appropriate.  
These are only effective if the erratum is verified to be present at the 
run time.

 Finally there is a trivial update to __delay(), because it uses daddiu in 
a branch delay slot.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-01-29 10:14:55 +00:00
..
8250-platform.c [MIPS] Put an end to <asm/serial.h>'s long and annyoing existence 2007-07-10 17:33:01 +01:00
asm-offsets.c [MIPS] Extract {PGD,PMD,PTE}_ORDER into asm-offset.h 2007-08-27 02:16:49 +01:00
binfmt_elfn32.c [PATCH] elf: Always define elf_addr_t in linux/elf.h 2006-12-07 08:39:38 -08:00
binfmt_elfo32.c [MIPS] checkfiles: Fix "need space after that ','" errors. 2007-10-11 23:46:15 +01:00
branch.c [MIPS] Add some __user tags 2007-07-13 17:40:01 +01:00
cevt-bcm1480.c [MIPS] Sibyte: Stop timers before programming next even. 2007-11-15 23:21:50 +00:00
cevt-gt641xx.c [MIPS] time: set clock before clockevent_delta2ns() in GT641xx. 2007-10-29 19:35:33 +00:00
cevt-r4k.c [MIPS] Handle R4000/R4400 mfc0 from count register. 2007-11-26 17:26:14 +00:00
cevt-sb1250.c [MIPS] Sibyte: Stop timers before programming next even. 2007-11-15 23:21:50 +00:00
cevt-txx9.c [MIPS] txx9tmr clockevent/clocksource driver 2007-10-29 19:35:35 +00:00
cpu-bugs64.c [MIPS] R4000/R4400 errata workarounds 2008-01-29 10:14:54 +00:00
cpu-probe.c [MIPS] Fix shadow register support. 2007-11-15 23:21:49 +00:00
csrc-bcm1480.c [MIPS] Sibyte: Split and move clock code. 2007-11-02 16:13:47 +00:00
csrc-r4k.c [MIPS] Fix build. 2007-12-01 00:39:37 +00:00
csrc-sb1250.c [MIPS] Sibyte: Fix name of clocksource. 2007-11-15 23:21:51 +00:00
early_printk.c [MIPS] early_printk: allow the early console to run earlier 2007-05-11 14:28:30 +01:00
entry.S [MIPS] SMTC: Interrupt mask backstop hack 2007-07-12 17:41:17 +01:00
gdb-low.S [MIPS] TRACE_IRQFLAGS_SUPPORT support. 2006-07-13 21:26:09 +01:00
gdb-stub.c [MIPS] Kill num_online_cpus() loops. 2007-10-11 23:46:18 +01:00
genex.S [MIPS] R4000/R4400 daddiu erratum workaround 2008-01-29 10:14:55 +00:00
head.S [MIPS] Fix CONFIG_BOOT_RAW. 2008-01-07 15:32:04 +00:00
i8253.c Use i8253.c lock for PC speaker on MIPS, too. 2007-11-02 19:39:18 -07:00
i8259.c Driver core: change sysdev classes to use dynamic kobject names 2008-01-24 20:40:40 -08:00
init_task.c [PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c 2006-10-02 07:57:20 -07:00
irix5sys.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irixelf.c pid namespaces: round up the API 2007-10-19 11:53:37 -07:00
irixinv.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
irixioctl.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
irixsig.c mips: undo locking on error path returns 2007-11-14 18:45:42 -08:00
irq_cpu.c [MIPS] irq_cpu: use handle_percpu_irq handler to avoid dropping interrupts. 2007-11-15 23:21:52 +00:00
irq_txx9.c [MIPS] Remove dead code from irq_txx9.c 2007-08-27 02:16:54 +01:00
irq-gt641xx.c [MIPS] Add GT641xx IRQ routines. 2007-10-11 23:46:04 +01:00
irq-msc01.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
irq-rm7000.c [MIPS] irq_cpu: use handle_percpu_irq handler to avoid dropping interrupts. 2007-11-15 23:21:52 +00:00
irq-rm9000.c [MIPS] irq_cpu: use handle_percpu_irq handler to avoid dropping interrupts. 2007-11-15 23:21:52 +00:00
irq.c [MIPS] checkfiles: Fix "need space after that ','" errors. 2007-10-11 23:46:15 +01:00
kspd.c [MIPS] Converting most array size calculations to use ARRAY_SIZE(). 2008-01-29 10:14:54 +00:00
linux32.c remove include/asm-*/ipc.h 2007-10-17 08:42:55 -07:00
machine_kexec.c [MIPS] Unconditionally writeback and invalidate caches on kexec. 2007-08-27 02:16:59 +01:00
Makefile [MIPS] Only build r4k clocksource for systems that work ok with it. 2007-11-26 17:26:14 +00:00
