On 8/20/24 10:31, Linus Torvalds wrote:
> On Mon, 19 Aug 2024 at 23:26, Michael Ellerman <mpe@xxxxxxxxxxxxxx> wrote:
>>
>> Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes:
>> > +static struct vm_special_mapping vdso_mapping = {
>> > + .name = "[vdso]",
>> > + .pages = syscall_pages;
>> ^
>> should be ,
>
> Ack. Changed here locally.
Hexagon also has &&vdso_page which I don't understand (but have a toolchain for
somewhere to at least smoketest...)
> But I assume you also don't actually test sh...
But I do.
Aside: arch/sh smoketests easily under qemu, here's a relocatable binary toolchain:
wget https://landley.net/bin/toolchains/latest/sh4-linux-musl-cross.tar.xz
tar xvf sh4-linux-musl-cross-tar.xz
CROSS_COMPILE=$PWD/sh4-linux-musl-cross/bin/sh4-linux-musl-
And https://landley.net/bin/mkroot/latest/sh4.tgz is a tiny qemu-system-sh4
system with kernel + initramfs.cpio.gz + run-qemu.sh with the config used to
build it under docs/ and as the first three lines of docs/linux-miniconfig
record, the kernel is arch/sh/boot/zImage.
You can keep the initramfs.cpio.gz and run-qemu.sh and swap out the kernel for a
quick boot to shell prompt under qemu. Serial console is qemu's stdin/stdout,
"exit" to shut down the emulator.
The build script, if you care, is 400 lines of bash:
https://github.com/landley/toybox/blob/master/mkroot/mkroot.sh
> It would be good to get acks from the architectures that still used
> the legacy interface.
I'll give arch/sh a whirl. Can somebody answer my above hexagon question?
> Linus
Rob
