linux-kernel - Re: [PATCH v3] ACPI/IORT: Remove erroneous id_count check in iort_node_get_rmr

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Message-Id: <169055250812.1025105.13485697321170348706.b4-ty@arm.com>
Date:   Fri, 28 Jul 2023 14:55:13 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     lpieralisi@...nel.org, guohanjun@...wei.com, sudeep.holla@....com,
        rafael@...nel.org, Guanghui Feng <guanghuifeng@...ux.alibaba.com>
Cc:     Will Deacon <will@...nel.org>, linux-acpi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        baolin.wang@...ux.alibaba.com,
        alikernel-developer@...ux.alibaba.com
Subject: Re: [PATCH v3] ACPI/IORT: Remove erroneous id_count check in iort_node_get_rmr_info()

On Mon, 17 Jul 2023 19:33:45 +0800, Guanghui Feng wrote:
> According to the ARM IORT specifications DEN 0049 issue E,
> the "Number of IDs" field in the ID mapping format reports
> the number of IDs in the mapping range minus one.
> 
> In iort_node_get_rmr_info(), we erroneously skip ID mappings
> whose "Number of IDs" equal to 0, resulting in valid mapping
> nodes with a single ID to map being skipped, which is wrong.
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] ACPI/IORT: Remove erroneous id_count check in iort_node_get_rmr_info()
      https://git.kernel.org/arm64/c/003e6b56d780

-- 
Catalin