mips_ksyms.c [MIPS] Export __copy_user_inatomic. 2007-03-07 00:07:17 +00:00
mips-mt-fpaff.c cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus() 2008-01-25 21:08:02 +01:00
mips-mt.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
module.c Fix misspellings of "system", "controller", "interrupt" and "necessary". 2007-10-19 23:10:43 +02:00
pcspeaker.c [MIPS] Rename PC speaker code 2007-07-12 17:41:23 +01:00
proc.c [MIPS] Fix shadow register support. 2007-11-15 23:21:49 +00:00
process.c [MIPS] Ensure that ST0_FR is never set on a 32 bit kernel 2007-12-14 17:34:30 +00:00
ptrace32.c [MIPS] Store sign-extend register values for PTRACE_GETREGS 2007-10-29 19:35:36 +00:00
ptrace.c [MIPS] Store sign-extend register values for PTRACE_GETREGS 2007-10-29 19:35:36 +00:00
r4k_fpu.S [MIPS] Check FCSR for pending interrupts, alternative version 2007-03-17 01:03:25 +00:00
r4k_switch.S [MIPS] Fix resume for 64K page size on R4000 class processors. 2007-07-12 17:41:05 +01:00
r2300_fpu.S kbuild: mips use generic asm-offsets.h support 2005-09-09 22:32:31 +02:00
r2300_switch.S [MIPS] Disallow CpU exception in kernel again. 2007-04-20 14:58:37 +01:00
r6000_fpu.S kbuild: mips use generic asm-offsets.h support 2005-09-09 22:32:31 +02:00
relocate_kernel.S [MIPS] Kexec: Fix several 64-bit bugs. 2007-07-31 21:35:36 +01:00
reset.c [MIPS] Export pm_power_off 2006-12-10 21:52:11 +00:00
rtlx.c [MIPS] rtlx: Fix build error. 2007-09-14 19:08:42 +01:00
scall32-o32.S [MIPS] Wire up the fallocate syscall. 2007-07-31 21:35:22 +01:00
scall64-64.S [MIPS] Wire up the fallocate syscall. 2007-07-31 21:35:22 +01:00
scall64-n32.S [MIPS] N32 needs to use the compat version of sys_nfsservctl. 2007-11-15 23:21:52 +00:00
scall64-o32.S [MIPS] Fix fallocate on o32 binary compat ABI 2007-09-28 19:27:20 +01:00
semaphore.c Always use ".set mips3" rather than select between "mips2" or "mips3" 2005-10-29 19:31:31 +01:00
setup.c [MIPS] R4000/R4400 errata workarounds 2008-01-29 10:14:54 +00:00
signal32.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
signal_n32.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
signal-common.h [MIPS] Retry {save,restore}_fp_context if failed in atomic context. 2007-04-20 14:58:37 +01:00
signal.c [MIPS] checkfiles: Fix "need space after that ','" errors. 2007-10-11 23:46:15 +01:00
smp-mt.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
smp-up.c [MIPS] Only build r4k clocksource for systems that work ok with it. 2007-11-26 17:26:14 +00:00
smp.c [MIPS] SMP: Fix use of cpumasks. 2007-10-13 00:53:01 +01:00
smtc-asm.S [MIPS] SMTC: Don't set and restore irqregs ptr from self_ipi. 2007-06-11 18:20:53 +01:00
smtc-proc.c [MIPS] MT: Improved multithreading support. 2006-04-19 04:14:28 +02:00
smtc.c [MIPS] SMTC: Allow control over TC assignment to vpe0. 2007-10-29 19:35:32 +00:00
stacktrace.c simplify the stacktrace code 2007-05-08 11:14:58 -07:00
syscall.c [MIPS] Add len and addr validation for MAP_FIXED mappings. 2007-10-29 19:35:36 +00:00
sysirix.c pid namespaces: round up the API 2007-10-19 11:53:37 -07:00
time.c [MIPS] Assume R4000/R4400 newer than 3.0 don't have the mfc0 count bug 2008-01-07 15:32:03 +00:00
topology.c [MIPS] Do topology_init even on uniprocessor kernels. 2006-11-29 16:21:34 +00:00
traps.c [MIPS] Ensure that ST0_FR is never set on a 32 bit kernel 2007-12-14 17:34:30 +00:00
unaligned.c [MIPS] Fix "no space between function name and open parenthesis" warnings. 2007-10-11 23:46:15 +01:00
vmlinux.lds.S [MIPS] vmlinux.ld.S: correctly indent .data section 2007-10-29 19:35:37 +00:00
vpe.c [MIPS] vpe: Add missing "space" 2007-11-26 17:26:15 +00:00