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linux_dsm_epyc7002/arch/arm/include/asm/mmu_context.h

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
/*
[ARM] move include/asm-arm to arch/arm/include/asm Move platform independent header files to arch/arm/include/asm, leaving those in asm/arch* and asm/plat* alone. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-02 16:55:55 +07:00
* arch/arm/include/asm/mmu_context.h
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
*
* Copyright (C) 1996 Russell King.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Changelog:
* 27-06-1996 RMK Created
*/
#ifndef __ASM_ARM_MMU_CONTEXT_H
#define __ASM_ARM_MMU_CONTEXT_H
[ARM] Add linux/compiler.h includes where required atomic.h, bitops.h and mmu_context.h are using likely/unlikely. thread_info.h uses __attribute_const__. Hence these files require linux/compiler.h to be included. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-17 00:23:57 +07:00
#include <linux/compiler.h>
[ARM] Remove linux/sched.h from asm/cacheflush.h and asm/uaccess.h ... and fix those drivers that were incorrectly relying upon that include. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-11-30 00:35:51 +07:00
#include <linux/sched.h>
[ARM] Fix second missing declaration of cache_is_vivt() Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-07 02:47:04 +07:00
#include <asm/cacheflush.h>
[ARM] cachetype: move definitions to separate header Rather than pollute asm/cacheflush.h with the cache type definitions, move them to asm/cachetype.h, and include this new header where necessary. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-11 00:10:19 +07:00
#include <asm/cachetype.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
#include <asm/proc-fns.h>
ARM: 7294/1: vectors: use gate_vma for vectors user mapping The current user mapping for the vectors page is inserted as a `horrible hack vma' into each task via arch_setup_additional_pages. This causes problems with the MM subsystem and vm_normal_page, as described here: https://lkml.org/lkml/2012/1/14/55 Following the suggestion from Hugh in the above thread, this patch uses the gate_vma for the vectors user mapping, therefore consolidating the horrible hack VMAs into one. Acked-and-Tested-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-20 18:01:13 +07:00
#include <asm-generic/mm_hooks.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
[ARM] Add section support to ioremap Allow section mappings to be setup using ioremap() and torn down with iounmap(). This requires additional support in the MM context switch to ensure that mappings are properly synchronised when mapped in. Based an original implementation by Deepak Saxena, reworked and ARMv6 support added by rmk. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-30 02:17:15 +07:00
void __check_kvm_seq(struct mm_struct *mm);
[ARM] ARMv6: add CPU_HAS_ASID configuration Presently, we check for the minimum ARM architecture that we're building for to determine whether we need ASID support. This is wrong - if we're going to support a range of CPUs which include ARMv6 or higher, we need the ASID. Convert the checks to use a new configuration symbol, and arrange for ARMv6 and higher CPU entries to select it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-17 16:19:23 +07:00
#ifdef CONFIG_CPU_HAS_ASID
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
ARM: mm: remove IPI broadcasting on ASID rollover ASIDs are allocated to MMU contexts based on a rolling counter. This means that after 255 allocations we must invalidate all existing ASIDs via an expensive IPI mechanism to synchronise all of the online CPUs and ensure that all tasks execute with an ASID from the new generation. This patch changes the rollover behaviour so that we rely instead on the hardware broadcasting of the TLB invalidation to avoid the IPI calls. This works by keeping track of the active ASID on each core, which is then reserved in the case of a rollover so that currently scheduled tasks can continue to run. For cores without hardware TLB broadcasting, we keep track of pending flushes in a cpumask, so cores can flush their local TLB before scheduling a new mm. Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2012-06-15 20:47:31 +07:00
void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk);
#define init_new_context(tsk,mm) ({ mm->context.id = 0; })
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on ASID-capable CPUs Since the ASIDs must be unique to an mm across all the CPUs in a system, the __new_context() function needs to broadcast a context reset event to all the CPUs during ASID allocation if a roll-over occurred. Such IPIs cannot be issued with interrupts disabled and ARM had to define __ARCH_WANT_INTERRUPTS_ON_CTXSW. This patch changes the check_context() function to check_and_switch_context() called from switch_mm(). In case of ASID-capable CPUs (ARMv6 onwards), if a new ASID is needed and the interrupts are disabled, it defers the __new_context() and cpu_switch_mm() calls to the post-lock switch hook where the interrupts are enabled. Setting the reserved TTBR0 was also moved to check_and_switch_context() from cpu_v7_switch_mm(). Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Tested-by: Marc Zyngier <Marc.Zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2011-11-28 20:53:28 +07:00
#else /* !CONFIG_CPU_HAS_ASID */
ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on pre-ARMv6 CPUs This patch removes the __ARCH_WANT_INTERRUPTS_ON_CTXSW definition for ARMv5 and earlier processors. On such processors, the context switch requires a full cache flush. To avoid high interrupt latencies, this patch defers the mm switching to the post-lock switch hook if the interrupts are disabled. Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Tested-by: Marc Zyngier <Marc.Zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2011-11-29 04:57:24 +07:00
#ifdef CONFIG_MMU
ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on ASID-capable CPUs Since the ASIDs must be unique to an mm across all the CPUs in a system, the __new_context() function needs to broadcast a context reset event to all the CPUs during ASID allocation if a roll-over occurred. Such IPIs cannot be issued with interrupts disabled and ARM had to define __ARCH_WANT_INTERRUPTS_ON_CTXSW. This patch changes the check_context() function to check_and_switch_context() called from switch_mm(). In case of ASID-capable CPUs (ARMv6 onwards), if a new ASID is needed and the interrupts are disabled, it defers the __new_context() and cpu_switch_mm() calls to the post-lock switch hook where the interrupts are enabled. Setting the reserved TTBR0 was also moved to check_and_switch_context() from cpu_v7_switch_mm(). Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Tested-by: Marc Zyngier <Marc.Zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2011-11-28 20:53:28 +07:00
static inline void check_and_switch_context(struct mm_struct *mm,
struct task_struct *tsk)
[ARM] Add section support to ioremap Allow section mappings to be setup using ioremap() and torn down with iounmap(). This requires additional support in the MM context switch to ensure that mappings are properly synchronised when mapped in. Based an original implementation by Deepak Saxena, reworked and ARMv6 support added by rmk. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-30 02:17:15 +07:00
{
if (unlikely(mm->context.kvm_seq != init_mm.context.kvm_seq))
__check_kvm_seq(mm);
ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on pre-ARMv6 CPUs This patch removes the __ARCH_WANT_INTERRUPTS_ON_CTXSW definition for ARMv5 and earlier processors. On such processors, the context switch requires a full cache flush. To avoid high interrupt latencies, this patch defers the mm switching to the post-lock switch hook if the interrupts are disabled. Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Tested-by: Marc Zyngier <Marc.Zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2011-11-29 04:57:24 +07:00
if (irqs_disabled())
/*
* cpu_switch_mm() needs to flush the VIVT caches. To avoid
* high interrupt latencies, defer the call and continue
* running with the old mm. Since we only support UP systems
* on non-ASID CPUs, the old mm will remain valid until the
* finish_arch_post_lock_switch() call.
*/
set_ti_thread_flag(task_thread_info(tsk), TIF_SWITCH_MM);
else
cpu_switch_mm(mm->pgd, mm);
[ARM] Add section support to ioremap Allow section mappings to be setup using ioremap() and torn down with iounmap(). This requires additional support in the MM context switch to ensure that mappings are properly synchronised when mapped in. Based an original implementation by Deepak Saxena, reworked and ARMv6 support added by rmk. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-30 02:17:15 +07:00
}
ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on pre-ARMv6 CPUs This patch removes the __ARCH_WANT_INTERRUPTS_ON_CTXSW definition for ARMv5 and earlier processors. On such processors, the context switch requires a full cache flush. To avoid high interrupt latencies, this patch defers the mm switching to the post-lock switch hook if the interrupts are disabled. Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Tested-by: Marc Zyngier <Marc.Zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2011-11-29 04:57:24 +07:00
#define finish_arch_post_lock_switch \
finish_arch_post_lock_switch
static inline void finish_arch_post_lock_switch(void)
{
if (test_and_clear_thread_flag(TIF_SWITCH_MM)) {
struct mm_struct *mm = current->mm;
cpu_switch_mm(mm->pgd, mm);
}
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on pre-ARMv6 CPUs This patch removes the __ARCH_WANT_INTERRUPTS_ON_CTXSW definition for ARMv5 and earlier processors. On such processors, the context switch requires a full cache flush. To avoid high interrupt latencies, this patch defers the mm switching to the post-lock switch hook if the interrupts are disabled. Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Tested-by: Marc Zyngier <Marc.Zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2011-11-29 04:57:24 +07:00
#endif /* CONFIG_MMU */
#define init_new_context(tsk,mm) 0
ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on ASID-capable CPUs Since the ASIDs must be unique to an mm across all the CPUs in a system, the __new_context() function needs to broadcast a context reset event to all the CPUs during ASID allocation if a roll-over occurred. Such IPIs cannot be issued with interrupts disabled and ARM had to define __ARCH_WANT_INTERRUPTS_ON_CTXSW. This patch changes the check_context() function to check_and_switch_context() called from switch_mm(). In case of ASID-capable CPUs (ARMv6 onwards), if a new ASID is needed and the interrupts are disabled, it defers the __new_context() and cpu_switch_mm() calls to the post-lock switch hook where the interrupts are enabled. Setting the reserved TTBR0 was also moved to check_and_switch_context() from cpu_v7_switch_mm(). Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Tested-by: Marc Zyngier <Marc.Zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2011-11-28 20:53:28 +07:00
#endif /* CONFIG_CPU_HAS_ASID */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
#define destroy_context(mm) do { } while(0)
ARM: mm: remove IPI broadcasting on ASID rollover ASIDs are allocated to MMU contexts based on a rolling counter. This means that after 255 allocations we must invalidate all existing ASIDs via an expensive IPI mechanism to synchronise all of the online CPUs and ensure that all tasks execute with an ASID from the new generation. This patch changes the rollover behaviour so that we rely instead on the hardware broadcasting of the TLB invalidation to avoid the IPI calls. This works by keeping track of the active ASID on each core, which is then reserved in the case of a rollover so that currently scheduled tasks can continue to run. For cores without hardware TLB broadcasting, we keep track of pending flushes in a cpumask, so cores can flush their local TLB before scheduling a new mm. Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2012-06-15 20:47:31 +07:00
#define activate_mm(prev,next) switch_mm(prev, next, NULL)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
/*
* This is called when "tsk" is about to enter lazy TLB mode.
