Re: [Qemu-devel] [PATCH for-2.12 0/2] RISC-V: Mark FP status dirty

[Michael Clark]

On Tue, Mar 27, 2018 at 7:22 PM, Richard Henderson <
address@hidden> wrote:

> Since it was my patch that broke FP state tracking in the
> first place, I feel obligated to fix it again.
>
> Mark mstatus[fs] as dirty whenever we write to the file.
> This can be optimized by only doing so once within a TB
> which initially began with a clean file.
>
> I have not yet put together an environment that can test
> this, so I'll need someone else to give it a go.
>

I have tested it with the simple test case running SMP Linux and it appears
okay (Note it must be compiled with -O2):

 http://oirase.annexia.org/tmp/sched.c

It is clearly broken without your two patches.