| To: | Matt Turner <mattst88@gmail.com> |
|---|---|
| Subject: | Re: [PATCH] mips: set ST0_MX flag for MDMX |
| From: | Sergei Shtylyov <sshtylyov@mvista.com> |
| Date: | Fri, 04 May 2012 15:16:54 +0400 |
| Cc: | Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org |
| In-reply-to: | <1336084845-28995-1-git-send-email-mattst88@gmail.com> |
| References: | <1336084845-28995-1-git-send-email-mattst88@gmail.com> |
| Sender: | linux-mips-bounce@linux-mips.org |
| User-agent: | Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 |
Hello. On 04-05-2012 2:40, Matt Turner wrote: As the comment in commit 3301edcb Please also specify that commit's summary in parens. says, DSP and MDMX share the same config flag bit. Without this set, MDMX instructions cause Illegal instruction errors. Signed-off-by: Matt Turner<mattst88@gmail.com> --- Is MDMX implemented by anything other than some Broadcom CPUs? Is it totally replaced by DSP? I had a terrible time finding any documentation on it (which is annoying because Volume IV-b covering MDMX is referenced by all the MIPS64 documents.) but finally found a copy here: www.enlight.ru/docs/cpu/risc/mips/MDMXspec.pdf If it's dead, it's too bad because it's a pretty cool ISA. WBR, Sergei |
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