diff options
| author | Ralf Ramsauer <ralf.ramsauer@oth-regensburg.de> | 2022-04-23 23:59:07 +0200 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2022-04-29 10:47:46 +1000 |
| commit | 457a86a0ebe6a5544aa4f2ee7a2af5c125b9fb1b (patch) | |
| tree | 26014f0fdecb8ff07ca9cc9b3b01dffea025ff99 /util/host-utils.c | |
| parent | cf7ed971ae6f4e3683340b890a2db664a88cd896 (diff) | |
| download | qemu-457a86a0ebe6a5544aa4f2ee7a2af5c125b9fb1b.zip qemu-457a86a0ebe6a5544aa4f2ee7a2af5c125b9fb1b.tar.gz qemu-457a86a0ebe6a5544aa4f2ee7a2af5c125b9fb1b.tar.bz2 | |
target/riscv: Fix incorrect PTE merge in walk_pte
Two non-subsequent PTEs can be mapped to subsequent paddrs. In this
case, walk_pte will erroneously merge them.
Enforce the split up, by tracking the virtual base address.
Let's say we have the mapping:
0x81200000 -> 0x89623000 (4K)
0x8120f000 -> 0x89624000 (4K)
Before, walk_pte would have shown:
vaddr paddr size attr
---------------- ---------------- ---------------- -------
0000000081200000 0000000089623000 0000000000002000 rwxu-ad
as it only checks for subsequent paddrs. With this patch, it becomes:
vaddr paddr size attr
---------------- ---------------- ---------------- -------
0000000081200000 0000000089623000 0000000000001000 rwxu-ad
000000008120f000 0000000089624000 0000000000001000 rwxu-ad
Signed-off-by: Ralf Ramsauer <ralf.ramsauer@oth-regensburg.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220423215907.673663-1-ralf.ramsauer@oth-regensburg.de>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'util/host-utils.c')
0 files changed, 0 insertions, 0 deletions