From: Richard Henderson <rth@twiddle.net>
To: Chris Meadors <clubneon@hereintown.net>
Cc: linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org
Subject: Re: [PATCH] Needed to get 2.5.7 to compile and link on Alpha [1/10]
Date: Thu, 28 Mar 2002 09:53:46 -0800 [thread overview]
Message-ID: <20020328095346.A23600@twiddle.net> (raw)
In-Reply-To: <E16o6CB-0005Ny-00@lightning.hereintown.net>
On Thu, Mar 21, 2002 at 12:17:47PM -0500, Chris Meadors wrote:
> This is probally the Wrong Thing to do, but making pgalloc.h include
> highmem.h instead of the other way around, thus breaking at least the
> Alpha and Sparc64 platforms wasn't much less Wrong.
Actually, this breaks x86. I've been back and forth with Linus
about this a couple of times. My latest attempt follows. It was
done after he left for vacation, so I havn't heard if he hates
it yet...
r~
bk://are.twiddle.net:8080/flush-hdrs
# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.537 -> 1.538
# include/asm-alpha/pgalloc.h 1.7 -> 1.8
# arch/alpha/kernel/sys_rx164.c 1.1 -> 1.2
# mm/vmalloc.c 1.10 -> 1.11
# arch/alpha/kernel/sys_sio.c 1.2 -> 1.3
# arch/alpha/kernel/sys_ruffian.c 1.3 -> 1.4
# include/asm-i386/pgalloc.h 1.13 -> 1.14
# arch/alpha/kernel/sys_jensen.c 1.3 -> 1.4
# mm/mmap.c 1.22 -> 1.23
# arch/alpha/kernel/sys_sable.c 1.2 -> 1.3
# arch/alpha/kernel/sys_eiger.c 1.3 -> 1.4
# kernel/fork.c 1.37 -> 1.38
# arch/i386/kernel/vm86.c 1.6 -> 1.7
# mm/vmscan.c 1.58 -> 1.59
# arch/alpha/kernel/sys_takara.c 1.1 -> 1.2
# arch/alpha/kernel/core_irongate.c 1.4 -> 1.5
# kernel/module.c 1.8 -> 1.9
# arch/alpha/kernel/sys_dp264.c 1.6 -> 1.7
# fs/binfmt_aout.c 1.9 -> 1.10
# arch/alpha/kernel/sys_eb64p.c 1.1 -> 1.2
# include/linux/highmem.h 1.13 -> 1.14
# arch/alpha/kernel/sys_mikasa.c 1.1 -> 1.2
# arch/alpha/kernel/sys_noritake.c 1.1 -> 1.2
# arch/i386/mm/init.c 1.11 -> 1.12
# arch/i386/mm/ioremap.c 1.5 -> 1.6
# arch/alpha/kernel/sys_cabriolet.c 1.4 -> 1.5
# arch/alpha/mm/fault.c 1.5 -> 1.6
# mm/msync.c 1.2 -> 1.3
# arch/alpha/kernel/sys_nautilus.c 1.3 -> 1.4
# mm/mprotect.c 1.8 -> 1.9
# arch/alpha/kernel/sys_wildfire.c 1.2 -> 1.3
# arch/alpha/kernel/sys_alcor.c 1.2 -> 1.3
# mm/memory.c 1.54 -> 1.55
# arch/alpha/kernel/sys_sx164.c 1.2 -> 1.3
# arch/alpha/kernel/sys_miata.c 1.4 -> 1.5
# mm/mremap.c 1.10 -> 1.11
# include/asm-i386/pgtable.h 1.9 -> 1.10
# arch/i386/kernel/acpi.c 1.1 -> 1.2
# arch/alpha/kernel/sys_rawhide.c 1.4 -> 1.5
# arch/alpha/kernel/sys_titan.c 1.4 -> 1.5
# (new) -> 1.1 include/asm-i386/cacheflush.h
# (new) -> 1.1 include/asm-alpha/tlbflush.h
# (new) -> 1.1 include/asm-i386/tlbflush.h
# (new) -> 1.1 include/asm-alpha/cacheflush.h
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 02/03/25 rth@are.twiddle.net 1.538
# Break an include loop by moving cache flushing routines from
# asm/pgtable.h and/or asm/pgalloc.h to asm/cacheflush.h, and
# tlb flushing routines to asm/tlbflush.h.
# --------------------------------------------
#
diff -Nru a/arch/alpha/kernel/core_irongate.c b/arch/alpha/kernel/core_irongate.c
--- a/arch/alpha/kernel/core_irongate.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/core_irongate.c Thu Mar 28 09:52:12 2002
@@ -19,6 +19,8 @@
#include <asm/system.h>
#include <asm/pci.h>
#include <asm/hwrpb.h>
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
#define __EXTERN_INLINE inline
#include <asm/io.h>
diff -Nru a/arch/alpha/kernel/sys_alcor.c b/arch/alpha/kernel/sys_alcor.c
--- a/arch/alpha/kernel/sys_alcor.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_alcor.c Thu Mar 28 09:52:12 2002
@@ -26,6 +26,7 @@
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <asm/core_cia.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_cabriolet.c b/arch/alpha/kernel/sys_cabriolet.c
--- a/arch/alpha/kernel/sys_cabriolet.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_cabriolet.c Thu Mar 28 09:52:12 2002
@@ -28,6 +28,7 @@
#include <asm/core_apecs.h>
#include <asm/core_cia.h>
#include <asm/core_lca.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_dp264.c b/arch/alpha/kernel/sys_dp264.c
--- a/arch/alpha/kernel/sys_dp264.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_dp264.c Thu Mar 28 09:52:12 2002
@@ -30,6 +30,7 @@
#include <asm/pgtable.h>
#include <asm/core_tsunami.h>
#include <asm/hwrpb.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_eb64p.c b/arch/alpha/kernel/sys_eb64p.c
--- a/arch/alpha/kernel/sys_eb64p.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_eb64p.c Thu Mar 28 09:52:12 2002
@@ -27,6 +27,7 @@
#include <asm/core_apecs.h>
#include <asm/core_lca.h>
#include <asm/hwrpb.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_eiger.c b/arch/alpha/kernel/sys_eiger.c
--- a/arch/alpha/kernel/sys_eiger.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_eiger.c Thu Mar 28 09:52:12 2002
@@ -27,6 +27,7 @@
#include <asm/pgtable.h>
#include <asm/core_tsunami.h>
#include <asm/hwrpb.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_jensen.c b/arch/alpha/kernel/sys_jensen.c
--- a/arch/alpha/kernel/sys_jensen.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_jensen.c Thu Mar 28 09:52:12 2002
