linux-kernel - Re: [PATCH 0/4] arch, mm: improve robustness of direct map manipulation

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Message-ID: <ae82f905a0092adb7e0f0ac206335c1883b3170f.camel@intel.com>
Date:   Mon, 26 Oct 2020 01:13:52 +0000
From:   "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
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Subject: Re: [PATCH 0/4] arch, mm: improve robustness of direct map
 manipulation

On Sun, 2020-10-25 at 12:15 +0200, Mike Rapoport wrote:
> Indeed, for architectures that define CONFIG_ARCH_HAS_SET_DIRECT_MAP
> it is
> possible that __kernel_map_pages() would fail, but since this
> function is
> void, the failure will go unnoticed.

Could you elaborate on how this could happen? Do you mean during
runtime today or if something new was introduced?