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From: "Jan Beulich" <JBeulich@suse.com>
To: Daniel Kiper <daniel.kiper@oracle.com>
Cc: Juergen Gross <JGross@suse.com>,
	sstabellini@kernel.org, andrew.cooper3@citrix.com,
	cardoe@cardoe.com, pgnet.dev@gmail.com, ning.sun@intel.com,
	julien.grall@arm.com, xen-devel@lists.xenproject.org,
	qiaowei.ren@intel.com, gang.wei@intel.com, fu.wei@linaro.org
Subject: Re: [PATCH v16 5/9] x86: change default load address from 1 MiB to 2 MiB
Date: Wed, 01 Mar 2017 02:05:39 -0700	[thread overview]
Message-ID: <58B69CF3020000780013E8E2@prv-mh.provo.novell.com> (raw)
In-Reply-To: <1487704799-21162-6-git-send-email-daniel.kiper@oracle.com>

>>> On 21.02.17 at 20:19, <daniel.kiper@oracle.com> wrote:
> Subsequent patches introducing relocatable early boot code play with
> page tables using 2 MiB huge pages. If load address is not aligned at
> 2 MiB then code touching such page tables must have special cases for
> start and end of Xen image memory region. So, let's make life easier
> and move default load address from 1 MiB to 2 MiB. This way page table
> code will be nice and easy. Hence, there is a chance that it will be
> less error prone too... :-)))
> 
> Additionally, drop first 2 MiB mapping from Xen image mapping.
> It is no longer needed.

What about the memory allocated for it? Aiui at least in the xen.efi
case there would be a 2Mb chunk left unused, but also never freed.

Jan


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  reply	other threads:[~2017-03-01  9:05 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-21 19:19 [PATCH v16 0/9] x86: multiboot2 protocol support Daniel Kiper
2017-02-21 19:19 ` [PATCH v16 1/9] x86: add " Daniel Kiper
2017-02-21 19:19 ` [PATCH v16 2/9] efi: build xen.gz with EFI code Daniel Kiper
2017-02-21 19:19 ` [PATCH v16 3/9] efi: create new early memory allocator Daniel Kiper
2017-02-21 19:19 ` [PATCH v16 4/9] x86: add multiboot2 protocol support for EFI platforms Daniel Kiper
2017-02-21 19:24   ` Daniel Kiper
2017-02-22 13:42     ` Jan Beulich
2017-02-22 13:46       ` Doug Goldstein
2017-02-22 15:34       ` Daniel Kiper
2017-02-22 17:04         ` Doug Goldstein
2017-03-06 23:39           ` Daniel Kiper
2017-03-08  3:44             ` Konrad Rzeszutek Wilk
2017-03-08 14:17               ` Daniel Kiper
2017-03-08 16:46                 ` Konrad Rzeszutek Wilk
2017-03-09 20:02               ` Doug Goldstein
2017-03-09 22:20                 ` Konrad Rzeszutek Wilk
2017-03-15 11:35                 ` Daniel Kiper
2017-03-15 14:27                   ` Doug Goldstein
2017-03-15 14:38                     ` Daniel Kiper
2017-03-15 14:42                       ` Doug Goldstein
2017-03-15 15:02                         ` Daniel Kiper
2017-03-16 12:12                     ` Daniel Kiper
2017-03-16 13:12                       ` Jan Beulich
2017-03-16 13:35                         ` Daniel Kiper
2017-03-16 13:43                           ` Jan Beulich
2017-03-21 13:05                             ` Daniel Kiper
2017-03-21 13:48                               ` Jan Beulich
2017-03-09 15:24             ` Daniel Kiper
2017-03-09 15:41               ` Andrew Cooper
2017-03-09 15:45               ` Jan Beulich
2017-02-21 19:19 ` [PATCH v16 5/9] x86: change default load address from 1 MiB to 2 MiB Daniel Kiper
2017-03-01  9:05   ` Jan Beulich [this message]
2017-03-01 10:13     ` Daniel Kiper
2017-03-01 10:34       ` Jan Beulich
2017-03-01 10:51         ` Daniel Kiper
2017-03-01 11:21           ` Jan Beulich
2017-03-06 14:51             ` Daniel Kiper
2017-03-06 14:59               ` Jan Beulich
2017-02-21 19:19 ` [PATCH v16 6/9] x86/setup: use XEN_IMG_OFFSET instead of Daniel Kiper
2017-02-21 19:19 ` [PATCH v16 7/9] x86: make Xen early boot code relocatable Daniel Kiper
2017-04-07 11:23   ` Jan Beulich
2017-04-13 14:11     ` Daniel Kiper
2017-04-13 19:43       ` Doug Goldstein
2017-04-14 10:46         ` Daniel Kiper
2017-04-14  1:44       ` Konrad Rzeszutek Wilk
2017-04-14 10:50         ` Daniel Kiper
2017-02-21 19:19 ` [PATCH v16 8/9] x86/boot: rename sym_phys() to sym_offs() Daniel Kiper
2017-02-21 19:19 ` [PATCH v16 9/9] x86: add multiboot2 protocol support for relocatable images Daniel Kiper

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