David Daney 949e51bea3 MIPS: Make TASK_SIZE reflect proper size for both 32 and 64 bit processes. ... The TASK_SIZE macro should reflect the size of a user process virtual address space. Previously for 64-bit kernels, this was not the case. The immediate cause of pain was in hugetlbfs/inode.c:hugetlb_get_unmapped_area() where 32-bit processes trying to mmap a huge page would be served a page with an address outside of the 32-bit address range. But there are other uses of TASK_SIZE in the kernel as well that would like an accurate value. The new definition is nice because it now makes TASK_SIZE and TASK_SIZE_OF() yield the same value for any given process. For 32-bit kernels there should be no change, although I did factor out some code in asm/processor.h that became identical for the 32-bit and 64-bit cases. __UA_LIMIT is now set to ~((1 << SEGBITS) - 1) for 64-bit kernels. This should eliminate the possibility of getting a AddressErrorException in the kernel for addresses that pass the access_ok() test. With the patch applied, I can still run o32, n32 and n64 processes, and have an o32 shell fork/exec both n32 and n64 processes. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1701/		2010-10-29 19:08:53 +01:00
..
cpufreq	MIPS: Use set_cpus_allowed_ptr	2010-05-21 21:31:14 +01:00
.gitignore	…
8250-platform.c	…
Makefile	MIPS: add support for hardware performance events (skeleton)	2010-10-29 19:08:48 +01:00
asm-offsets.c	MIPS: Remove unused task_struct.trap_no field.	2010-08-05 13:26:30 +01:00
binfmt_elfn32.c	…
binfmt_elfo32.c	…
branch.c	MIPS: Sanitize restart logics	2010-10-18 16:59:02 +01:00
cevt-bcm1480.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
cevt-ds1287.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
cevt-gt641xx.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
cevt-r4k.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
cevt-sb1250.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
cevt-smtc.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
cevt-txx9.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
cpu-bugs64.c	MIPS: uasm: Add option to export uasm API.	2010-08-05 13:26:21 +01:00
cpu-probe.c	MIPS: Make TASK_SIZE reflect proper size for both 32 and 64 bit processes.	2010-10-29 19:08:53 +01:00
csrc-bcm1480.c	…
csrc-ioasic.c	…
csrc-powertv.c	…
csrc-r4k.c	…
csrc-sb1250.c	…
early_printk.c	…
entry.S	…
ftrace.c	MIPS: Tracing: Cleanup of address space checking	2010-07-05 17:17:30 +01:00
genex.S	…
gpio_txx9.c	…
head.S	…
i8253.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
i8259.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
init_task.c	…
irq-gic.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
irq-gt641xx.c	MIPS: GT641xx: Convert IRQ controller lock to raw spinlock.	2010-02-27 12:53:31 +01:00
irq-msc01.c	…
irq-rm7000.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
irq-rm9000.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
irq.c	MIPS: IRQ: Add stackoverflow detection	2010-10-29 19:08:27 +01:00
irq_cpu.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
irq_txx9.c	MIPS: Add missing #inclusions of <linux/irq.h>	2010-10-07 14:08:54 +01:00
kgdb.c	MIPS: Fix a typo.	2010-10-04 18:33:54 +01:00
kprobes.c	MIPS: kprobe: Add support.	2010-08-05 13:26:29 +01:00
kspd.c	MIPS: kspd: Adjust confusing if indentation	2010-10-04 18:33:54 +01:00
linux32.c	MIPS: Hookup fanotify_init, fanotify_mark, and prlimit64 syscalls.	2010-10-04 18:33:59 +01:00
machine_kexec.c	…
mcount.S	MIPS: tracing: Fix the indentation of mcount.S	2010-08-05 13:26:06 +01:00
mips-mt-fpaff.c	MIPS: MT: Fix build error iFPU affinity code	2010-10-25 08:12:27 -07:00
mips-mt.c	…
mips_ksyms.c	MIPS: Tracing: Add static function tracer support for MIPS	2009-12-17 01:57:21 +00:00
module.c	…
octeon_switch.S	MIPS: Nuke trailing blank lines	2010-02-27 12:53:14 +01:00
perf_event.c	MIPS: Add support for hardware performance events (mipsxx)	2010-10-29 19:08:49 +01:00
perf_event_mipsxx.c	MIPS: Add support for hardware performance events (mipsxx)	2010-10-29 19:08:49 +01:00
proc.c	…
process.c	MIPS: Trace: Don't trace irqsoff for the idle process	2010-04-12 17:26:10 +01:00
prom.c	of/mips: Add device tree support to MIPS	2010-10-21 11:10:10 -06:00
ptrace.c	ptrace: cleanup arch_ptrace() on MIPS	2010-10-27 18:03:11 -07:00
ptrace32.c	…
r4k_fpu.S	…
r4k_switch.S	…
r2300_fpu.S	…
r2300_switch.S	…
r6000_fpu.S	…
relocate_kernel.S	…
reset.c	…
rtlx.c	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
scall32-o32.S	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus	2010-10-18 13:10:36 -07:00
scall64-64.S	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus	2010-10-18 13:10:36 -07:00
scall64-n32.S	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus	2010-10-20 13:18:21 -07:00
scall64-o32.S	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus	2010-10-20 13:18:21 -07:00
setup.c	MIPS: Add a platform hook for swiotlb setup.	2010-10-29 19:08:32 +01:00
signal-common.h	MIPS: Move signal trampolines off of the stack.	2010-04-12 17:26:15 +01:00
signal.c	MIPS: do_sigaltstack() expects userland pointers	2010-10-18 16:59:03 +01:00
signal32.c	MIPS: Move signal trampolines off of the stack.	2010-04-12 17:26:15 +01:00
signal_n32.c	MIPS: do_sigaltstack() expects userland pointers	2010-10-18 16:59:03 +01:00
smp-cmp.c	…
smp-mt.c	…
smp-up.c	…
smp.c	MIPS: Export __cpu_number_map and __cpu_logical_map.	2010-08-05 13:26:21 +01:00
smtc-asm.S	…
smtc-proc.c	…
smtc.c	Fix IRQ flag handling naming	2010-10-07 14:08:55 +01:00
spinlock_test.c	MIPS: Crazy spinlock speed test.	2010-02-27 12:53:42 +01:00
spram.c	…
stacktrace.c	…
sync-r4k.c	…
syscall.c	Make do_execve() take a const filename pointer	2010-08-17 18:07:43 -07:00
time.c	…
topology.c	…
traps.c	MIPS: Allow UserLocal on MIPS_R1 processors	2010-10-29 19:08:53 +01:00
unaligned.c	MIPS: add support for software performance events	2010-10-29 19:08:48 +01:00
vdso.c	MIPS: Make init_vdso a subsys_initcall.	2010-07-26 19:08:16 +01:00
vmlinux.lds.S	MIPS: Tracing: Add IRQENTRY_EXIT section for MIPS	2009-12-17 01:57:24 +00:00
vpe.c	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
watch.c	…