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From: Baoquan He <bhe@redhat.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Lianbo Jiang <lijiang@redhat.com>,
	linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org,
	platform-driver-x86@vger.kernel.org, x86@kernel.org,
	ardb@kernel.org, tglx@linutronix.de, mingo@redhat.com,
	bp@alien8.de, dvhart@infradead.org, andy@infradead.org,
	kexec@lists.infradead.org, dyoung@redhat.com
Subject: Re: [PATCH] x86/efi: Do not release sub-1MB memory regions when the crashkernel option is specified
Date: Mon, 12 Apr 2021 09:13:47 +0800	[thread overview]
Message-ID: <20210412011347.GA4282@MiWiFi-R3L-srv> (raw)
In-Reply-To: <D7D32C89-4F99-434A-B7AF-7BEBDA494172@zytor.com>

On 04/09/21 at 07:59pm, H. Peter Anvin wrote:
> Why don't we do this unconditionally? At the very best we gain half a megabyte of memory (except the trampoline, which has to live there, but it is only a few kilobytes.)

This is a great suggestion, thanks. I think we can fix it in this way to
make code simpler. Then the specific caring of real mode in
efi_free_boot_services() can be removed too.

Thanks
Baoquan


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WARNING: multiple messages have this Message-ID (diff)
From: Baoquan He <bhe@redhat.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Lianbo Jiang <lijiang@redhat.com>,
	linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org,
	platform-driver-x86@vger.kernel.org, x86@kernel.org,
	ardb@kernel.org, tglx@linutronix.de, mingo@redhat.com,
	bp@alien8.de, dvhart@infradead.org, andy@infradead.org,
	kexec@lists.infradead.org, dyoung@redhat.com
Subject: Re: [PATCH] x86/efi: Do not release sub-1MB memory regions when the crashkernel option is specified
Date: Mon, 12 Apr 2021 09:13:47 +0800	[thread overview]
Message-ID: <20210412011347.GA4282@MiWiFi-R3L-srv> (raw)
In-Reply-To: <D7D32C89-4F99-434A-B7AF-7BEBDA494172@zytor.com>

On 04/09/21 at 07:59pm, H. Peter Anvin wrote:
> Why don't we do this unconditionally? At the very best we gain half a megabyte of memory (except the trampoline, which has to live there, but it is only a few kilobytes.)

This is a great suggestion, thanks. I think we can fix it in this way to
make code simpler. Then the specific caring of real mode in
efi_free_boot_services() can be removed too.

Thanks
Baoquan


  parent reply	other threads:[~2021-04-12  1:14 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07 14:03 [PATCH] x86/efi: Do not release sub-1MB memory regions when the crashkernel option is specified Lianbo Jiang
2021-04-07 14:03 ` Lianbo Jiang
2021-04-09 12:44 ` Baoquan He
2021-04-09 12:44   ` Baoquan He
2021-04-10  2:56   ` lijiang
2021-04-10  2:56     ` lijiang
     [not found] ` <D7D32C89-4F99-434A-B7AF-7BEBDA494172@zytor.com>
2021-04-12  1:13   ` Baoquan He [this message]
2021-04-12  1:13     ` Baoquan He
2021-04-12  1:49     ` Andy Lutomirski
2021-04-12  1:49       ` Andy Lutomirski
2021-04-12  9:52       ` Baoquan He
2021-04-12  9:52         ` Baoquan He
2021-04-12 10:49         ` lijiang
2021-04-12 10:49           ` lijiang
2021-04-12 15:24         ` Andy Lutomirski
2021-04-12 15:24           ` Andy Lutomirski
2021-04-13  9:45           ` Baoquan He
2021-04-13  9:45             ` Baoquan He
     [not found]             ` <CANU+ZydgWTSg+iUix8ggn-cSPpg8qtShaUQ47cOeeMxFmXp_zQ@mail.gmail.com>
     [not found]               ` <CANU+ZydyKsctuFjPfBz7PuS=FaUtK0gs5Lq06pL5nuRJKe+J0w@mail.gmail.com>
2021-05-24  8:32                 ` Baoquan He
2021-05-24  8:32                   ` Baoquan He

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