@@ -26,6 +26,7 @@
#include <asm/irq.h>
#include <asm/mmu_context.h>
#include <asm/pgtable.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_miata.c b/arch/alpha/kernel/sys_miata.c
--- a/arch/alpha/kernel/sys_miata.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_miata.c Thu Mar 28 09:52:12 2002
@@ -24,6 +24,7 @@
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/core_cia.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_mikasa.c b/arch/alpha/kernel/sys_mikasa.c
--- a/arch/alpha/kernel/sys_mikasa.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_mikasa.c Thu Mar 28 09:52:12 2002
@@ -26,6 +26,7 @@
#include <asm/pgtable.h>
#include <asm/core_apecs.h>
#include <asm/core_cia.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
--- a/arch/alpha/kernel/sys_nautilus.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_nautilus.c Thu Mar 28 09:52:12 2002
@@ -43,6 +43,7 @@
#include <asm/pgtable.h>
#include <asm/core_irongate.h>
#include <asm/hwrpb.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_noritake.c b/arch/alpha/kernel/sys_noritake.c
--- a/arch/alpha/kernel/sys_noritake.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_noritake.c Thu Mar 28 09:52:12 2002
@@ -27,6 +27,7 @@
#include <asm/pgtable.h>
#include <asm/core_apecs.h>
#include <asm/core_cia.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_rawhide.c b/arch/alpha/kernel/sys_rawhide.c
--- a/arch/alpha/kernel/sys_rawhide.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_rawhide.c Thu Mar 28 09:52:12 2002
@@ -23,6 +23,7 @@
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/core_mcpcia.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_ruffian.c b/arch/alpha/kernel/sys_ruffian.c
--- a/arch/alpha/kernel/sys_ruffian.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_ruffian.c Thu Mar 28 09:52:12 2002
@@ -24,6 +24,7 @@
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/core_cia.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_rx164.c b/arch/alpha/kernel/sys_rx164.c
--- a/arch/alpha/kernel/sys_rx164.c Thu Mar 28 09:52:11 2002
+++ b/arch/alpha/kernel/sys_rx164.c Thu Mar 28 09:52:11 2002
@@ -24,6 +24,7 @@
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/core_polaris.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_sable.c b/arch/alpha/kernel/sys_sable.c
--- a/arch/alpha/kernel/sys_sable.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_sable.c Thu Mar 28 09:52:12 2002
@@ -24,6 +24,7 @@
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/core_t2.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_sio.c b/arch/alpha/kernel/sys_sio.c
--- a/arch/alpha/kernel/sys_sio.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_sio.c Thu Mar 28 09:52:12 2002
@@ -29,6 +29,7 @@
#include <asm/pgtable.h>
#include <asm/core_apecs.h>
#include <asm/core_lca.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_sx164.c b/arch/alpha/kernel/sys_sx164.c
--- a/arch/alpha/kernel/sys_sx164.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_sx164.c Thu Mar 28 09:52:12 2002
@@ -25,6 +25,7 @@
#include <asm/pgtable.h>
#include <asm/core_cia.h>
#include <asm/hwrpb.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_takara.c b/arch/alpha/kernel/sys_takara.c
--- a/arch/alpha/kernel/sys_takara.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_takara.c Thu Mar 28 09:52:12 2002
@@ -23,6 +23,7 @@
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/core_cia.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_titan.c b/arch/alpha/kernel/sys_titan.c
--- a/arch/alpha/kernel/sys_titan.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_titan.c Thu Mar 28 09:52:12 2002
@@ -28,6 +28,7 @@
#include <asm/pgtable.h>
#include <asm/core_titan.h>
#include <asm/hwrpb.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/kernel/sys_wildfire.c b/arch/alpha/kernel/sys_wildfire.c
--- a/arch/alpha/kernel/sys_wildfire.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/kernel/sys_wildfire.c Thu Mar 28 09:52:12 2002
@@ -23,6 +23,7 @@
#include <asm/pgtable.h>
#include <asm/core_wildfire.h>
#include <asm/hwrpb.h>
+#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
diff -Nru a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c
--- a/arch/alpha/mm/fault.c Thu Mar 28 09:52:12 2002
+++ b/arch/alpha/mm/fault.c Thu Mar 28 09:52:12 2002
@@ -12,7 +12,7 @@
#define __EXTERN_INLINE inline
#include <asm/mmu_context.h>
-#include <asm/pgalloc.h>
+#include <asm/tlbflush.h>
#undef __EXTERN_INLINE
#include <linux/signal.h>
diff -Nru a/arch/i386/kernel/acpi.c b/arch/i386/kernel/acpi.c
--- a/arch/i386/kernel/acpi.c Thu Mar 28 09:52:12 2002
+++ b/arch/i386/kernel/acpi.c Thu Mar 28 09:52:12 2002
@@ -43,6 +43,7 @@
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/io_apic.h>
+#include <asm/tlbflush.h>
#define PREFIX "ACPI: "
diff -Nru a/arch/i386/kernel/vm86.c b/arch/i386/kernel/vm86.c
--- a/arch/i386/kernel/vm86.c Thu Mar 28 09:52:12 2002
+++ b/arch/i386/kernel/vm86.c Thu Mar 28 09:52:12 2002
@@ -12,10 +12,12 @@