*
* mm: describes the currently active mm context
* tsk: task which is entering lazy tlb
* cpu: cpu number which is entering lazy tlb
*
* tsk->mm will be NULL
*/
static inline void
enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
{
}
/*
* This is the actual mm switch as far as the scheduler
* is concerned. No registers are touched. We avoid
* calling the CPU specific function when the mm hasn't
* actually changed.
*/
static inline void
switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk)
{
[ARM] nommu: adjust headers for !MMU ARM systems Majorily based on Hyok Choi's patches, this fixes up the asm-arm header files for mmuless systems. Over and above Hyok's patches: - nommu.h merged into mmu.h (it's only a structure) - nommu_context.h is essentially the same as mmu_context.h, but without the MM switching code. so there's no point having separate files. Also, in memory.h, there's no point #ifndef'ing PHYS_OFFSET and END_MEM - both CONFIG_DRAM_BASE and CONFIG_DRAM_SIZE will always be set by the configuration scripts. Other files have minor formatting changes, but are essentially the same. Hyok's original patches were signed off thusly: Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-21 02:46:52 +07:00
#ifdef CONFIG_MMU
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
unsigned int cpu = smp_processor_id();
[ARM] 5092/1: Fix the I-cache invalidation on ARMv6 and later CPUs This patch adds the I-cache invalidation in update_mmu_cache if the corresponding vma is marked as executable. It also invalidates the I-cache if a thread migrates to a CPU it never ran on. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-06-13 16:28:36 +07:00
#ifdef CONFIG_SMP
/* check for possible thread migration */
cpumask: use mm_cpumask() wrapper: arm Makes code futureproof against the impending change to mm->cpu_vm_mask. It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-09-24 22:34:49 +07:00
if (!cpumask_empty(mm_cpumask(next)) &&
!cpumask_test_cpu(cpu, mm_cpumask(next)))
[ARM] 5092/1: Fix the I-cache invalidation on ARMv6 and later CPUs This patch adds the I-cache invalidation in update_mmu_cache if the corresponding vma is marked as executable. It also invalidates the I-cache if a thread migrates to a CPU it never ran on. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-06-13 16:28:36 +07:00
__flush_icache_all();
#endif
cpumask: use mm_cpumask() wrapper: arm Makes code futureproof against the impending change to mm->cpu_vm_mask. It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-09-24 22:34:49 +07:00
if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next) {
ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on ASID-capable CPUs Since the ASIDs must be unique to an mm across all the CPUs in a system, the __new_context() function needs to broadcast a context reset event to all the CPUs during ASID allocation if a roll-over occurred. Such IPIs cannot be issued with interrupts disabled and ARM had to define __ARCH_WANT_INTERRUPTS_ON_CTXSW. This patch changes the check_context() function to check_and_switch_context() called from switch_mm(). In case of ASID-capable CPUs (ARMv6 onwards), if a new ASID is needed and the interrupts are disabled, it defers the __new_context() and cpu_switch_mm() calls to the post-lock switch hook where the interrupts are enabled. Setting the reserved TTBR0 was also moved to check_and_switch_context() from cpu_v7_switch_mm(). Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Tested-by: Marc Zyngier <Marc.Zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2011-11-28 20:53:28 +07:00
check_and_switch_context(next, tsk);
[ARM SMP] Do not clear cpu_vm_mask for VIPT caches Since we do not invalidate TLBs/caches on MM switches, we should not clear the cpu_vm_mask for the CPU. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-04 03:32:45 +07:00
if (cache_is_vivt())
cpumask: use mm_cpumask() wrapper: arm Makes code futureproof against the impending change to mm->cpu_vm_mask. It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-09-24 22:34:49 +07:00
cpumask_clear_cpu(cpu, mm_cpumask(prev));
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
}
[ARM] nommu: adjust headers for !MMU ARM systems Majorily based on Hyok Choi's patches, this fixes up the asm-arm header files for mmuless systems. Over and above Hyok's patches: - nommu.h merged into mmu.h (it's only a structure) - nommu_context.h is essentially the same as mmu_context.h, but without the MM switching code. so there's no point having separate files. Also, in memory.h, there's no point #ifndef'ing PHYS_OFFSET and END_MEM - both CONFIG_DRAM_BASE and CONFIG_DRAM_SIZE will always be set by the configuration scripts. Other files have minor formatting changes, but are essentially the same. Hyok's original patches were signed off thusly: Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-21 02:46:52 +07:00
#endif
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 05:20:36 +07:00
}
#define deactivate_mm(tsk,mm) do { } while (0)
#endif
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