IOMMU Archive on lore.kernel.org
 help / color / Atom feed
From: Guo Ren <guoren@kernel.org>
To: Will Deacon <will@kernel.org>
Cc: julien.thierry@arm.com, Catalin Marinas <catalin.marinas@arm.com>,
	Palmer Dabbelt <palmer@sifive.com>,
	Will Deacon <will.deacon@arm.com>,
	christoffer.dall@arm.com, Atish Patra <Atish.Patra@wdc.com>,
	Julien Grall <julien.grall@arm.com>,
	gary@garyguo.net, linux-riscv@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, Mike Rapoport <rppt@linux.ibm.com>,
	aou@eecs.berkeley.edu, Arnd Bergmann <arnd@arndb.de>,
	suzuki.poulose@arm.com, Marc Zyngier <marc.zyngier@arm.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	linux-arm-kernel@lists.infradead.org,
	Anup Patel <anup.Patel@wdc.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	iommu@lists.linux-foundation.org, james.morse@arm.com
Subject: Re: [PATCH RFC 11/14] arm64: Move the ASID allocator code in a separate file
Date: Sun, 8 Sep 2019 07:52:55 +0800
Message-ID: <CAJF2gTSC1sGgmiTCgzKUTdPyUZ3LG4H7N8YbMyWr-E+eifGuYg@mail.gmail.com> (raw)
In-Reply-To: <20190624104006.lvm32nahemaqklxc@willie-the-truck>

Thx Will,

On Mon, Jun 24, 2019 at 6:40 PM Will Deacon <will@kernel.org> wrote:
> > I'll keep my system use the same ASID for SMP + IOMMU :P
>
> You will want a separate allocator for that:
>
> https://lkml.kernel.org/r/20190610184714.6786-2-jean-philippe.brucker@arm.com

Yes, it is hard to maintain ASID between IOMMU and CPUMMU or different
system, because it's difficult to synchronize the IO_ASID when the CPU
ASID is rollover.
But we could still use hardware broadcast TLB invalidation instruction
to uniformly manage the ASID and IO_ASID, or OTHER_ASID in our IOMMU.

Welcome to join our disscusion:
"Introduce an implementation of IOMMU in linux-riscv"
9 Sep 2019, 10:45 Jade-room-I&II (Corinthia Hotel Lisbon) RISC-V MC

--
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

       reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20190321163623.20219-1-julien.grall@arm.com>
     [not found] ` <20190321163623.20219-12-julien.grall@arm.com>
     [not found]   ` <0dfe120b-066a-2ac8-13bc-3f5a29e2caa3@arm.com>
     [not found]     ` <CAJF2gTTXHHgDboaexdHA284y6kNZVSjLis5-Q2rDnXCxr4RSmA@mail.gmail.com>
     [not found]       ` <c871a5ae-914f-a8bb-9474-1dcfec5d45bf@arm.com>
     [not found]         ` <20190619091219.GB7767@fuggles.cambridge.arm.com>
     [not found]           ` <CAJF2gTTmFq3yYa9UrdZRAFwJgC=KmKTe2_NFy_UZBUQovqQJPg@mail.gmail.com>
     [not found]             ` <20190619123939.GF7767@fuggles.cambridge.arm.com>
     [not found]               ` <CAJF2gTSiiiewTLwVAXvPLO7rTSUw1rg8VtFLzANdP2S2EEbTjg@mail.gmail.com>
     [not found]                 ` <20190624104006.lvm32nahemaqklxc@willie-the-truck>
2019-09-07 23:52                   ` Guo Ren [this message]
2019-09-12 14:02                     ` Will Deacon
2019-09-12 14:59                       ` Guo Ren
2019-09-13  7:13                         ` Guo Ren
2019-09-14  8:49                           ` Guo Ren
2019-09-16 12:57                           ` Jean-Philippe Brucker
2019-09-19 13:07                             ` Guo Ren
2019-09-19 15:18                               ` Jean-Philippe Brucker
2019-09-20  0:07                                 ` Guo Ren
2019-09-20  7:18                                   ` Jean-Philippe Brucker
2019-09-14 14:01                       ` Palmer Dabbelt
2019-09-15  5:03                         ` Anup Patel
2019-09-16 18:18                           ` Will Deacon
2019-09-16 18:28                             ` Palmer Dabbelt
2019-09-17  3:42                             ` Anup Patel
2019-09-19 13:36                               ` Guo Ren

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAJF2gTSC1sGgmiTCgzKUTdPyUZ3LG4H7N8YbMyWr-E+eifGuYg@mail.gmail.com \
    --to=guoren@kernel.org \
    --cc=Atish.Patra@wdc.com \
    --cc=anup.Patel@wdc.com \
    --cc=aou@eecs.berkeley.edu \
    --cc=arnd@arndb.de \
    --cc=catalin.marinas@arm.com \
    --cc=christoffer.dall@arm.com \
    --cc=gary@garyguo.net \
    --cc=iommu@lists.linux-foundation.org \
    --cc=james.morse@arm.com \
    --cc=julien.grall@arm.com \
    --cc=julien.thierry@arm.com \
    --cc=kvmarm@lists.cs.columbia.edu \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=marc.zyngier@arm.com \
    --cc=palmer@sifive.com \
    --cc=paul.walmsley@sifive.com \
    --cc=rppt@linux.ibm.com \
    --cc=suzuki.poulose@arm.com \
    --cc=will.deacon@arm.com \
    --cc=will@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

IOMMU Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-iommu/0 linux-iommu/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-iommu linux-iommu/ https://lore.kernel.org/linux-iommu \
		iommu@lists.linux-foundation.org iommu@archiver.kernel.org
	public-inbox-index linux-iommu

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.linux-foundation.lists.iommu


AGPL code for this site: git clone https://public-inbox.org/ public-inbox