Re: [Xen-devel] [tip:x86/asm] x86/mm/xen: Suppress hugetlbfs in PV guests
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- Subject: Re: [Xen-devel] [tip:x86/asm] x86/mm/xen: Suppress hugetlbfs in PV guests
- From: David Vrabel <david.vrabel@xxxxxxxxxx>
- Date: Mon, 25 Apr 2016 13:39:34 +0100
- Cc: <boris.ostrovsky@xxxxxxxxxx>, Juergen Gross <JGross@xxxxxxxx>, <toshi.kani@xxxxxx>, <linux-tip-commits@xxxxxxxxxxxxxxx>, <peterz@xxxxxxxxxxxxx>, <brgerst@xxxxxxxxx>, Luis Rodriguez <Mcgrof@xxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>, <luto@xxxxxxxxxxxxxx>, <vkuznets@xxxxxxxxxx>, <dvlasenk@xxxxxxxxxx>, <bp@xxxxxxxxx>, <david.vrabel@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>, <akpm@xxxxxxxxxxxxxxxxxxxx>, <torvalds@xxxxxxxxxxxxxxxxxxxx>, <mingo@xxxxxxxxxx>
- In-reply-to: <alpine.DEB.2.11.1604250950380.3941@nanos>
- User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.5.0
On 25/04/16 08:52, Thomas Gleixner wrote:
> On Mon, 25 Apr 2016, Jan Beulich wrote:
>>>>> On 22.04.16 at 20:03, <hpa@xxxxxxxxx> wrote:
>>>> +#define hugepages_supported() cpu_has_pse
>>>>
>>>
>>> Please don't use the cpu_has_* macros anymore, they are going away soon.
>>>
>>> In this case it should be static_cpu_has(X86_FEATURE_PSE).
>>
>> I can certainly do that, but this
>> - will (mildly) harm backportability
>> - imo should have been requested much earlier (when the patch was
>> still under discussion)
>
> It's requested now as cpu_has_* is going away. So instead of making silly
> arguments you should have sent a delta patch fixing this.
Ingo fixed this up in the x86/asm branch[1] so I assumed this patch
didn't need updating.
David
[1]
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?h=x86/asm&id=b2eafe890d4a09bfa63ab31ff018d7d6bb8cfefc
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