From: Jarkko Sakkinen <jarkko@kernel.org>
To: Dave Hansen <dave.hansen@intel.com>
Cc: codalist@telemann.coda.cs.cmu.edu, jaharkes@cs.cmu.edu,
Nathaniel McCallum <nathaniel@profian.com>,
linux-unionfs@vger.kernel.org, intel-gfx@lists.freedesktop.org,
Dave Hansen <dave.hansen@linux.intel.com>,
linux-mips@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Reinette Chatre <reinette.chatre@intel.com>,
linux-sgx@vger.kernel.org
Subject: Re: [Intel-gfx] [PATCH RFC v2] mm: Add f_ops->populate()
Date: Mon, 7 Mar 2022 17:44:17 +0200 [thread overview]
Message-ID: <YiYoUfYuTDsld6L0@iki.fi> (raw)
In-Reply-To: <3c974f25-ece6-102b-01c3-bd7e6274f613@intel.com>
On Mon, Mar 07, 2022 at 07:29:22AM -0800, Dave Hansen wrote:
> On 3/7/22 03:27, Jarkko Sakkinen wrote:
> > But e.g. in __mm_populate() anything with (VM_IO | VM_PFNMAP) gets
> > filtered out and never reach that function.
> >
> > I don't know unorthodox that'd be but could we perhaps have a VM
> > flag for SGX?
>
> SGX only works on a subset of the chips from one vendor on one
> architecture. That doesn't seem worth burning a VM flag.
What do you think of Matthew's idea of using ra_state for prediction?
BR, Jarkko
WARNING: multiple messages have this Message-ID (diff)
From: Jarkko Sakkinen <jarkko@kernel.org>
To: Dave Hansen <dave.hansen@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Nathaniel McCallum <nathaniel@profian.com>,
Reinette Chatre <reinette.chatre@intel.com>,
linux-sgx@vger.kernel.org, jaharkes@cs.cmu.edu,
linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
codalist@telemann.coda.cs.cmu.edu, linux-unionfs@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH RFC v2] mm: Add f_ops->populate()
Date: Mon, 7 Mar 2022 17:44:17 +0200 [thread overview]
Message-ID: <YiYoUfYuTDsld6L0@iki.fi> (raw)
In-Reply-To: <3c974f25-ece6-102b-01c3-bd7e6274f613@intel.com>
On Mon, Mar 07, 2022 at 07:29:22AM -0800, Dave Hansen wrote:
> On 3/7/22 03:27, Jarkko Sakkinen wrote:
> > But e.g. in __mm_populate() anything with (VM_IO | VM_PFNMAP) gets
> > filtered out and never reach that function.
> >
> > I don't know unorthodox that'd be but could we perhaps have a VM
> > flag for SGX?
>
> SGX only works on a subset of the chips from one vendor on one
> architecture. That doesn't seem worth burning a VM flag.
What do you think of Matthew's idea of using ra_state for prediction?
BR, Jarkko
WARNING: multiple messages have this Message-ID (diff)
From: Jarkko Sakkinen <jarkko@kernel.org>
To: Dave Hansen <dave.hansen@intel.com>
Cc: codalist@telemann.coda.cs.cmu.edu, jaharkes@cs.cmu.edu,
Nathaniel McCallum <nathaniel@profian.com>,
linux-unionfs@vger.kernel.org, intel-gfx@lists.freedesktop.org,
Dave Hansen <dave.hansen@linux.intel.com>,
linux-mips@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Reinette Chatre <reinette.chatre@intel.com>,
linux-sgx@vger.kernel.org
Subject: Re: [PATCH RFC v2] mm: Add f_ops->populate()
Date: Mon, 7 Mar 2022 17:44:17 +0200 [thread overview]
Message-ID: <YiYoUfYuTDsld6L0@iki.fi> (raw)
In-Reply-To: <3c974f25-ece6-102b-01c3-bd7e6274f613@intel.com>
On Mon, Mar 07, 2022 at 07:29:22AM -0800, Dave Hansen wrote:
> On 3/7/22 03:27, Jarkko Sakkinen wrote:
> > But e.g. in __mm_populate() anything with (VM_IO | VM_PFNMAP) gets
> > filtered out and never reach that function.
> >
> > I don't know unorthodox that'd be but could we perhaps have a VM
> > flag for SGX?
>
> SGX only works on a subset of the chips from one vendor on one
> architecture. That doesn't seem worth burning a VM flag.
What do you think of Matthew's idea of using ra_state for prediction?
BR, Jarkko
next prev parent reply other threads:[~2022-03-08 12:51 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-06 3:26 [Intel-gfx] [PATCH RFC v2] mm: Add f_ops->populate() Jarkko Sakkinen
2022-03-06 3:26 ` Jarkko Sakkinen
2022-03-06 3:26 ` Jarkko Sakkinen
2022-03-06 23:24 ` [Intel-gfx] " Andrew Morton
2022-03-06 23:24 ` Andrew Morton
2022-03-06 23:24 ` Andrew Morton
2022-03-06 23:41 ` [Intel-gfx] " Dave Hansen
2022-03-06 23:41 ` Dave Hansen
2022-03-06 23:41 ` Dave Hansen
2022-03-07 11:27 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-07 11:27 ` Jarkko Sakkinen
2022-03-07 11:27 ` Jarkko Sakkinen
2022-03-07 15:29 ` [Intel-gfx] " Dave Hansen
2022-03-07 15:29 ` Dave Hansen
2022-03-07 15:29 ` Dave Hansen
2022-03-07 15:44 ` Jarkko Sakkinen [this message]
2022-03-07 15:44 ` Jarkko Sakkinen
2022-03-07 15:44 ` Jarkko Sakkinen
2022-03-07 14:37 ` [Intel-gfx] " Matthew Wilcox
2022-03-07 14:37 ` Matthew Wilcox
2022-03-07 14:37 ` Matthew Wilcox
2022-03-07 15:43 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-07 15:43 ` Jarkko Sakkinen
2022-03-07 15:43 ` Jarkko Sakkinen
2022-03-07 13:00 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-07 13:00 ` Jarkko Sakkinen
2022-03-07 13:00 ` Jarkko Sakkinen
2022-03-08 8:28 ` kernel test robot
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