From: Dave Young <dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Matt Fleming <matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
Cc: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>,
X86 ML <x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Borislav Petkov <bp-l3A5Bk7waGM@public.gmane.org>,
Matthew Garrett <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>,
"H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
James Bottomley
<James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>,
Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
fwts-devel-nLRlyDuq1AZFpShjVBNYrg@public.gmane.org
Subject: Re: [PATCH 12/12] EFI: Runtime services virtual mapping
Date: Fri, 11 Oct 2013 09:42:34 -0400 (EDT) [thread overview]
Message-ID: <643121905.4545046.1381498954428.JavaMail.root@redhat.com> (raw)
In-Reply-To: <20131011102706.GE12321-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
Matt,
The kernel I referring is the boot kernel aka the 1st kernel,
the boot loader is grub2 from Fedora 19.
[sorry for top reply because of using webmail]
----- Original Message -----
From: "Matt Fleming" <matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
To: "Dave Young" <dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: "Borislav Petkov" <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>, "X86 ML" <x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, "LKML" <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "Borislav Petkov" <bp-l3A5Bk7waGM@public.gmane.org>, "Matthew Garrett" <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>, "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>, "James Bottomley" <James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>, "Vivek Goyal" <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, fwts-devel-nLRlyDuq1AZFpShjVBNYrg@public.gmane.org
Sent: Friday, October 11, 2013 6:27:06 PM
Subject: Re: [PATCH 12/12] EFI: Runtime services virtual mapping
On Fri, 11 Oct, at 02:24:37PM, Dave Young wrote:
> For the boot efi_reserve_boot_services code, it's mainly for the
> SetVirtualAddressMap callback use, so boot regions should not be reused
> before SetVirtualAddressMap, but the overlapping happens before the
> efi_reserve_boot_services, isn't it a problem?
Hang on, which kernel are you referring to here? The boot kernel or the
kexec'd kernel? I thought you were saying you noticed the overlap when
running in the second (kexec'd) kernel?
The only reason that you would see this overlap in the first (boot)
kernel is if the bootloader messed up and allocated the kernel text as
EfiBootServicesCode/Data. I'd like to believe no bootloaders are still
doing that.
--
Matt Fleming, Intel Open Source Technology Center
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next prev parent reply other threads:[~2013-10-11 13:42 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-19 14:54 [PATCH 00/11] EFI runtime services virtual mapping Borislav Petkov
[not found] ` <1379602494-26684-1-git-send-email-bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
2013-09-19 14:54 ` [PATCH 01/11] efi: Simplify EFI_DEBUG Borislav Petkov
2013-09-19 14:54 ` [PATCH 02/11] efi: Remove EFI_PAGE_SHIFT and EFI_PAGE_SIZE Borislav Petkov
[not found] ` <1379602494-26684-3-git-send-email-bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
2013-09-20 10:42 ` Matt Fleming
2013-09-21 15:21 ` Leif Lindholm
2013-09-21 15:41 ` Borislav Petkov
2013-09-21 15:50 ` Borislav Petkov
2013-09-21 16:01 ` Leif Lindholm
[not found] ` <20130921160121.GI2737-GZEopFhza0F985/tl1ce8aaDwS/vmuI7@public.gmane.org>
2013-09-21 16:03 ` Borislav Petkov
[not found] ` <20130921154143.GC1587-fF5Pk5pvG8Y@public.gmane.org>
2013-09-21 15:59 ` Leif Lindholm
2013-09-19 14:54 ` [PATCH 05/11] x86, pageattr: Add a PUD pagetable populating function Borislav Petkov
2013-09-19 14:54 ` [PATCH 09/11] x86, pageattr: Add last levels of error path Borislav Petkov