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
+#include <linux/highmem.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
#include <asm/io.h>
+#include <asm/tlbflush.h>
/*
* Known problems:
diff -Nru a/arch/i386/mm/init.c b/arch/i386/mm/init.c
--- a/arch/i386/mm/init.c Thu Mar 28 09:52:12 2002
+++ b/arch/i386/mm/init.c Thu Mar 28 09:52:12 2002
@@ -37,6 +37,7 @@
#include <asm/e820.h>
#include <asm/apic.h>
#include <asm/tlb.h>
+#include <asm/tlbflush.h>
mmu_gather_t mmu_gathers[NR_CPUS];
unsigned long highstart_pfn, highend_pfn;
@@ -573,7 +574,8 @@
}
#if defined(CONFIG_X86_PAE)
-struct kmem_cache_s *pae_pgd_cachep;
+static struct kmem_cache_s *pae_pgd_cachep;
+
void __init pgtable_cache_init(void)
{
/*
@@ -584,4 +586,96 @@
if (!pae_pgd_cachep)
panic("init_pae(): Cannot alloc pae_pgd SLAB cache");
}
+
+pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+ int i;
+ pgd_t *pgd = kmem_cache_alloc(pae_pgd_cachep, GFP_KERNEL);
+
+ if (pgd) {
+ for (i = 0; i < USER_PTRS_PER_PGD; i++) {
+ unsigned long pmd = __get_free_page(GFP_KERNEL);
+ if (!pmd)
+ goto out_oom;
+ clear_page(pmd);
+ set_pgd(pgd + i, __pgd(1 + __pa(pmd)));
+ }
+ memcpy(pgd + USER_PTRS_PER_PGD,
+ swapper_pg_dir + USER_PTRS_PER_PGD,
+ (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
+ }
+ return pgd;
+out_oom:
+ for (i--; i >= 0; i--)
+ free_page((unsigned long)__va(pgd_val(pgd[i])-1));
+ kmem_cache_free(pae_pgd_cachep, pgd);
+ return NULL;
+}
+
+void pgd_free(pgd_t *pgd)
+{
+ int i;
+
+ for (i = 0; i < USER_PTRS_PER_PGD; i++)
+ free_page((unsigned long)__va(pgd_val(pgd[i])-1));
+ kmem_cache_free(pae_pgd_cachep, pgd);
+}
+
+#else
+
+pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+ pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL);
+
+ if (pgd) {
+ memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
+ memcpy(pgd + USER_PTRS_PER_PGD,
+ swapper_pg_dir + USER_PTRS_PER_PGD,
+ (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
+ }
+ return pgd;
+}
+
+void pgd_free(pgd_t *pgd)
+{
+ free_page((unsigned long)pgd);
+}
#endif /* CONFIG_X86_PAE */
+
+pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
+{
+ int count = 0;
+ pte_t *pte;
+
+ do {
+ pte = (pte_t *) __get_free_page(GFP_KERNEL);
+ if (pte)
+ clear_page(pte);
+ else {
+ current->state = TASK_UNINTERRUPTIBLE;
+ schedule_timeout(HZ);
+ }
+ } while (!pte && (count++ < 10));
+ return pte;
+}
+
+struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+ int count = 0;
+ struct page *pte;
+
+ do {
+#if CONFIG_HIGHPTE
+ pte = alloc_pages(GFP_KERNEL | __GFP_HIGHMEM, 0);
+#else
+ pte = alloc_pages(GFP_KERNEL, 0);
+#endif
+ if (pte)
+ clear_highpage(pte);
+ else {
+ current->state = TASK_UNINTERRUPTIBLE;
+ schedule_timeout(HZ);
+ }
+ } while (!pte && (count++ < 10));
+ return pte;
+}
diff -Nru a/arch/i386/mm/ioremap.c b/arch/i386/mm/ioremap.c
--- a/arch/i386/mm/ioremap.c Thu Mar 28 09:52:12 2002
+++ b/arch/i386/mm/ioremap.c Thu Mar 28 09:52:12 2002
@@ -11,6 +11,9 @@
#include <linux/vmalloc.h>
#include <asm/io.h>
#include <asm/pgalloc.h>
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
+
static inline void remap_area_pte(pte_t * pte, unsigned long address, unsigned long size,
unsigned long phys_addr, unsigned long flags)
diff -Nru a/fs/binfmt_aout.c b/fs/binfmt_aout.c
--- a/fs/binfmt_aout.c Thu Mar 28 09:52:12 2002
+++ b/fs/binfmt_aout.c Thu Mar 28 09:52:12 2002
@@ -28,6 +28,7 @@
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
+#include <asm/cacheflush.h>
static int load_aout_binary(struct linux_binprm *, struct pt_regs * regs);
static int load_aout_library(struct file*);
diff -Nru a/include/asm-alpha/cacheflush.h b/include/asm-alpha/cacheflush.h
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/include/asm-alpha/cacheflush.h Thu Mar 28 09:52:12 2002
@@ -0,0 +1,64 @@
+#ifndef _ALPHA_CACHEFLUSH_H
+#define _ALPHA_CACHEFLUSH_H
+
+#include <linux/config.h>
+#include <linux/mm.h>
+
+/* Caches aren't brain-dead on the Alpha. */
+#define flush_cache_all() do { } while (0)
+#define flush_cache_mm(mm) do { } while (0)
+#define flush_cache_range(vma, start, end) do { } while (0)
+#define flush_cache_page(vma, vmaddr) do { } while (0)
+#define flush_page_to_ram(page) do { } while (0)
+#define flush_dcache_page(page) do { } while (0)
+
+/* Note that the following two definitions are _highly_ dependent
+ on the contexts in which they are used in the kernel. I personally
+ think it is criminal how loosely defined these macros are. */
+
+/* We need to flush the kernel's icache after loading modules. The
+ only other use of this macro is in load_aout_interp which is not
+ used on Alpha.
+
+ Note that this definition should *not* be used for userspace
+ icache flushing. While functional, it is _way_ overkill. The
+ icache is tagged with ASNs and it suffices to allocate a new ASN
+ for the process. */
+#ifndef CONFIG_SMP
+#define flush_icache_range(start, end) imb()
+#else
+#define flush_icache_range(start, end) smp_imb()
+extern void smp_imb(void);
+#endif
+
+/* We need to flush the userspace icache after setting breakpoints in
+ ptrace.
