On 11/18/2019 11:17 AM, Michael Ellerman wrote:
Christophe Leroy <christophe.le...@c-s.fr> writes:
When not using large TLBs, the IMMR region is still
mapped as a whole block in the FIXMAP area.
Do not remove pages mapped in the FIXMAP region when
initialising paging.
Properly report that the IMMR region is block-mapped even
when not using large TLBs.
Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
---
arch/powerpc/mm/mem.c | 8 --------
arch/powerpc/mm/nohash/8xx.c | 13 +++++++------
2 files changed, 7 insertions(+), 14 deletions(-)
This blows up pmac32_defconfig + qemu mac99 for me with:
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
PCI: CLS 0 bytes, default 32
Trying to unpack rootfs image as initramfs...
BUG: Unable to handle kernel data access on write at 0xfffdf000
I tested it with pmac32_defconfig and qemu mac99 and don't get the problem:
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
PCI: CLS 0 bytes, default 32
Initialise system trusted keyrings
workingset: timestamp_bits=30 max_order=15 bucket_order=0
NFS: Registering the id_resolver key type
Key type id_resolver registered
...
Looks like I don't get that 'Trying to unpack rootfs image as
initramfs...', do you change anything to pmac32_defconfig ?
Anyway, when rebasing this patch on next branch, only the
arch/powerpc/mm/nohash/8xx.c change remains. The other part is already
applied through another patch.
So I believe the remaining part is safe to apply
Christophe
