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| author | Robert Morris <[email protected]> | 2022-10-04 11:52:57 -0400 |
|---|---|---|
| committer | Robert Morris <[email protected]> | 2022-10-04 11:52:57 -0400 |
| commit | d2b2dff7490f2c4b8e91f79940fc46f0361c216c (patch) | |
| tree | 2db70a0e68469411a5b2cb007e8ec65f67790439 /kernel/trampoline.S | |
| parent | 989e8f2f1f5bd68731472874bed19fab48a202af (diff) | |
| download | xv6-labs-d2b2dff7490f2c4b8e91f79940fc46f0361c216c.tar.gz xv6-labs-d2b2dff7490f2c4b8e91f79940fc46f0361c216c.tar.bz2 xv6-labs-d2b2dff7490f2c4b8e91f79940fc46f0361c216c.zip | |
fix copyout() to refuse to write a read-only page
Diffstat (limited to 'kernel/trampoline.S')
| -rw-r--r-- | kernel/trampoline.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trampoline.S b/kernel/trampoline.S index d7308cc..693f8a1 100644 --- a/kernel/trampoline.S +++ b/kernel/trampoline.S @@ -15,6 +15,7 @@ .section trampsec .globl trampoline +.globl usertrap trampoline: .align 4 .globl uservec @@ -80,7 +81,6 @@ uservec: # load the address of usertrap(), from p->trapframe->kernel_trap ld t0, 16(a0) - # fetch the kernel page table address, from p->trapframe->kernel_satp. ld t1, 0(a0) |