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From: Daniel De Graaf <dgdegra@tycho.nsa.gov>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	xen-devel@lists.xenproject.org, andrew.cooper3@citrix.com,
	konrad@kernel.org, mpohlack@amazon.de, ross.lagerwall@citrix.com,
	sasha.levin@citrix.com, jinsong.liu@alibaba-inc.com,
	Ian Jackson <ian.jackson@eu.citrix.com>,
	Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
	Ian Campbell <ian.campbell@citrix.com>,
	Wei Liu <wei.liu2@citrix.com>,
	Stefano Stabellini <stefano.stabellini@citrix.com>,
	Keir Fraser <keir@xen.org>, Jan Beulich <jbeulich@suse.com>,
	xen-devel@lists.xen.org
Subject: Re: [PATCH v3 13/23] XENVER_build_id: Provide ld-embedded build-ids (v10)
Date: Fri, 12 Feb 2016 16:52:53 -0500	[thread overview]
Message-ID: <56BE5435.2080904@tycho.nsa.gov> (raw)
In-Reply-To: <1455300361-13092-14-git-send-email-konrad.wilk@oracle.com>

On 12/02/16 13:05, Konrad Rzeszutek Wilk wrote:
> The mechanism to get this is via the XENVER hypercall and
> we add a new sub-command to retrieve the binary build-id
> called XENVER_build_id. The sub-hypercall parameter
> allows an arbitrary size (the buffer and len is provided
> to the hypervisor). A NULL parameter will probe the hypervisor
> for the length of the build-id.
>
> One can also retrieve the value of the build-id by doing
> 'readelf -n xen-syms'.
>
> For EFI builds we re-use the same build-id that the xen-syms
> was built with.
>
> The version of ld that first implemented --build-id is v2.18.
> Hence we check for that or later version - if older version
> found we do not build the hypervisor with the build-id
> (and the return code is -ENODATA for that case).
>
> For x86 we have two binaries - the xen-syms and the xen - an
> smaller version with lots of sections removed. To make it possible
> for readelf -n xen we also modify mkelf32 and xen.lds.S to include
> the PT_NOTE ELF section.
>
> The EFI binary is more complicated. Having any non-recognizable
> sections (.note, .data.note, etc) causes the boot to hang.
> Moving the .note in the .data section makes it work. It is also
> worth noting that the PE/COFF does not have any "comment"
> sections to the author.
>
> Suggested-by: Andrew Cooper <andrew.cooper3@citrix.com>
> Signed-off-by: Martin Pohlack <mpohlack@amazon.de>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>

