From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2 0/5] Huge pages for short descriptors on ARM
Date: Thu, 24 Apr 2014 11:46:24 +0100 [thread overview]
Message-ID: <20140424104624.GD19564@arm.com> (raw)
In-Reply-To: <20140424104232.GK26756@n2100.arm.linux.org.uk>
On Thu, Apr 24, 2014 at 11:42:32AM +0100, Russell King - ARM Linux wrote:
> On Thu, Apr 24, 2014 at 11:36:39AM +0100, Will Deacon wrote:
> > I guess I'm after some commitment that this is (a) useful to somebody and
> > (b) going to be tested regularly, otherwise it will go the way of things
> > like big-endian, where we end up carrying around code which is broken more
> > often than not (although big-endian is more self-contained).
>
> It may be something worth considering adding to my nightly builder/boot
> testing, but I suspect that's impractical as it probably requires a BE
> userspace, which would then mean that the platform can't boot LE.
>
> I suspect that we will just have to rely on BE users staying around and
> reporting problems when they occur.
Indeed. Marc and I have BE guests running under kvmtool on an LE host, so
that's what I've been using (then a BE busybox can sit in the host
filesystem and be passed via something like 9pfs).
Will
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will.deacon@arm.com>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Steve Capper <steve.capper@linaro.org>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
"robherring2@gmail.com" <robherring2@gmail.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"gerald.schaefer@de.ibm.com" <gerald.schaefer@de.ibm.com>
Subject: Re: [PATCH V2 0/5] Huge pages for short descriptors on ARM
Date: Thu, 24 Apr 2014 11:46:24 +0100 [thread overview]
Message-ID: <20140424104624.GD19564@arm.com> (raw)
In-Reply-To: <20140424104232.GK26756@n2100.arm.linux.org.uk>
On Thu, Apr 24, 2014 at 11:42:32AM +0100, Russell King - ARM Linux wrote:
> On Thu, Apr 24, 2014 at 11:36:39AM +0100, Will Deacon wrote:
> > I guess I'm after some commitment that this is (a) useful to somebody and
> > (b) going to be tested regularly, otherwise it will go the way of things
> > like big-endian, where we end up carrying around code which is broken more
> > often than not (although big-endian is more self-contained).
>
> It may be something worth considering adding to my nightly builder/boot
> testing, but I suspect that's impractical as it probably requires a BE
> userspace, which would then mean that the platform can't boot LE.
>
> I suspect that we will just have to rely on BE users staying around and
> reporting problems when they occur.
Indeed. Marc and I have BE guests running under kvmtool on an LE host, so
that's what I've been using (then a BE busybox can sit in the host
filesystem and be passed via something like 9pfs).
Will
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WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will.deacon@arm.com>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Steve Capper <steve.capper@linaro.org>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
"robherring2@gmail.com" <robherring2@gmail.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"gerald.schaefer@de.ibm.com" <gerald.schaefer@de.ibm.com>
Subject: Re: [PATCH V2 0/5] Huge pages for short descriptors on ARM
Date: Thu, 24 Apr 2014 11:46:24 +0100 [thread overview]
Message-ID: <20140424104624.GD19564@arm.com> (raw)
In-Reply-To: <20140424104232.GK26756@n2100.arm.linux.org.uk>
On Thu, Apr 24, 2014 at 11:42:32AM +0100, Russell King - ARM Linux wrote:
> On Thu, Apr 24, 2014 at 11:36:39AM +0100, Will Deacon wrote:
> > I guess I'm after some commitment that this is (a) useful to somebody and
> > (b) going to be tested regularly, otherwise it will go the way of things
> > like big-endian, where we end up carrying around code which is broken more
> > often than not (although big-endian is more self-contained).
>
> It may be something worth considering adding to my nightly builder/boot
> testing, but I suspect that's impractical as it probably requires a BE
> userspace, which would then mean that the platform can't boot LE.
>
> I suspect that we will just have to rely on BE users staying around and
> reporting problems when they occur.
Indeed. Marc and I have BE guests running under kvmtool on an LE host, so
that's what I've been using (then a BE busybox can sit in the host
filesystem and be passed via something like 9pfs).
Will
next prev parent reply other threads:[~2014-04-24 10:46 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-16 11:46 [PATCH V2 0/5] Huge pages for short descriptors on ARM Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` [PATCH V2 1/5] mm: hugetlb: Introduce huge_pte_{page,present,young} Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` [PATCH V2 2/5] arm: mm: Adjust the parameters for __sync_icache_dcache Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` [PATCH V2 3/5] arm: mm: Make mmu_gather aware of huge pages Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` [PATCH V2 4/5] arm: mm: HugeTLB support for non-LPAE systems Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` [PATCH V2 5/5] arm: mm: Add Transparent HugePage support for non-LPAE Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-16 11:46 ` Steve Capper
2014-04-24 10:22 ` [PATCH V2 0/5] Huge pages for short descriptors on ARM Steve Capper
2014-04-24 10:22 ` Steve Capper
2014-04-24 10:22 ` Steve Capper
2014-04-24 10:36 ` Will Deacon
2014-04-24 10:36 ` Will Deacon
2014-04-24 10:36 ` Will Deacon
2014-04-24 10:42 ` Russell King - ARM Linux
2014-04-24 10:42 ` Russell King - ARM Linux
2014-04-24 10:42 ` Russell King - ARM Linux
2014-04-24 10:46 ` Will Deacon [this message]
2014-04-24 10:46 ` Will Deacon
2014-04-24 10:46 ` Will Deacon
2014-04-24 10:55 ` Steve Capper
2014-04-24 10:55 ` Steve Capper
2014-04-24 10:55 ` Steve Capper
2014-04-24 11:03 ` Russell King - ARM Linux
2014-04-24 11:03 ` Russell King - ARM Linux
2014-04-24 11:03 ` Russell King - ARM Linux
2014-04-24 12:03 ` Steve Capper
2014-04-24 12:03 ` Steve Capper
2014-04-24 12:03 ` Steve Capper
2014-06-03 0:27 ` Grazvydas Ignotas
2014-06-03 0:27 ` Grazvydas Ignotas
2014-06-03 0:27 ` Grazvydas Ignotas
2014-04-24 13:33 ` Rob Herring
2014-04-24 13:33 ` Rob Herring
2014-04-24 13:33 ` Rob Herring
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