From: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
To: Sven Schnelle <svens@stackframe.org>, <linux-mips@linux-mips.org>
Subject: Re: MIPS: MIPS74K needs post dma flush
Date: Mon, 7 Nov 2016 12:06:18 -0800 [thread overview]
Message-ID: <5820DEBA.6080800@imgtec.com> (raw)
In-Reply-To: <20161107194128.25086-2-svens@stackframe.org>
74K does NOT have an aggressive speculation, never for D-Cache, never
for I-cache. D-Cache doesn't an advance speculation load at all, I-cache
never does a wrong speculation.
So, post-DMA flush is not needed in any form.
- Leonid.
WARNING: multiple messages have this Message-ID (diff)
From: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
To: Sven Schnelle <svens@stackframe.org>, linux-mips@linux-mips.org
Subject: Re: MIPS: MIPS74K needs post dma flush
Date: Mon, 7 Nov 2016 12:06:18 -0800 [thread overview]
Message-ID: <5820DEBA.6080800@imgtec.com> (raw)
Message-ID: <20161107200618.SI_iWWeT_3ByNsQQRTPVlMxwf14Buw9FB1oF7WNWazY@z> (raw)
In-Reply-To: <20161107194128.25086-2-svens@stackframe.org>
74K does NOT have an aggressive speculation, never for D-Cache, never
for I-cache. D-Cache doesn't an advance speculation load at all, I-cache
never does a wrong speculation.
So, post-DMA flush is not needed in any form.
- Leonid.
next prev parent reply other threads:[~2016-11-07 20:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-07 19:41 MIPS74K dma coherence issue Sven Schnelle
2016-11-07 19:41 ` [PATCH] MIPS: MIPS74K needs post dma flush Sven Schnelle
2016-11-07 20:06 ` Leonid Yegoshin [this message]
2016-11-07 20:06 ` Leonid Yegoshin
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