linux-kernel - xtensa question, was Re: [PATCH V1 00/10] Remove duplicated kmap code

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Message-ID: <20200501084634.GH27858@infradead.org>
Date:   Fri, 1 May 2020 01:46:34 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     ira.weiny@...el.com
Cc:     linux-kernel@...r.kernel.org, Max Filippov <jcmvbkbc@...il.com>,
        linux-xtensa@...ux-xtensa.org
Subject: xtensa question, was Re: [PATCH V1 00/10] Remove duplicated kmap code

Hi Max,

any idea why xtensa uses PAGE_KERNEL_EXEC instead of PAGE_KERNEL
for kmap_prot?  Mapping all mapped highmem as executable seems rather
dangerous.