2013-09-20 7:29 ` [PATCH 00/11] EFI runtime services virtual mapping Dave Young
[not found] ` <20130920072904.GA21922-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-09-20 8:19 ` Dave Young
[not found] ` <20130920081940.GC21922-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-09-20 9:33 ` Borislav Petkov
2013-09-20 10:07 ` Dave Young
2013-09-20 9:05 ` Borislav Petkov
[not found] ` <20130920090544.GA9574-fF5Pk5pvG8Y@public.gmane.org>
2013-09-20 9:44 ` Matt Fleming
2013-09-20 9:49 ` Matt Fleming
[not found] ` <20130920094913.GG4785-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-09-20 10:02 ` Borislav Petkov
2013-09-20 11:51 ` Dave Young
2013-09-20 12:29 ` Matt Fleming
[not found] ` <20130920122915.GB21381-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-09-20 14:04 ` Dave Young
2013-09-19 14:54 ` [PATCH 03/11] x86, pageattr: Lookup address in an arbitrary PGD Borislav Petkov
2013-09-19 14:54 ` [PATCH 04/11] x86, pageattr: Add a PGD pagetable populating function Borislav Petkov
2013-09-19 14:54 ` [PATCH 06/11] x86, pageattr: Add a PMD " Borislav Petkov
2013-09-19 14:54 ` [PATCH 07/11] x86, pageattr: Add a PTE " Borislav Petkov
2013-09-19 14:54 ` [PATCH 08/11] x86, pageattr: Add a PUD error unwinding path Borislav Petkov
2013-09-19 14:54 ` [PATCH 10/11] x86, cpa: Map in an arbitrary pgd Borislav Petkov
2013-09-19 14:54 ` [PATCH 11/11] EFI: Runtime services virtual mapping Borislav Petkov
[not found] ` <1379602494-26684-12-git-send-email-bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
2013-09-21 11:39 ` [PATCH -v2] " Borislav Petkov
2013-09-23 5:47 ` Dave Young
[not found] ` <20130923054741.GC7007-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-09-23 6:29 ` Borislav Petkov
[not found] ` <20130923062947.GA2527-fF5Pk5pvG8Y@public.gmane.org>
2013-09-23 7:08 ` Dave Young
[not found] ` <20130921113929.GB1587-fF5Pk5pvG8Y@public.gmane.org>
2013-09-22 12:35 ` Dave Young
[not found] ` <20130922123515.GA7476-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-09-22 13:37 ` Borislav Petkov
[not found] ` <20130922133722.GC28718-fF5Pk5pvG8Y@public.gmane.org>
2013-09-22 14:00 ` Dave Young
[not found] ` <20130922140038.GB7476-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-09-22 14:31 ` Dave Young
2013-09-22 15:27 ` H. Peter Anvin
[not found] ` <1ba7eca6-419c-4181-9927-9ba0927a6abf-2ueSQiBKiTY7tOexoI0I+QC/G2K4zDHf@public.gmane.org>
2013-09-22 16:38 ` Borislav Petkov
2013-09-23 5:45 ` Dave Young
2013-09-24 2:52 ` Dave Young
[not found] ` <20130924025209.GA5561-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-09-24 3:06 ` H. Peter Anvin
[not found] ` <2d27a1bc-eabf-4d45-8303-27ae58511b11-2ueSQiBKiTY7tOexoI0I+QC/G2K4zDHf@public.gmane.org>
2013-09-24 4:57 ` Dave Young
[not found] ` <20130924045705.GB5561-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-09-24 4:58 ` Dave Young
[not found] ` <20130924045818.GC5561-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-09-24 5:23 ` Dave Young
2013-09-24 8:57 ` Dave Young
2013-09-24 9:43 ` Borislav Petkov
[not found] ` <bd9528a453bce9b52ad4be75dcc0f034.squirrel-Fq0NhQX/+7ild1e1puMNDg@public.gmane.org>
2013-09-24 10:01 ` Dave Young
2013-09-24 12:45 ` Dave Young
2013-10-02 10:04 ` Borislav Petkov
[not found] ` <20131002100426.GB20568-fF5Pk5pvG8Y@public.gmane.org>
2013-10-02 15:43 ` H. Peter Anvin
[not found] ` <524C3F38.6050507-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-10-02 17:05 ` Borislav Petkov
[not found] ` <20131002170522.GA20647-fF5Pk5pvG8Y@public.gmane.org>
2013-10-02 17:32 ` H. Peter Anvin
[not found] ` <524C58A3.4090704-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-10-02 18:42 ` Borislav Petkov
[not found] ` <20131002184229.GE20568-fF5Pk5pvG8Y@public.gmane.org>
2013-10-02 18:46 ` H. Peter Anvin
[not found] ` <524C6A14.40905-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-10-04 9:42 ` Borislav Petkov
[not found] ` <20131004094247.GA6796-K5JNixvcfoxupOikMc4+xw@public.gmane.org>
