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| author | Robert Morris <[email protected]> | 2016-08-10 10:51:14 -0400 |
|---|---|---|
| committer | Robert Morris <[email protected]> | 2016-08-10 10:51:14 -0400 |
| commit | 858475e4dfabb61dc72ab5b4f105e2a0a636e7e8 (patch) | |
| tree | 16f960cc7005744d73e50bb55d2eecb8f080dafa /vm.c | |
| parent | 0a4a4230a32696ef7f1f6272ca24520826195b7f (diff) | |
| download | xv6-labs-858475e4dfabb61dc72ab5b4f105e2a0a636e7e8.tar.gz xv6-labs-858475e4dfabb61dc72ab5b4f105e2a0a636e7e8.tar.bz2 xv6-labs-858475e4dfabb61dc72ab5b4f105e2a0a636e7e8.zip | |
tiny clarifications to some gdt code.
Diffstat (limited to 'vm.c')
| -rw-r--r-- | vm.c | 3 |
1 files changed, 1 insertions, 2 deletions
@@ -9,7 +9,6 @@ extern char data[]; // defined by kernel.ld pde_t *kpgdir; // for use in scheduler() -struct segdesc gdt[NSEGS]; // Set up CPU's kernel segment descriptors. // Run once on entry on each CPU. @@ -28,7 +27,7 @@ seginit(void) c->gdt[SEG_UCODE] = SEG(STA_X|STA_R, 0, 0xffffffff, DPL_USER); c->gdt[SEG_UDATA] = SEG(STA_W, 0, 0xffffffff, DPL_USER); - // Map cpu, and curproc + // Map cpu and curproc -- these are private per cpu. c->gdt[SEG_KCPU] = SEG(STA_W, &c->cpu, 8, 0); lgdt(c->gdt, sizeof(c->gdt)); |