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| author | Kimplul <kimi.h.kuparinen@gmail.com> | 2024-11-01 11:43:14 +0200 |
|---|---|---|
| committer | Kimplul <kimi.h.kuparinen@gmail.com> | 2024-11-01 12:47:57 +0200 |
| commit | 83ec75327c1ec35f25b6aee24f616a41858be539 (patch) | |
| tree | bd5c74baf3286beee930c7ba4b767c712b6afe6b /arch/riscv64 | |
| parent | 8100eef0826e7fb182434979a9b139716b3637e1 (diff) | |
| download | kmi-83ec75327c1ec35f25b6aee24f616a41858be539.tar.gz kmi-83ec75327c1ec35f25b6aee24f616a41858be539.zip | |
move stack modifications to be earlier in rpc
Diffstat (limited to 'arch/riscv64')
| -rw-r--r-- | arch/riscv64/kernel/vmem.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/riscv64/kernel/vmem.c b/arch/riscv64/kernel/vmem.c index bd7906b..4556593 100644 --- a/arch/riscv64/kernel/vmem.c +++ b/arch/riscv64/kernel/vmem.c @@ -605,6 +605,10 @@ stat_t setup_rpc_stack(struct tcb *t) vmflags_t flags = VM_V | VM_R | VM_W; /* note how VM_U is missing, userspace messing about will be done later */ + /* don't generate interrupt on first access, since it'll come from + * inside the kernel and we can't handle that */ + flags |= VM_A | VM_D; + pm_t page = alloc_page(MM_O1); if (!page) return ERR_OOMEM; @@ -751,7 +755,7 @@ void destroy_rpc(struct tcb *t) set_bits(*pte, vp_flags(VM_U)); } - t->arch.rpc_idx = ctx - 1; + t->arch.rpc_idx = ctx - 2; } void grow_rpc(struct tcb *t, vm_t top) |