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| author | Robert Morris <[email protected]> | 2019-07-23 12:17:17 -0400 |
|---|---|---|
| committer | Robert Morris <[email protected]> | 2019-07-23 12:17:17 -0400 |
| commit | 54178ad94d758e557bfa369b7f137e2844e030e1 (patch) | |
| tree | cc2446a7d55d35e30f12f26e44aef68d285bfc91 /kernel/memlayout.h | |
| parent | 55bc96d4190e40704fb5e447cef9597b08b8f088 (diff) | |
| download | xv6-labs-54178ad94d758e557bfa369b7f137e2844e030e1.tar.gz xv6-labs-54178ad94d758e557bfa369b7f137e2844e030e1.tar.bz2 xv6-labs-54178ad94d758e557bfa369b7f137e2844e030e1.zip | |
simplify kernel mapping calls
Diffstat (limited to 'kernel/memlayout.h')
| -rw-r--r-- | kernel/memlayout.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/memlayout.h b/kernel/memlayout.h index c15e398..ace0464 100644 --- a/kernel/memlayout.h +++ b/kernel/memlayout.h @@ -53,6 +53,9 @@ // map the trampoline page to the highest address, // in both user and kernel space. #define TRAMPOLINE (MAXVA - PGSIZE) + +// map kernel stacks beneath the trampoline, +// each surrounded by invalid guard pages. #define KSTACK(p) (TRAMPOLINE - ((p)+1)* 2*PGSIZE) // User memory layout. |