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| author | Frans Kaashoek <kaashoek@mit.edu> | 2017-02-01 18:04:13 -0500 |
|---|---|---|
| committer | Frans Kaashoek <kaashoek@mit.edu> | 2017-02-01 18:04:13 -0500 |
| commit | ed396c068b881877330f7d40bfce02db9b1199b3 (patch) | |
| tree | 69103a78128b46d6bae179b0440cca0a9c7f0b0c /mmu.h | |
| parent | fbb4c0944422f860484142010bb9f366f3e87bf8 (diff) | |
| download | xv6-labs-ed396c068b881877330f7d40bfce02db9b1199b3.tar.gz xv6-labs-ed396c068b881877330f7d40bfce02db9b1199b3.tar.bz2 xv6-labs-ed396c068b881877330f7d40bfce02db9b1199b3.zip | |
Eliminate code for gs trick to track per-cpu state. We rely on lapiccpunum()
to find a per-cpu id with which we locate a cpu's cpu struct.
Diffstat (limited to 'mmu.h')
| -rw-r--r-- | mmu.h | 9 |
1 files changed, 4 insertions, 5 deletions
@@ -42,13 +42,12 @@ // various segment selectors. #define SEG_KCODE 1 // kernel code #define SEG_KDATA 2 // kernel data+stack -#define SEG_KCPU 3 // kernel per-cpu data -#define SEG_UCODE 4 // user code -#define SEG_UDATA 5 // user data+stack -#define SEG_TSS 6 // this process's task state +#define SEG_UCODE 3 // user code +#define SEG_UDATA 4 // user data+stack +#define SEG_TSS 5 // this process's task state // cpu->gdt[NSEGS] holds the above segments. -#define NSEGS 7 +#define NSEGS 6 //PAGEBREAK! #ifndef __ASSEMBLER__ |