From: Rob Herring <robh@kernel.org>
To: Oleksandr Tyshchenko <olekstysh@gmail.com>
Cc: devicetree@vger.kernel.org,
Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>,
Rob Herring <robh+dt@kernel.org>,
xen-devel@lists.xenproject.org, Julien Grall <julien@xen.org>,
Stefano Stabellini <sstabellini@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH V4 6/6] dt-bindings: xen: Clarify "reg" purpose
Date: Fri, 10 Dec 2021 10:41:52 -0600 [thread overview]
Message-ID: <YbODUP7jnSWffumD@robh.at.kernel.org> (raw)
In-Reply-To: <1639136201-27530-1-git-send-email-olekstysh@gmail.com>
On Fri, 10 Dec 2021 13:36:41 +0200, Oleksandr Tyshchenko wrote:
> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>
> Xen on Arm has gained new support recently to calculate and report
> extended regions (unused address space) safe to use for external
> mappings. These regions are reported via "reg" property under
> "hypervisor" node in the guest device-tree. As region 0 is reserved
> for grant table space (always present), the indexes for extended
> regions are 1...N.
>
> No device-tree bindings update is needed (except clarifying the text)
> as guest infers the presence of extended regions from the number
> of regions in "reg" property.
>
> Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
> ---
> Changes V2 -> V3:
> - new patch
>
> Changes V3 -> V4:
> - add Stefano's R-b and Rob's A-b
> - remove sentence about ACPI for "reg" and "interrupts"
> properties
>
> Changes V4 -> V4.1
> - bring the mentioning of ACPI back which, as was pointed out by Julien,
> fits in the context:
> https://lore.kernel.org/xen-devel/9602b019-6c20-cdc7-23f3-9e4f8fd720f6@xen.org/T/#t
> so technically restore V3 state
> - remove Stefano's R-b and Rob's A-b as I am not 100% sure they are
> happy with that
> ---
> Documentation/devicetree/bindings/arm/xen.txt | 12 ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>
Acked-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2021-12-10 16:41 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-09 20:05 [PATCH V4 0/6] xen: Add support of extended regions (safe ranges) on Arm Oleksandr Tyshchenko
2021-12-09 20:05 ` [PATCH V4 1/6] xen/unpopulated-alloc: Drop check for virt_addr_valid() in fill_list() Oleksandr Tyshchenko
2021-12-09 20:05 ` [PATCH V4 2/6] arm/xen: Switch to use gnttab_setup_auto_xlat_frames() for DT Oleksandr Tyshchenko
2021-12-09 20:05 ` [PATCH V4 3/6] xen/balloon: Bring alloc(free)_xenballooned_pages helpers back Oleksandr Tyshchenko
2021-12-09 20:05 ` [PATCH V4 4/6] xen/unpopulated-alloc: Add mechanism to use Xen resource Oleksandr Tyshchenko
2021-12-10 1:19 ` Stefano Stabellini
2021-12-09 20:05 ` [PATCH V4 5/6] arm/xen: Read extended regions from DT and init " Oleksandr Tyshchenko
2021-12-09 20:05 ` [PATCH V4 6/6] dt-bindings: xen: Clarify "reg" purpose Oleksandr Tyshchenko
2021-12-10 9:09 ` Julien Grall
2021-12-10 9:33 ` Oleksandr
2021-12-10 11:36 ` Oleksandr Tyshchenko
2021-12-10 13:54 ` Bertrand Marquis
2021-12-10 16:41 ` Rob Herring [this message]
2021-12-16 21:51 ` Stefano Stabellini
2021-12-16 22:02 ` [PATCH V4 0/6] xen: Add support of extended regions (safe ranges) on Arm Oleksandr
2021-12-17 19:13 ` Boris Ostrovsky
2021-12-17 19:19 ` Oleksandr
2021-12-17 19:23 ` Boris Ostrovsky
2021-12-17 19:17 ` Boris Ostrovsky
2022-01-07 11:31 ` Juergen Gross
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