+
+ Instead of indiscriminately using imb, take advantage of the fact
+ that icache entries are tagged with the ASN and load a new mm context. */
+/* ??? Ought to use this in arch/alpha/kernel/signal.c too. */
+
+#ifndef CONFIG_SMP
+extern void __load_new_mm_context(struct mm_struct *);
+static inline void
+flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
+ unsigned long addr, int len)
+{
+ if (vma->vm_flags & VM_EXEC) {
+ struct mm_struct *mm = vma->vm_mm;
+ if (current->active_mm == mm)
+ __load_new_mm_context(mm);
+ else
+ mm->context[smp_processor_id()] = 0;
+ }
+}
+#else
+extern void flush_icache_user_range(struct vm_area_struct *vma,
+ struct page *page, unsigned long addr, int len);
+#endif
+
+/* This is used only in do_no_page and do_swap_page. */
+#define flush_icache_page(vma, page) \
+ flush_icache_user_range((vma), (page), 0, 0)
+
+#endif /* _ALPHA_CACHEFLUSH_H */
diff -Nru a/include/asm-alpha/pgalloc.h b/include/asm-alpha/pgalloc.h
--- a/include/asm-alpha/pgalloc.h Thu Mar 28 09:52:11 2002
+++ b/include/asm-alpha/pgalloc.h Thu Mar 28 09:52:11 2002
@@ -3,228 +3,6 @@
#include <linux/config.h>
-#ifndef __EXTERN_INLINE
-#define __EXTERN_INLINE extern inline
-#define __MMU_EXTERN_INLINE
-#endif
-
-extern void __load_new_mm_context(struct mm_struct *);
-
-
-/* Caches aren't brain-dead on the Alpha. */
-#define flush_cache_all() do { } while (0)
-#define flush_cache_mm(mm) do { } while (0)
-#define flush_cache_range(vma, start, end) do { } while (0)
-#define flush_cache_page(vma, vmaddr) do { } while (0)
-#define flush_page_to_ram(page) do { } while (0)
-#define flush_dcache_page(page) do { } while (0)
-
-/* Note that the following two definitions are _highly_ dependent
- on the contexts in which they are used in the kernel. I personally
- think it is criminal how loosely defined these macros are. */
-
-/* We need to flush the kernel's icache after loading modules. The
- only other use of this macro is in load_aout_interp which is not
- used on Alpha.
-
- Note that this definition should *not* be used for userspace
- icache flushing. While functional, it is _way_ overkill. The
- icache is tagged with ASNs and it suffices to allocate a new ASN
- for the process. */
-#ifndef CONFIG_SMP
-#define flush_icache_range(start, end) imb()
-#else
-#define flush_icache_range(start, end) smp_imb()
-extern void smp_imb(void);
-#endif
-
-
-/*
- * Use a few helper functions to hide the ugly broken ASN
- * numbers on early Alphas (ev4 and ev45)
- */
-
-__EXTERN_INLINE void
-ev4_flush_tlb_current(struct mm_struct *mm)
-{
- __load_new_mm_context(mm);
- tbiap();
-}
-
-__EXTERN_INLINE void
-ev5_flush_tlb_current(struct mm_struct *mm)
-{
- __load_new_mm_context(mm);
-}
-
-static inline void
-flush_tlb_other(struct mm_struct *mm)
-{
- long * mmc = &mm->context[smp_processor_id()];
- /*
- * Check it's not zero first to avoid cacheline ping pong when
- * possible.
- */
- if (*mmc)
- *mmc = 0;
-}
-
-/* We need to flush the userspace icache after setting breakpoints in
- ptrace.
-
- Instead of indiscriminately using imb, take advantage of the fact
- that icache entries are tagged with the ASN and load a new mm context. */
-/* ??? Ought to use this in arch/alpha/kernel/signal.c too. */
-
-#ifndef CONFIG_SMP
-static inline void
-flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
- unsigned long addr, int len)
-{
- if (vma->vm_flags & VM_EXEC) {
- struct mm_struct *mm = vma->vm_mm;
- if (current->active_mm == mm)
- __load_new_mm_context(mm);
- else
- mm->context[smp_processor_id()] = 0;
- }
-}
-#else
-extern void flush_icache_user_range(struct vm_area_struct *vma,
- struct page *page, unsigned long addr, int len);
-#endif
-
-/* this is used only in do_no_page and do_swap_page */
-#define flush_icache_page(vma, page) flush_icache_user_range((vma), (page), 0, 0)
-
-/*
- * Flush just one page in the current TLB set.
- * We need to be very careful about the icache here, there
- * is no way to invalidate a specific icache page..
- */
-
-__EXTERN_INLINE void
-ev4_flush_tlb_current_page(struct mm_struct * mm,
- struct vm_area_struct *vma,
- unsigned long addr)
-{
- int tbi_flag = 2;
- if (vma->vm_flags & VM_EXEC) {
- __load_new_mm_context(mm);
- tbi_flag = 3;
- }
- tbi(tbi_flag, addr);
-}
-
-__EXTERN_INLINE void
-ev5_flush_tlb_current_page(struct mm_struct * mm,
- struct vm_area_struct *vma,
- unsigned long addr)
-{
- if (vma->vm_flags & VM_EXEC)
- __load_new_mm_context(mm);
- else
- tbi(2, addr);
-}
-
-
-#ifdef CONFIG_ALPHA_GENERIC
-# define flush_tlb_current alpha_mv.mv_flush_tlb_current
-# define flush_tlb_current_page alpha_mv.mv_flush_tlb_current_page
-#else
-# ifdef CONFIG_ALPHA_EV4
-# define flush_tlb_current ev4_flush_tlb_current
-# define flush_tlb_current_page ev4_flush_tlb_current_page
-# else
-# define flush_tlb_current ev5_flush_tlb_current
-# define flush_tlb_current_page ev5_flush_tlb_current_page
-# endif
-#endif
-
-#ifdef __MMU_EXTERN_INLINE
-#undef __EXTERN_INLINE
-#undef __MMU_EXTERN_INLINE
-#endif
-
-/*
- * Flush current user mapping.
- */
-static inline void flush_tlb(void)
-{
- flush_tlb_current(current->active_mm);
-}
-
-/*
- * Flush a specified range of user mapping page tables
- * from TLB.
- * Although Alpha uses VPTE caches, this can be a nop, as Alpha does
- * not have finegrained tlb flushing, so it will flush VPTE stuff
- * during next flush_tlb_range.
- */
-static inline void flush_tlb_pgtables(struct mm_struct *mm,
- unsigned long start, unsigned long end)
-{
-}
-
-#ifndef CONFIG_SMP
-/*
- * Flush everything (kernel mapping may also have
- * changed due to vmalloc/vfree)
- */
-static inline void flush_tlb_all(void)
-{
- tbia();
-}
-
-/*
- * Flush a specified user mapping
- */
-static inline void flush_tlb_mm(struct mm_struct *mm)
-{
- if (mm == current->active_mm)
- flush_tlb_current(mm);
- else
- flush_tlb_other(mm);
-}
-
-/*
- * Page-granular tlb flush.
