linux-kernel - Re: [PATCH 1/5] MIPS: Disallow CPU_SUPPORTS

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Message-ID: <MWHPR2201MB1277F0963449C85EE94A4E09C1C40@MWHPR2201MB1277.namprd22.prod.outlook.com>
Date:   Mon, 22 Jul 2019 21:15:04 +0000
From:   Paul Burton <paul.burton@...s.com>
To:     Paul Cercueil <paul@...pouillou.net>
CC:     Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <pburton@...ecomp.com>,
        James Hogan <jhogan@...nel.org>, "od@...c.me" <od@...c.me>,
        "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Daniel Silsby <dansilsby@...il.com>,
        Paul Cercueil <paul@...pouillou.net>,
        "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>
Subject: Re: [PATCH 1/5] MIPS: Disallow CPU_SUPPORTS_HUGEPAGES for XPA,EVA

Hello,

Paul Cercueil wrote:
> From: Daniel Silsby <dansilsby@...il.com>
> 
> In preparation for 32-bit MIPS huge page support.
> 
> EVA,XPA are extended-addressing modes for 32-bit MIPS systems. Because
> huge pages aren't currently supported in 32-bit MIPS, this doesn't take
> any features away from EVA,XPA-enabled systems. However, the soon-to-
> come 32-bit MIPS huge page support doesn't yet support them.
> 
> This also disables CPU_SUPPORTS_HUGEPAGES for the small number of 32-bit
> MIPS CPUs from Alchemy/Netlogic that support a custom 36-bit extended
> addressing. It's unknown if they even support huge pages in hardware.
> 
> Signed-off-by: Daniel Silsby <dansilsby@...il.com>
> Signed-off-by: Paul Cercueil <paul@...pouillou.net>

Series applied to mips-next.

Thanks,
    Paul

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