From: Michael Ellerman <mpe@ellerman•id.au>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux•vnet.ibm.com>,
Alexey Kardashevskiy <aik@ozlabs•ru>,
benh@kernel•crashing.org, paulus@samba•org
Cc: linuxppc-dev@lists•ozlabs.org
Subject: Re: [PATCH] powerpc: Build fix for non SPARSEMEM_VMEMAP config
Date: Thu, 29 Jun 2017 15:50:57 +1000 [thread overview]
Message-ID: <878tkbbav2.fsf@concordia.ellerman.id.au> (raw)
In-Reply-To: <bb3cb2f5-12dd-0b0d-0b2a-ca5de2d1f6bf@linux.vnet.ibm.com>
"Aneesh Kumar K.V" <aneesh.kumar@linux•vnet.ibm.com> writes:
> On Wednesday 28 June 2017 12:48 PM, Alexey Kardashevskiy wrote:
>> On 28/06/17 16:09, Aneesh Kumar K.V wrote:
>>> We can use pfn_to_page in realmode for other configs. Hence remove the
>>> CONFIG_FLATMEM ifdef
>>
>> For CONFIG_SPARSEMEM and CONFIG_DISCONTIGMEM and others (I am struggling to
>> find the full list :) )? Are you sure about that? If I recall correctly, at
>> the time realmode_pfn_to_page() could not work for all of them, what changed?
>
> That is one thing I wanted to check. Everything other than
> SPARSEMEM_VMEMMAP should use linear mapping which can work with real
> mode also right ? Or am i missing something ?
I think that's right. But I'm going to make you test it anyway :)
cheers
next prev parent reply other threads:[~2017-06-29 5:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-28 6:09 [PATCH] powerpc: Build fix for non SPARSEMEM_VMEMAP config Aneesh Kumar K.V
2017-06-28 7:18 ` Alexey Kardashevskiy
2017-06-28 10:25 ` Aneesh Kumar K.V
2017-06-29 5:50 ` Michael Ellerman [this message]
2017-07-24 9:19 ` Aneesh Kumar K.V
2017-07-27 12:37 ` Michael Ellerman
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