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-rw-r--r--trampoline.S3
1 files changed, 3 insertions, 0 deletions
diff --git a/trampoline.S b/trampoline.S
index 5886942..dd4eb02 100644
--- a/trampoline.S
+++ b/trampoline.S
@@ -120,6 +120,9 @@ trampin:
# restore kernel stack pointer from p->tf->kernel_sp
ld sp, 8(a0)
+ # make tp hold the current hartid, from p->tf->hartid
+ ld tp, 32(a0)
+
# remember the address of usertrap(), p->tf->kernel_trap
ld t0, 16(a0)