- *
- * do a tbisd (type = 2) normally, and a tbis (type = 3)
- * if it is an executable mapping. We want to avoid the
- * itlb flush, because that potentially also does a
- * icache flush.
- */
-static inline void flush_tlb_page(struct vm_area_struct *vma,
- unsigned long addr)
-{
- struct mm_struct * mm = vma->vm_mm;
-
- if (mm == current->active_mm)
- flush_tlb_current_page(mm, vma, addr);
- else
- flush_tlb_other(mm);
-}
-
-/*
- * Flush a specified range of user mapping: on the
- * Alpha we flush the whole user tlb.
- */
-static inline void flush_tlb_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- flush_tlb_mm(vma->vm_mm);
-}
-
-#else /* CONFIG_SMP */
-
-extern void flush_tlb_all(void);
-extern void flush_tlb_mm(struct mm_struct *);
-extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
-extern void flush_tlb_range(struct vm_area_struct *, unsigned long, unsigned long);
-
-#endif /* CONFIG_SMP */
-
/*
* Allocate and free page tables. The xxx_kernel() versions are
* used to allocate a kernel page table - this turns on ASN bits
@@ -291,5 +69,7 @@
{
__free_page(page);
}
+
+#define check_pgt_cache() do { } while (0)
#endif /* _ALPHA_PGALLOC_H */
diff -Nru a/include/asm-alpha/tlbflush.h b/include/asm-alpha/tlbflush.h
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/include/asm-alpha/tlbflush.h Thu Mar 28 09:52:12 2002
@@ -0,0 +1,155 @@
+#ifndef _ALPHA_TLBFLUSH_H
+#define _ALPHA_TLBFLUSH_H
+
+#include <linux/config.h>
+#include <linux/mm.h>
+
+#ifndef __EXTERN_INLINE
+#define __EXTERN_INLINE extern inline
+#define __MMU_EXTERN_INLINE
+#endif
+
+extern void __load_new_mm_context(struct mm_struct *);
+
+
+/* Use a few helper functions to hide the ugly broken ASN
+ numbers on early Alphas (ev4 and ev45). */
+
+__EXTERN_INLINE void
+ev4_flush_tlb_current(struct mm_struct *mm)
+{
+ __load_new_mm_context(mm);
+ tbiap();
+}
+
+__EXTERN_INLINE void
+ev5_flush_tlb_current(struct mm_struct *mm)
+{
+ __load_new_mm_context(mm);
+}
+
+/* Flush just one page in the current TLB set. We need to be very
+ careful about the icache here, there is no way to invalidate a
+ specific icache page. */
+
+__EXTERN_INLINE void
+ev4_flush_tlb_current_page(struct mm_struct * mm,
+ struct vm_area_struct *vma,
+ unsigned long addr)
+{
+ int tbi_flag = 2;
+ if (vma->vm_flags & VM_EXEC) {
+ __load_new_mm_context(mm);
+ tbi_flag = 3;
+ }
+ tbi(tbi_flag, addr);
+}
+
+__EXTERN_INLINE void
+ev5_flush_tlb_current_page(struct mm_struct * mm,
+ struct vm_area_struct *vma,
+ unsigned long addr)
+{
+ if (vma->vm_flags & VM_EXEC)
+ __load_new_mm_context(mm);
+ else
+ tbi(2, addr);
+}
+
+
+#ifdef CONFIG_ALPHA_GENERIC
+# define flush_tlb_current alpha_mv.mv_flush_tlb_current
+# define flush_tlb_current_page alpha_mv.mv_flush_tlb_current_page
+#else
+# ifdef CONFIG_ALPHA_EV4
+# define flush_tlb_current ev4_flush_tlb_current
+# define flush_tlb_current_page ev4_flush_tlb_current_page
+# else
+# define flush_tlb_current ev5_flush_tlb_current
+# define flush_tlb_current_page ev5_flush_tlb_current_page
+# endif
+#endif
+
+#ifdef __MMU_EXTERN_INLINE
+#undef __EXTERN_INLINE
+#undef __MMU_EXTERN_INLINE
+#endif
+
+/* Flush current user mapping. */
+static inline void
+flush_tlb(void)
+{
+ flush_tlb_current(current->active_mm);
+}
+
+/* Flush someone else's user mapping. */
+static inline void
+flush_tlb_other(struct mm_struct *mm)
+{
+ long *mmc = &mm->context[smp_processor_id()];
+ /* Check it's not zero first to avoid cacheline ping pong
+ when possible. */
+ if (*mmc) *mmc = 0;
+}
+
+/* Flush a specified range of user mapping page tables from TLB.
