Open dayeol opened 5 years ago
I found that sometimes tlb_fill gets size=0, which I don't understand, and if size=0, PMP breaks on boundary addresses.
tlb_fill
size=0
https://github.com/riscv/riscv-qemu/blob/riscv-qemu-3.1/target/riscv/pmp.c#L187
Let's say PMP address range is 0x1000-0x1fff, ea will be 0x1fff so 0x2000 should not included in the range. However, since addr + size - 1 is 0x2000 + 0 - 1 = 0x1fff, it will be considered as in-range, which is not the case.
addr + size - 1
I found that sometimes
tlb_fillgetssize=0, which I don't understand, and ifsize=0, PMP breaks on boundary addresses.https://github.com/riscv/riscv-qemu/blob/riscv-qemu-3.1/target/riscv/pmp.c#L187
Let's say PMP address range is 0x1000-0x1fff, ea will be 0x1fff so 0x2000 should not included in the range. However, since
addr + size - 1is 0x2000 + 0 - 1 = 0x1fff, it will be considered as in-range, which is not the case.