From: Jan Beulich <jbeulich@suse.com>
To: "Roger Pau Monné" <roger.pau@citrix.com>
Cc: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
Andrew Cooper <andrew.cooper3@citrix.com>, Wei Liu <wl@xen.org>,
Julien Grall <julien@xen.org>,
Stefano Stabellini <sstabellini@kernel.org>,
Volodymyr Babchuk <volodymyr_babchuk@epam.com>,
Bertrand Marquis <bertrand.marquis@arm.com>,
Henry Wang <Henry.Wang@arm.com>
Subject: Re: [PATCH][4.17] EFI: don't convert memory marked for runtime use to ordinary RAM
Date: Tue, 4 Oct 2022 10:06:36 +0200 [thread overview]
Message-ID: <df0dc3e1-da12-9d42-b652-e33419134d38@suse.com> (raw)
In-Reply-To: <Yzb9BDGc45OshRZN@MacBook-Air-de-Roger.local>
On 30.09.2022 16:28, Roger Pau Monné wrote:
> On Fri, Sep 30, 2022 at 09:50:40AM +0200, Jan Beulich wrote:
>> efi_init_memory() in both relevant places is treating EFI_MEMORY_RUNTIME
>> higher priority than the type of the range. To avoid accessing memory at
>> runtime which was re-used for other purposes, make
>> efi_arch_process_memory_map() follow suit. While on x86 in theory the
>> same would apply to EfiACPIReclaimMemory, we don't actually "reclaim"
>> E820_ACPI memory there and hence that type's handling can be left alone.
>
> What about dom0? Should it be translated to E820_RESERVED so that
> dom0 doesn't try to use it either?
I'm afraid I don't understand the questions. Not the least because I
think "it" can't really mean "dom0" from the earlier sentence.
Jan
> I guess using E820_RESERVED
> could also confuse dom0 about ACPI data placement.
>
> Thanks, Roger.
next prev parent reply other threads:[~2022-10-04 8:06 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-30 7:50 [PATCH][4.17] EFI: don't convert memory marked for runtime use to ordinary RAM Jan Beulich
2022-09-30 11:55 ` Bertrand Marquis
2022-09-30 12:47 ` Luca Fancellu
2022-09-30 12:51 ` Bertrand Marquis
2022-10-04 15:58 ` Jan Beulich
2022-10-05 10:44 ` Julien Grall
2022-10-05 11:55 ` Jan Beulich
2022-10-05 18:09 ` Julien Grall
2022-10-06 8:39 ` Jan Beulich
2022-10-06 14:11 ` Jan Beulich
2022-10-08 19:08 ` Julien Grall
2022-10-10 6:20 ` Jan Beulich
2022-10-10 23:58 ` Stefano Stabellini
2022-10-11 7:52 ` Bertrand Marquis
2022-09-30 12:53 ` Andrew Cooper
2022-09-30 13:07 ` Jan Beulich
2022-09-30 13:35 ` Bertrand Marquis
2022-09-30 14:28 ` Roger Pau Monné
2022-10-04 8:06 ` Jan Beulich [this message]
2022-10-04 9:33 ` Roger Pau Monné
2022-10-04 10:23 ` Jan Beulich
2022-10-04 10:38 ` Roger Pau Monné
2022-10-04 10:44 ` Jan Beulich
2022-10-04 10:54 ` Roger Pau Monné
2022-10-04 12:18 ` Jan Beulich
2022-10-04 12:52 ` Roger Pau Monné
2022-10-04 13:10 ` Jan Beulich
2022-10-04 14:01 ` Roger Pau Monné
2022-10-04 14:39 ` Jan Beulich
2022-10-04 15:20 ` Roger Pau Monné
2022-10-04 15:55 ` Jan Beulich
2022-10-04 10:49 ` Andrew Cooper
2022-10-04 11:09 ` Jan Beulich
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