+ Although Alpha uses VPTE caches, this can be a nop, as Alpha does
+ not have finegrained tlb flushing, so it will flush VPTE stuff
+ during next flush_tlb_range. */
+
+static inline void
+flush_tlb_pgtables(struct mm_struct *mm, unsigned long start,
+ unsigned long end)
+{
+}
+
+#ifndef CONFIG_SMP
+/* Flush everything (kernel mapping may also have changed
+ due to vmalloc/vfree). */
+static inline void flush_tlb_all(void)
+{
+ tbia();
+}
+
+/* Flush a specified user mapping. */
+static inline void
+flush_tlb_mm(struct mm_struct *mm)
+{
+ if (mm == current->active_mm)
+ flush_tlb_current(mm);
+ else
+ flush_tlb_other(mm);
+}
+
+/* Page-granular tlb flush. */
+static inline void
+flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
+{
+ struct mm_struct *mm = vma->vm_mm;
+
+ if (mm == current->active_mm)
+ flush_tlb_current_page(mm, vma, addr);
+ else
+ flush_tlb_other(mm);
+}
+
+/* Flush a specified range of user mapping. On the Alpha we flush
+ the whole user tlb. */
+static inline void
+flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+ unsigned long end)
+{
+ flush_tlb_mm(vma->vm_mm);
+}
+
+#else /* CONFIG_SMP */
+
+extern void flush_tlb_all(void);
+extern void flush_tlb_mm(struct mm_struct *);
+extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
+extern void flush_tlb_range(struct vm_area_struct *, unsigned long,
+ unsigned long);
+
+#endif /* CONFIG_SMP */
+
+#endif /* _ALPHA_TLBFLUSH_H */
diff -Nru a/include/asm-i386/cacheflush.h b/include/asm-i386/cacheflush.h
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/include/asm-i386/cacheflush.h Thu Mar 28 09:52:12 2002
@@ -0,0 +1,18 @@
+#ifndef _I386_CACHEFLUSH_H
+#define _I386_CACHEFLUSH_H
+
+/* Keep includes the same across arches. */
+#include <linux/mm.h>
+
+/* Caches aren't brain-dead on the intel. */
+#define flush_cache_all() do { } while (0)
+#define flush_cache_mm(mm) do { } while (0)
+#define flush_cache_range(vma, start, end) do { } while (0)
+#define flush_cache_page(vma, vmaddr) do { } while (0)
+#define flush_page_to_ram(page) do { } while (0)
+#define flush_dcache_page(page) do { } while (0)
+#define flush_icache_range(start, end) do { } while (0)
+#define flush_icache_page(vma,pg) do { } while (0)
+#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
+
+#endif /* _I386_CACHEFLUSH_H */
diff -Nru a/include/asm-i386/pgalloc.h b/include/asm-i386/pgalloc.h
--- a/include/asm-i386/pgalloc.h Thu Mar 28 09:52:12 2002
+++ b/include/asm-i386/pgalloc.h Thu Mar 28 09:52:12 2002
@@ -5,7 +5,6 @@
#include <asm/processor.h>
#include <asm/fixmap.h>
#include <linux/threads.h>
-#include <linux/highmem.h>
#define pmd_populate_kernel(mm, pmd, pte) \
set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
@@ -20,109 +19,11 @@
* Allocate and free page tables.
*/
-#if defined (CONFIG_X86_PAE)
-/*
- * We can't include <linux/slab.h> here, thus these uglinesses.
- */
-struct kmem_cache_s;
-
-extern struct kmem_cache_s *pae_pgd_cachep;
-extern void *kmem_cache_alloc(struct kmem_cache_s *, int);
-extern void kmem_cache_free(struct kmem_cache_s *, void *);
-
-
-static inline pgd_t *pgd_alloc(struct mm_struct *mm)
-{
- int i;
- pgd_t *pgd = kmem_cache_alloc(pae_pgd_cachep, GFP_KERNEL);
-
- if (pgd) {
- for (i = 0; i < USER_PTRS_PER_PGD; i++) {
- unsigned long pmd = __get_free_page(GFP_KERNEL);
- if (!pmd)
- goto out_oom;
- clear_page(pmd);
- set_pgd(pgd + i, __pgd(1 + __pa(pmd)));
- }
- memcpy(pgd + USER_PTRS_PER_PGD,
- swapper_pg_dir + USER_PTRS_PER_PGD,
- (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
- }
- return pgd;
-out_oom:
- for (i--; i >= 0; i--)
- free_page((unsigned long)__va(pgd_val(pgd[i])-1));
- kmem_cache_free(pae_pgd_cachep, pgd);
- return NULL;
-}
-
-#else
+extern pgd_t *pgd_alloc(struct mm_struct *);
+extern void pgd_free(pgd_t *pgd);
-static inline pgd_t *pgd_alloc(struct mm_struct *mm)
-{
- pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL);
-
- if (pgd) {
- memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
- memcpy(pgd + USER_PTRS_PER_PGD,
- swapper_pg_dir + USER_PTRS_PER_PGD,
- (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
- }
- return pgd;
-}
-
-#endif /* CONFIG_X86_PAE */
-
-static inline void pgd_free(pgd_t *pgd)
-{
-#if defined(CONFIG_X86_PAE)
- int i;
-
- for (i = 0; i < USER_PTRS_PER_PGD; i++)
- free_page((unsigned long)__va(pgd_val(pgd[i])-1));
- kmem_cache_free(pae_pgd_cachep, pgd);
-#else
- free_page((unsigned long)pgd);
-#endif
-}
-
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
-{
- int count = 0;
- pte_t *pte;
-
- do {
- pte = (pte_t *) __get_free_page(GFP_KERNEL);
- if (pte)
- clear_page(pte);
- else {
- current->state = TASK_UNINTERRUPTIBLE;
- schedule_timeout(HZ);
- }
- } while (!pte && (count++ < 10));
- return pte;
-}
-
-static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
- int count = 0;
- struct page *pte;
-
- do {
-#if CONFIG_HIGHPTE
- pte = alloc_pages(GFP_KERNEL | __GFP_HIGHMEM, 0);
-#else
- pte = alloc_pages(GFP_KERNEL, 0);
-#endif
- if (pte)
- clear_highpage(pte);
- else {
- current->state = TASK_UNINTERRUPTIBLE;
- schedule_timeout(HZ);
- }
- } while (!pte && (count++ < 10));
- return pte;
-}
+extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
+extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
static inline void pte_free_kernel(pte_t *pte)
{
@@ -143,85 +44,6 @@
#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(x) do { } while (0)
#define pgd_populate(mm, pmd, pte) BUG()
-
-/*
- * TLB flushing:
- *
- * - flush_tlb() flushes the current mm struct TLBs
- * - flush_tlb_all() flushes all processes TLBs
- * - flush_tlb_mm(mm) flushes the specified mm context TLB's
- * - flush_tlb_page(vma, vmaddr) flushes one page
- * - flush_tlb_range(vma, start, end) flushes a range of pages
- * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
- *
- * ..but the i386 has somewhat limited tlb flushing capabilities,
- * and page-granular flushes are available only on i486 and up.
