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Fixed mapping kernel stack

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This commit is contained in:
Stephen Marz 2019-10-21 13:19:52 -04:00
parent ce0cc7df11
commit 7e3d97b908
1 changed files with 2 additions and 2 deletions
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4
risc_v/ch4/src/lib.rs
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@ -264,7 +264,7 @@ extern "C" fn kinit() {
id_map_range(
&mut root,
cpu::KERNEL_TRAP_FRAME[0].trap_stack.sub(page::PAGE_SIZE) as usize,
cpu::KERNEL_TRAP_FRAME[0].trap_stack as usize + 1,
cpu::KERNEL_TRAP_FRAME[0].trap_stack as usize,
page::EntryBits::ReadWrite.val(),
);
id_map_range(
@ -273,7 +273,7 @@ extern "C" fn kinit() {
cpu::mscratch_read() + core::mem::size_of::<cpu::KernelTrapFrame>(),
page::EntryBits::ReadWrite.val(),
);
let p = cpu::KERNEL_TRAP_FRAME[0].trap_stack as usize;
let p = cpu::KERNEL_TRAP_FRAME[0].trap_stack as usize - 1;
let m = page::virt_to_phys(&root, p).unwrap_or(0);
println!("Walk 0x{:x} = 0x{:x}", p, m);
}