From: Xishi Qiu <qiuxishi@huawei.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
"H. Peter Anvin" <hpa@zytor.com>
Cc: yeyunfeng <yeyunfeng@huawei.com>, Wenan Mao <maowenan@huawei.com>,
Linux MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: [RFC] should BIOS change the efi type when we set CONFIG_X86_RESERVE_LOW ?
Date: Thu, 12 Apr 2018 09:49:59 +0800 [thread overview]
Message-ID: <5ACEBB47.3060300@huawei.com> (raw)
Hi, I find CONFIG_X86_RESERVE_LOW=64 in my system, so trim_low_memory_range()
will reserve low 64kb memory. But efi_free_boot_services() will free it to
buddy system again later because BIOS set the type to EFI_BOOT_SERVICES_CODE.
Here is the log:
...
efi: mem03: type=3, attr=0xf, range=[0x000000000000e000-0x0000000000010000) (0MB
...
next reply other threads:[~2018-04-12 1:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-12 1:49 Xishi Qiu [this message]
2018-04-23 10:17 ` Xishi Qiu
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