Re: [Qemu-devel] Fwd: [PATCH v2.5] fixup! linux-user/sh4: Notice gUSA regions during signal delivery

[Aurelien Jarno]

On 2017-07-07 09:00, Richard Henderson wrote:
> On 07/07/2017 07:57 AM, Richard Henderson wrote:
> > +    /* ??? The SH4 kernel checks for and address above 0xC0000000.
> > +       However, the page mappings in qemu linux-user aren't as restricted
> > +       and we wind up with the normal stack mapped above 0xF0000000.
> > +       That said, there is no reason why the kernel should be allowing
> > +       a gUSA region that spans 1GB.  Use a tighter check here, for what
> > +       can actually be enabled by the immediate move.  */
> 
> Additionally, I can (and should) fix the address space problem for SH4 in
> linux-user/main.c, where we have already done so for MIPS and Nios2.
> 
> See the initialization of reserved_va.

I guess it's what you have done in the "linux-user fixes for va
mapping", which renders this version 2.5 obsolete. Therefore I guess the
version 2 is the one to be used instead.

Unfortunately my knowledge of linux-user is rather limited to review
this new series.

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
address@hidden                 http://www.aurel32.net