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From: "Jarkko Sakkinen" <jarkko@kernel.org>
To: "Jarkko Sakkinen" <jarkko.sakkinen@iki.fi>,
	<linux-sgx@vger.kernel.org>, <linux-mm@kvack.org>
Subject: Re: VMA merging updateds?
Date: Sun, 22 Sep 2024 19:57:27 +0300	[thread overview]
Message-ID: <D4CZ02NF1J3S.I8A5PEL72AKX@kernel.org> (raw)
In-Reply-To: <D4CYJI7CQCK8.1ZRAUTU1V7KO7@iki.fi>

> On Sun Sep 22, 2024 at 7:27 PM EEST, Jarkko Sakkinen wrote:
> > Hi
> >
> > I started to look into this old issue with mm subsystem and SGX, i.e.
> > can we make SGX VMA's to merge together?
> >
> > This demonstrates the problem pretty well:
> >
> > https://lore.kernel.org/linux-sgx/884c7ea454cf2eb0ba2e95f7c25bd42018824f97.camel@kernel.org/
> >
> > It was result of brk() syscall being applied a few times.

Briging some context here. This can be fixed in the run-time by book
keeping the ranges and doing unmapping/mapping. I guess this goes
beyond what mm should support?

I thought to plain check this as it has been two years since my last
query on topic (if we could improve either the driver or mm somehow).

BR, Jarkko

  reply	other threads:[~2024-09-22 16:57 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-22 16:27 VMA merging updateds? Jarkko Sakkinen
2024-09-22 16:35 ` Jarkko Sakkinen
2024-09-22 16:57   ` Jarkko Sakkinen [this message]
2024-09-23  7:48     ` Jarkko Sakkinen
2024-09-26  0:07       ` Huang, Kai
2024-09-26  0:33         ` Jarkko Sakkinen
2024-09-26  0:38           ` Jarkko Sakkinen
2024-09-26  0:53             ` Huang, Kai
2024-09-26  0:38           ` Huang, Kai
2024-09-26  1:47             ` Jarkko Sakkinen
2024-09-26  1:48               ` Jarkko Sakkinen
2024-09-26 10:02                 ` Jarkko Sakkinen
2024-09-27 17:39         ` Lorenzo Stoakes
2024-09-29 22:36           ` Jarkko Sakkinen
2024-09-30  8:05             ` Lorenzo Stoakes
2024-10-09 14:03               ` Jarkko Sakkinen

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