2013-10-04 14:43 ` H. Peter Anvin
[not found] ` <89e0284e-89b5-42ad-8120-128ef1bf0152-2ueSQiBKiTY7tOexoI0I+QC/G2K4zDHf@public.gmane.org>
2013-10-04 14:50 ` Borislav Petkov
2013-09-23 8:45 ` Borislav Petkov
2013-09-25 9:24 ` Borislav Petkov
2013-10-08 16:45 ` [PATCH 00/11] EFI runtime " Borislav Petkov
[not found] ` <20131008164551.GB16793-fF5Pk5pvG8Y@public.gmane.org>
2013-10-08 16:47 ` [PATCH 11/12] efi: Add an efi= kernel command line parameter Borislav Petkov
2013-10-28 11:02 ` Matt Fleming
2013-10-28 11:10 ` Borislav Petkov
2013-10-08 16:48 ` [PATCH 12/12] EFI: Runtime services virtual mapping Borislav Petkov
[not found] ` <20131008164831.GD16793-fF5Pk5pvG8Y@public.gmane.org>
2013-10-10 8:06 ` Dave Young
2013-10-10 8:14 ` Dave Young
[not found] ` <20131010081434.GB3692-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-10-10 8:58 ` Borislav Petkov
[not found] ` <20131010085827.GA9929-fF5Pk5pvG8Y@public.gmane.org>
2013-10-10 12:34 ` Matt Fleming
[not found] ` <20131010123453.GA12321-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-10-11 6:24 ` Dave Young
[not found] ` <20131011062437.GA14115-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-10-11 7:41 ` Borislav Petkov
[not found] ` <20131011074144.GA18719-fF5Pk5pvG8Y@public.gmane.org>
2013-10-12 7:54 ` Dave Young
[not found] ` <20131012075443.GD7550-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-10-12 10:13 ` Matt Fleming
[not found] ` <20131012101308.GI12321-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-10-12 10:30 ` Borislav Petkov
[not found] ` <20131012103054.GA13739-fF5Pk5pvG8Y@public.gmane.org>
2013-10-13 3:11 ` Dave Young
[not found] ` <20131013031126.GB1914-4/PLUo9XfK+sDdueE5tM26fLeoKvNuZc@public.gmane.org>
2013-10-13 9:25 ` Borislav Petkov
[not found] ` <20131013092521.GA22866-fF5Pk5pvG8Y@public.gmane.org>
2013-10-14 15:58 ` Borislav Petkov
[not found] ` <20131014155851.GJ4009-fF5Pk5pvG8Y@public.gmane.org>
2013-10-21 12:47 ` Dave Young
[not found] ` <20131021124739.GA4515-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-10-21 13:37 ` Borislav Petkov
[not found] ` <20131021133741.GA5716-K5JNixvcfoxupOikMc4+xw@public.gmane.org>
2013-10-21 15:04 ` Dave Young
[not found] ` <20131021150426.GB4515-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-10-22 11:18 ` Borislav Petkov
[not found] ` <20131022111857.GA10660-K5JNixvcfoxupOikMc4+xw@public.gmane.org>
2013-10-23 2:17 ` Dave Young
[not found] ` <20131023021730.GE4594-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-10-23 12:25 ` Borislav Petkov
[not found] ` <20131023122531.GA15848-K5JNixvcfoxupOikMc4+xw@public.gmane.org>
2013-10-23 12:37 ` Matthew Garrett
2013-10-23 12:51 ` Dave Young
[not found] ` <20131023125131.GA5552-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-10-23 13:11 ` Borislav Petkov
2013-10-26 15:50 ` Matt Fleming
2013-10-13 3:06 ` Dave Young
2013-10-11 10:27 ` Matt Fleming
[not found] ` <20131011102706.GE12321-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-10-11 13:42 ` Dave Young [this message]
[not found] ` <643121905.4545046.1381498954428.JavaMail.root-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-10-12 2:14 ` Dave Young
2013-10-14 15:57 ` Peter Jones
2013-10-16 6:27 ` Dave Young
2013-10-28 11:22 ` Matt Fleming
[not found] ` <20131028112246.GK1982-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-10-28 16:00 ` Borislav Petkov
2013-10-29 6:47 ` Dave Young
[not found] ` <20131029064720.GA16009-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-10-29 9:40 ` Borislav Petkov
[not found] ` <20131029094033.GA10972-fF5Pk5pvG8Y@public.gmane.org>
2013-10-30 9:32 ` Dave Young
[not found] ` <20131030093227.GA5791-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-10-30 10:45 ` Borislav Petkov
[not found] ` <20131030104526.GA13290-fF5Pk5pvG8Y@public.gmane.org>
2013-10-31 7:07 ` Dave Young
2013-10-14 13:04 ` [PATCH 00/11] EFI runtime " Matt Fleming
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