Re: [Qemu-devel] [PATCH 0/4] SPARC64: Implement sparcv9 ldfa/stfa instructions

[tsnsaito]

Hi,

At Wed, 13 Jul 2011 19:34:10 +0300,
Blue Swirl wrote:
> On Wed, Jul 13, 2011 at 3:48 PM,  <address@hidden> wrote:
> > At Wed, 13 Jul 2011 13:09:28 +0100,
> > Mark Cave-Ayland wrote:
> >> >> Nice series!
> >> >> May I ask what have you used as a test case to discover the problem?
> >> >
> >> > I found the problem when I was trying to run the linux/sparc64 kernel.
> >> > It seemed that copy_to_user() did not work as expected.
> >>
> >> That's good to hear. How far have you managed to get a 64-bit Linux
> >> kernel to boot to date?
> >
> > With dirty hacks other than the ldfa/stfa fixes, I have managed
> > to get the busybox shell prompt using a kernel with initramfs.
> > I'm planning to send other fixes after cleaning them up.
> 
> Great! In which areas are the hacks needed?

Roughly speaking I've added/changed the following so far:
- %fprs register dirty bits support
- hardware interrupt handing (both interrupt controller and cpu side)
  also needed to modify the openbios.
- nonfaulting load ASI
  glibc memcpy seems to use nonfaulting loads

---- 
Tsuneo Saito <address@hidden>