On Tue, Feb 15, 2022 at 1:48 AM Al Viro wrote:
>
> On Mon, Feb 14, 2022 at 05:34:49PM +0100, Arnd Bergmann wrote:
>
> > -/*
> > - * Sparc64 is segmented, though more like the M68K than the I386.
> > - * We use the secondary ASI to address user memory, which references a
> > - * completely differen
On Mon, Feb 14, 2022 at 6:06 PM Christoph Hellwig wrote:
>
> > void prom_world(int enter)
> > {
> > - if (!enter)
> > - set_fs(get_fs());
> > -
> > __asm__ __volatile__("flushw");
> > }
>
> The enter argument is now unused.
Right, good point. I'll add a comment, but I thi
On Mon, Feb 14, 2022 at 05:34:49PM +0100, Arnd Bergmann wrote:
> -/*
> - * Sparc64 is segmented, though more like the M68K than the I386.
> - * We use the secondary ASI to address user memory, which references a
> - * completely different VM map, thus there is zero chance of the user
> - * doing s
> void prom_world(int enter)
> {
> - if (!enter)
> - set_fs(get_fs());
> -
> __asm__ __volatile__("flushw");
> }
The enter argument is now unused.
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From: Arnd Bergmann
sparc64 uses address space identifiers to differentiate between kernel
and user space, using ASI_P for kernel threads but ASI_AIUS for normal
user space, with the option of changing between them.
As nothing really changes the ASI any more, just hardcode ASI_AIUS
everywhere. K