- */
-
-#ifndef CONFIG_SMP
-
-#define flush_tlb() __flush_tlb()
-#define flush_tlb_all() __flush_tlb_all()
-#define local_flush_tlb() __flush_tlb()
-
-static inline void flush_tlb_mm(struct mm_struct *mm)
-{
- if (mm == current->active_mm)
- __flush_tlb();
-}
-
-static inline void flush_tlb_page(struct vm_area_struct *vma,
- unsigned long addr)
-{
- if (vma->vm_mm == current->active_mm)
- __flush_tlb_one(addr);
-}
-
-static inline void flush_tlb_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- if (vma->vm_mm == current->active_mm)
- __flush_tlb();
-}
-
-#else
-
-#include <asm/smp.h>
-
-#define local_flush_tlb() \
- __flush_tlb()
-
-extern void flush_tlb_all(void);
-extern void flush_tlb_current_task(void);
-extern void flush_tlb_mm(struct mm_struct *);
-extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
-
-#define flush_tlb() flush_tlb_current_task()
-
-static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long start, unsigned long end)
-{
- flush_tlb_mm(vma->vm_mm);
-}
-
-#define TLBSTATE_OK 1
-#define TLBSTATE_LAZY 2
-
-struct tlb_state
-{
- struct mm_struct *active_mm;
- int state;
- char __cacheline_padding[24];
-};
-extern struct tlb_state cpu_tlbstate[NR_CPUS];
-
-
-#endif
-
-static inline void flush_tlb_pgtables(struct mm_struct *mm,
- unsigned long start, unsigned long end)
-{
- /* i386 does not keep any page table caches in TLB */
-}
#define check_pgt_cache() do { } while (0)
diff -Nru a/include/asm-i386/pgtable.h b/include/asm-i386/pgtable.h
--- a/include/asm-i386/pgtable.h Thu Mar 28 09:52:12 2002
+++ b/include/asm-i386/pgtable.h Thu Mar 28 09:52:12 2002
@@ -24,71 +24,6 @@
extern pgd_t swapper_pg_dir[1024];
extern void paging_init(void);
-/* Caches aren't brain-dead on the intel. */
-#define flush_cache_all() do { } while (0)
-#define flush_cache_mm(mm) do { } while (0)
-#define flush_cache_range(vma, start, end) do { } while (0)
-#define flush_cache_page(vma, vmaddr) do { } while (0)
-#define flush_page_to_ram(page) do { } while (0)
-#define flush_dcache_page(page) do { } while (0)
-#define flush_icache_range(start, end) do { } while (0)
-#define flush_icache_page(vma,pg) do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
-
-#define __flush_tlb() \
- do { \
- unsigned int tmpreg; \
- \
- __asm__ __volatile__( \
- "movl %%cr3, %0; # flush TLB \n" \
- "movl %0, %%cr3; \n" \
- : "=r" (tmpreg) \
- :: "memory"); \
- } while (0)
-
-/*
- * Global pages have to be flushed a bit differently. Not a real
- * performance problem because this does not happen often.
- */
-#define __flush_tlb_global() \
- do { \
- unsigned int tmpreg; \
- \
- __asm__ __volatile__( \
- "movl %1, %%cr4; # turn off PGE \n" \
- "movl %%cr3, %0; # flush TLB \n" \
- "movl %0, %%cr3; \n" \
- "movl %2, %%cr4; # turn PGE back on \n" \
- : "=&r" (tmpreg) \
- : "r" (mmu_cr4_features & ~X86_CR4_PGE), \
- "r" (mmu_cr4_features) \
- : "memory"); \
- } while (0)
-
-extern unsigned long pgkern_mask;
-
-/*
- * Do not check the PGE bit unnecesserily if this is a PPro+ kernel.
- */
-#ifdef CONFIG_X86_PGE
-# define __flush_tlb_all() __flush_tlb_global()
-#else
-# define __flush_tlb_all() \
- do { \
- if (cpu_has_pge) \
- __flush_tlb_global(); \
- else \
- __flush_tlb(); \
- } while (0)
-#endif
-
-#ifndef CONFIG_X86_INVLPG
-#define __flush_tlb_one(addr) __flush_tlb()
-#else
-#define __flush_tlb_one(addr) \
-__asm__ __volatile__("invlpg %0": :"m" (*(char *) addr))
-#endif
-
/*
* ZERO_PAGE is a global shared page that is always zero: used
* for zero-mapped memory areas etc..
diff -Nru a/include/asm-i386/tlbflush.h b/include/asm-i386/tlbflush.h
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/include/asm-i386/tlbflush.h Thu Mar 28 09:52:12 2002
@@ -0,0 +1,141 @@
+#ifndef _I386_TLBFLUSH_H
+#define _I386_TLBFLUSH_H
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <asm/processor.h>
+
+#define __flush_tlb() \
+ do { \
+ unsigned int tmpreg; \
+ \
+ __asm__ __volatile__( \
+ "movl %%cr3, %0; # flush TLB \n" \
+ "movl %0, %%cr3; \n" \
+ : "=r" (tmpreg) \
+ :: "memory"); \
+ } while (0)
+
+/*
+ * Global pages have to be flushed a bit differently. Not a real
+ * performance problem because this does not happen often.
+ */
+#define __flush_tlb_global() \
+ do { \
+ unsigned int tmpreg; \
+ \
+ __asm__ __volatile__( \
+ "movl %1, %%cr4; # turn off PGE \n" \
+ "movl %%cr3, %0; # flush TLB \n" \
+ "movl %0, %%cr3; \n" \
+ "movl %2, %%cr4; # turn PGE back on \n" \
+ : "=&r" (tmpreg) \
+ : "r" (mmu_cr4_features & ~X86_CR4_PGE), \
+ "r" (mmu_cr4_features) \
+ : "memory"); \
+ } while (0)
+
+extern unsigned long pgkern_mask;
+
+/*
+ * Do not check the PGE bit unnecesserily if this is a PPro+ kernel.
+ */
+#ifdef CONFIG_X86_PGE
+# define __flush_tlb_all() __flush_tlb_global()
+#else
+# define __flush_tlb_all() \
+ do { \
+ if (cpu_has_pge) \
+ __flush_tlb_global(); \
+ else \
+ __flush_tlb(); \
+ } while (0)
+#endif
+
+#ifndef CONFIG_X86_INVLPG
+#define __flush_tlb_one(addr) __flush_tlb()
+#else
+#define __flush_tlb_one(addr) \
+__asm__ __volatile__("invlpg %0": :"m" (*(char *) addr))
+#endif
+
+/*
+ * TLB flushing:
+ *
+ * - flush_tlb() flushes the current mm struct TLBs
+ * - flush_tlb_all() flushes all processes TLBs
+ * - flush_tlb_mm(mm) flushes the specified mm context TLB's
+ * - flush_tlb_page(vma, vmaddr) flushes one page
+ * - flush_tlb_range(vma, start, end) flushes a range of pages
+ * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
+ *
+ * ..but the i386 has somewhat limited tlb flushing capabilities,
+ * and page-granular flushes are available only on i486 and up.
