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!
diff --git a/arch/um/kernel/skas/tlb.c b/arch/um/kernel/skas/tlb.c
new file mode 100644
index 0000000..b8c5e71
--- /dev/null
+++ b/arch/um/kernel/skas/tlb.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright 2003 PathScale, Inc.
+ * Licensed under the GPL
+ */
+
+#include "linux/stddef.h"
+#include "linux/sched.h"
+#include "linux/mm.h"
+#include "asm/page.h"
+#include "asm/pgtable.h"
+#include "asm/mmu.h"
+#include "user_util.h"
+#include "mem_user.h"
+#include "mem.h"
+#include "skas.h"
+#include "os.h"
+#include "tlb.h"
+
+static void do_ops(int fd, struct host_vm_op *ops, int last)
+{
+ struct host_vm_op *op;
+ int i;
+
+ for(i = 0; i <= last; i++){
+ op = &ops[i];
+ switch(op->type){
+ case MMAP:
+ map(fd, op->u.mmap.addr, op->u.mmap.len,
+ op->u.mmap.r, op->u.mmap.w, op->u.mmap.x,
+ op->u.mmap.fd, op->u.mmap.offset);
+ break;
+ case MUNMAP:
+ unmap(fd, (void *) op->u.munmap.addr,
+ op->u.munmap.len);
+ break;
+ case MPROTECT:
+ protect(fd, op->u.mprotect.addr, op->u.mprotect.len,
+ op->u.mprotect.r, op->u.mprotect.w,
+ op->u.mprotect.x);
+ break;
+ default:
+ printk("Unknown op type %d in do_ops\n", op->type);
+ break;
+ }
+ }
+}
+
+static void fix_range(struct mm_struct *mm, unsigned long start_addr,
+ unsigned long end_addr, int force)
+{
+ int fd = mm->context.skas.mm_fd;
+
+ fix_range_common(mm, start_addr, end_addr, force, fd, do_ops);
+}
+
+void __flush_tlb_one_skas(unsigned long addr)
+{
+ flush_tlb_kernel_range_common(addr, addr + PAGE_SIZE);
+}
+
+void flush_tlb_range_skas(struct vm_area_struct *vma, unsigned long start,
+ unsigned long end)
+{
+ if(vma->vm_mm == NULL)
+ flush_tlb_kernel_range_common(start, end);
+ else fix_range(vma->vm_mm, start, end, 0);
+}
+
+void flush_tlb_mm_skas(struct mm_struct *mm)
+{
+ /* Don't bother flushing if this address space is about to be
+ * destroyed.
+ */
+ if(atomic_read(&mm->mm_users) == 0)
+ return;
+
+ fix_range(mm, 0, host_task_size, 0);
+ flush_tlb_kernel_range_common(start_vm, end_vm);
+}
+
+void force_flush_all_skas(void)
+{
+ fix_range(current->mm, 0, host_task_size, 1);
+}