  reply	other threads:[~2016-02-12 21:53 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-12 18:05 [PATCH v3] xSplice v1 implementation and design Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 01/23] xen/xsplice: Hypervisor implementation of XEN_XSPLICE_op (v10) Konrad Rzeszutek Wilk
2016-02-12 20:11   ` Andrew Cooper
2016-02-12 20:40     ` Konrad Rzeszutek Wilk
2016-02-12 20:53       ` Andrew Cooper
2016-02-15  8:16       ` Jan Beulich
2016-02-19 19:36     ` Konrad Rzeszutek Wilk
2016-02-19 19:43       ` Andrew Cooper
2016-02-12 18:05 ` [PATCH v3 02/23] libxc: Implementation of XEN_XSPLICE_op in libxc (v5) Konrad Rzeszutek Wilk
2016-02-15 12:35   ` Wei Liu
2016-02-19 20:04     ` Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 03/23] xen-xsplice: Tool to manipulate xsplice payloads (v4) Konrad Rzeszutek Wilk
2016-02-15 12:59   ` Wei Liu
2016-02-19 20:46     ` Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 04/23] elf: Add relocation types to elfstructs.h Konrad Rzeszutek Wilk
2016-02-12 20:13   ` Andrew Cooper
2016-02-15  8:34   ` Jan Beulich
2016-02-19 21:05     ` Konrad Rzeszutek Wilk
2016-02-22 10:17       ` Jan Beulich
2016-02-22 15:19       ` Ross Lagerwall
2016-02-12 18:05 ` [PATCH v3 05/23] xsplice: Add helper elf routines (v4) Konrad Rzeszutek Wilk
2016-02-12 20:24   ` Andrew Cooper
2016-02-12 20:47     ` Konrad Rzeszutek Wilk
2016-02-12 20:52       ` Andrew Cooper
2016-02-12 18:05 ` [PATCH v3 06/23] xsplice: Implement payload loading (v4) Konrad Rzeszutek Wilk
2016-02-12 20:48   ` Andrew Cooper
2016-02-19 22:03     ` Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 07/23] xsplice: Implement support for applying/reverting/replacing patches. (v5) Konrad Rzeszutek Wilk
2016-02-16 19:11   ` Andrew Cooper
2016-02-17  8:58     ` Ross Lagerwall
2016-02-17 10:50     ` Jan Beulich
2016-02-19  9:30     ` Ross Lagerwall
2016-02-23 20:41     ` Konrad Rzeszutek Wilk
2016-02-23 20:53       ` Konrad Rzeszutek Wilk
2016-02-23 20:57       ` Konrad Rzeszutek Wilk
2016-02-23 21:10       ` Andrew Cooper
2016-02-24  9:31         ` Jan Beulich
2016-02-22 15:00   ` Ross Lagerwall
2016-02-22 17:06     ` Ross Lagerwall
2016-02-23 20:47       ` Konrad Rzeszutek Wilk
2016-02-23 20:43     ` Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 08/23] x86/xen_hello_world.xsplice: Test payload for patching 'xen_extra_version'. (v2) Konrad Rzeszutek Wilk
2016-02-16 11:31   ` Ross Lagerwall
2016-02-12 18:05 ` [PATCH v3 09/23] xsplice: Add support for bug frames. (v4) Konrad Rzeszutek Wilk
2016-02-16 19:35   ` Andrew Cooper
2016-02-24 16:22     ` Konrad Rzeszutek Wilk
2016-02-24 16:30       ` Andrew Cooper
2016-02-24 16:26     ` Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 10/23] xsplice: Add support for exception tables. (v2) Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 11/23] xsplice: Add support for alternatives Konrad Rzeszutek Wilk
2016-02-16 19:41   ` Andrew Cooper
2016-02-12 18:05 ` [PATCH v3 12/23] xsm/xen_version: Add XSM for the xen_version hypercall (v8) Konrad Rzeszutek Wilk
2016-02-12 21:52   ` Daniel De Graaf
2016-02-12 18:05 ` [PATCH v3 13/23] XENVER_build_id: Provide ld-embedded build-ids (v10) Konrad Rzeszutek Wilk
2016-02-12 21:52   ` Daniel De Graaf [this message]
2016-02-16 20:09   ` Andrew Cooper
2016-02-16 20:22     ` Konrad Rzeszutek Wilk
2016-02-16 20:26       ` Andrew Cooper
2016-02-16 20:40         ` Konrad Rzeszutek Wilk
2016-02-24 18:52     ` Konrad Rzeszutek Wilk
2016-02-24 19:13       ` Andrew Cooper
2016-02-24 20:54         ` Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 14/23] libxl: info: Display build_id of the hypervisor Konrad Rzeszutek Wilk
2016-02-15 12:45   ` Wei Liu
2016-02-12 18:05 ` [PATCH v3 15/23] xsplice: Print build_id in keyhandler Konrad Rzeszutek Wilk
2016-02-16 20:13   ` Andrew Cooper
2016-02-12 18:05 ` [PATCH v3 16/23] xsplice: basic build-id dependency checking Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 17/23] xsplice: Print dependency and payloads build_id in the keyhandler Konrad Rzeszutek Wilk
2016-02-16 20:20   ` Andrew Cooper
2016-02-17 11:10     ` Jan Beulich
2016-02-24 21:54       ` Konrad Rzeszutek Wilk
2016-02-25  8:47         ` Jan Beulich
2016-02-12 18:05 ` [PATCH v3 18/23] xsplice: Prevent duplicate payloads to be loaded Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 19/23] xsplice, symbols: Implement symbol name resolution on address. (v2) Konrad Rzeszutek Wilk
2016-02-22 14:57   ` Ross Lagerwall
2016-02-12 18:05 ` [PATCH v3 20/23] x86, xsplice: Print payload's symbol name and module in backtraces Konrad Rzeszutek Wilk
2016-02-12 18:05 ` [PATCH v3 21/23] xsplice: Add support for shadow variables Konrad Rzeszutek Wilk
2016-03-07  7:40   ` Martin Pohlack
2016-03-15 18:02     ` Konrad Rzeszutek Wilk
2016-03-07 18:52   ` Martin Pohlack
2016-02-12 18:06 ` [PATCH v3 22/23] xsplice: Add hooks functions and other macros Konrad Rzeszutek Wilk
2016-02-12 18:06 ` [PATCH v3 23/23] xsplice, hello_world: Use the XSPLICE_[UN|]LOAD_HOOK hooks for two functions Konrad Rzeszutek Wilk
2016-02-12 21:57 ` [PATCH v3] xSplice v1 implementation and design Konrad Rzeszutek Wilk
2016-02-12 21:57   ` [PATCH v3 MISSING/23] xsplice: Design document (v7) Konrad Rzeszutek Wilk
2016-02-18 16:20     ` Jan Beulich
2016-02-19 18:36       ` Konrad Rzeszutek Wilk

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