+ */
+
+#ifndef CONFIG_SMP
+
+#define flush_tlb() __flush_tlb()
+#define flush_tlb_all() __flush_tlb_all()
+#define local_flush_tlb() __flush_tlb()
+
+static inline void flush_tlb_mm(struct mm_struct *mm)
+{
+ if (mm == current->active_mm)
+ __flush_tlb();
+}
+
+static inline void flush_tlb_page(struct vm_area_struct *vma,
+ unsigned long addr)
+{
+ if (vma->vm_mm == current->active_mm)
+ __flush_tlb_one(addr);
+}
+
+static inline void flush_tlb_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end)
+{
+ if (vma->vm_mm == current->active_mm)
+ __flush_tlb();
+}
+
+#else
+
+#include <asm/smp.h>
+
+#define local_flush_tlb() \
+ __flush_tlb()
+
+extern void flush_tlb_all(void);
+extern void flush_tlb_current_task(void);
+extern void flush_tlb_mm(struct mm_struct *);
+extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
+
+#define flush_tlb() flush_tlb_current_task()
+
+static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long start, unsigned long end)
+{
+ flush_tlb_mm(vma->vm_mm);
+}
+
+#define TLBSTATE_OK 1
+#define TLBSTATE_LAZY 2
+
+struct tlb_state
+{
+ struct mm_struct *active_mm;
+ int state;
+ char __cacheline_padding[24];
+};
+extern struct tlb_state cpu_tlbstate[NR_CPUS];
+
+
+#endif
+
+static inline void flush_tlb_pgtables(struct mm_struct *mm,
+ unsigned long start, unsigned long end)
+{
+ /* i386 does not keep any page table caches in TLB */
+}
+
+#endif /* _I386_TLBFLUSH_H */
diff -Nru a/include/linux/highmem.h b/include/linux/highmem.h
--- a/include/linux/highmem.h Thu Mar 28 09:52:12 2002
+++ b/include/linux/highmem.h Thu Mar 28 09:52:12 2002
@@ -4,6 +4,7 @@
#include <linux/config.h>
#include <linux/bio.h>
#include <linux/fs.h>
+#include <asm/cacheflush.h>
#ifdef CONFIG_HIGHMEM
diff -Nru a/kernel/fork.c b/kernel/fork.c
--- a/kernel/fork.c Thu Mar 28 09:52:12 2002
+++ b/kernel/fork.c Thu Mar 28 09:52:12 2002
@@ -29,6 +29,8 @@
#include <asm/pgalloc.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
static kmem_cache_t *task_struct_cachep;
diff -Nru a/kernel/module.c b/kernel/module.c
--- a/kernel/module.c Thu Mar 28 09:52:12 2002
+++ b/kernel/module.c Thu Mar 28 09:52:12 2002
@@ -11,6 +11,7 @@
#include <linux/kmod.h>
#include <linux/seq_file.h>
#include <linux/fs.h>
+#include <asm/cacheflush.h>
/*
* Originally by Anonymous (as far as I know...)
diff -Nru a/mm/memory.c b/mm/memory.c
--- a/mm/memory.c Thu Mar 28 09:52:12 2002
+++ b/mm/memory.c Thu Mar 28 09:52:12 2002
@@ -48,6 +48,7 @@
#include <asm/pgalloc.h>
#include <asm/uaccess.h>
#include <asm/tlb.h>
+#include <asm/tlbflush.h>
unsigned long max_mapnr;
unsigned long num_physpages;
diff -Nru a/mm/mmap.c b/mm/mmap.c
--- a/mm/mmap.c Thu Mar 28 09:52:12 2002
+++ b/mm/mmap.c Thu Mar 28 09:52:12 2002
@@ -17,6 +17,7 @@
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
+#include <asm/tlbflush.h>
/*
* WARNING: the debugging will use recursive algorithms so never enable this
diff -Nru a/mm/mprotect.c b/mm/mprotect.c
--- a/mm/mprotect.c Thu Mar 28 09:52:12 2002
+++ b/mm/mprotect.c Thu Mar 28 09:52:12 2002
@@ -9,11 +9,13 @@
#include <linux/shm.h>
#include <linux/mman.h>
#include <linux/fs.h>
+#include <linux/highmem.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
-#include <linux/highmem.h>
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
static inline void change_pte_range(pmd_t * pmd, unsigned long address,
unsigned long size, pgprot_t newprot)
diff -Nru a/mm/mremap.c b/mm/mremap.c
--- a/mm/mremap.c Thu Mar 28 09:52:12 2002
+++ b/mm/mremap.c Thu Mar 28 09:52:12 2002
@@ -11,9 +11,12 @@
#include <linux/mman.h>
#include <linux/swap.h>
#include <linux/fs.h>
+#include <linux/highmem.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
extern int vm_enough_memory(long pages);
diff -Nru a/mm/msync.c b/mm/msync.c
--- a/mm/msync.c Thu Mar 28 09:52:12 2002
+++ b/mm/msync.c Thu Mar 28 09:52:12 2002
@@ -14,6 +14,7 @@
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
+#include <asm/tlbflush.h>
/*
* Called with mm->page_table_lock held to protect against other
diff -Nru a/mm/vmalloc.c b/mm/vmalloc.c
--- a/mm/vmalloc.c Thu Mar 28 09:52:12 2002
+++ b/mm/vmalloc.c Thu Mar 28 09:52:12 2002
@@ -15,6 +15,7 @@
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
+#include <asm/tlbflush.h>
rwlock_t vmlist_lock = RW_LOCK_UNLOCKED;
struct vm_struct * vmlist;
diff -Nru a/mm/vmscan.c b/mm/vmscan.c
--- a/mm/vmscan.c Thu Mar 28 09:52:12 2002
+++ b/mm/vmscan.c Thu Mar 28 09:52:12 2002
@@ -24,6 +24,7 @@
#include <linux/compiler.h>
#include <asm/pgalloc.h>
+#include <asm/tlbflush.h>
/*
* The "priority" of VM scanning is how much of the queues we
prev parent reply other threads:[~2002-03-28 17:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-21 17:17 Chris Meadors
2002-03-28 17:53 ` Richard Henderson [this message]
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