From: David Vrabel <david.vrabel@citrix.com>
To: Daniel Kiper <daniel.kiper@oracle.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>,
"kexec@lists.infradead.org" <kexec@lists.infradead.org>,
Ian Campbell <Ian.Campbell@citrix.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: [PATCH 5/8] kexec: extend hypercall with improved load/unload ops
Date: Mon, 15 Apr 2013 19:58:30 +0100 [thread overview]
Message-ID: <516C4DD6.4020805@citrix.com> (raw)
In-Reply-To: <20130409210241.GB31533@debian70-amd64.local.net-space.pl>
On 09/04/13 22:02, Daniel Kiper wrote:
> On Mon, Apr 08, 2013 at 07:59:50PM +0100, David Vrabel wrote:
>>
>> +
>> + /* Jump to identity mapped code. */
>> + movq %rdi, %r9
>> + addq $(identity_mapped - kexec_reloc), %r9
>> +
>> + jmp *%r9
>
> jmpq *(identity_mapped - kexec_reloc)(%rdi)
This isn't equivalent. It loads the value at the specified memory
location and jumps to that address.
leaq (identity_mapped - kexec_reloc)(%rdi), %rax
jmpq *%rax
Does the right thing.
David
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next prev parent reply other threads:[~2013-04-15 18:58 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-08 18:59 [PATCHv3 0/8] kexec: extend kexec hypercall for use with pv-ops kernels David Vrabel
2013-04-08 18:59 ` David Vrabel
2013-04-08 18:59 ` [PATCH 1/8] x86: give FIX_EFI_MPF its own fixmap entry David Vrabel
2013-04-08 18:59 ` David Vrabel
2013-04-09 7:27 ` Jan Beulich
2013-04-09 7:27 ` [Xen-devel] " Jan Beulich
2013-04-09 16:15 ` David Vrabel
2013-04-09 16:15 ` David Vrabel
2013-04-08 18:59 ` [PATCH 2/8] xen: make GUEST_HANDLE_64() and uint64_aligned_t available everywhere David Vrabel
2013-04-08 18:59 ` David Vrabel
2013-04-08 18:59 ` [PATCH 3/8] kexec: add public interface for improved load/unload sub-ops David Vrabel
2013-04-08 18:59 ` David Vrabel
2013-04-09 7:32 ` Jan Beulich
2013-04-09 7:32 ` [Xen-devel] " Jan Beulich
2013-04-12 11:56 ` David Vrabel
2013-04-12 13:01 ` Jan Beulich
2013-04-12 13:01 ` [Xen-devel] " Jan Beulich
2013-04-12 11:56 ` David Vrabel
2013-04-08 18:59 ` [PATCH 4/8] kexec: add infrastructure for handling kexec images David Vrabel
2013-04-08 18:59 ` David Vrabel
2013-04-09 7:44 ` Jan Beulich
2013-04-09 7:44 ` [Xen-devel] " Jan Beulich
2013-04-09 16:17 ` David Vrabel
2013-04-10 8:36 ` Jan Beulich
2013-04-10 8:36 ` [Xen-devel] " Jan Beulich
2013-04-09 16:17 ` David Vrabel
2013-04-08 18:59 ` [PATCH 5/8] kexec: extend hypercall with improved load/unload ops David Vrabel
2013-04-08 18:59 ` David Vrabel
2013-04-09 21:02 ` Daniel Kiper
2013-04-15 18:58 ` David Vrabel [this message]
2013-04-16 12:05 ` Daniel Kiper
2013-04-16 12:05 ` Daniel Kiper
2013-04-15 18:58 ` David Vrabel
2013-04-16 14:57 ` David Vrabel
2013-04-16 14:57 ` David Vrabel
2013-04-09 21:02 ` Daniel Kiper
2013-04-08 18:59 ` [PATCH 6/8] xen: kexec crash image when dom0 crashes David Vrabel
2013-04-08 18:59 ` David Vrabel
2013-04-09 21:11 ` Daniel Kiper
2013-04-09 21:11 ` Daniel Kiper
2013-04-08 18:59 ` [PATCH 7/8] libxc: add hypercall buffer arrays David Vrabel
2013-04-08 18:59 ` David Vrabel
2013-04-08 18:59 ` [PATCH 8/8] libxc: add API for kexec hypercall David Vrabel
2013-04-08 18:59 ` David Vrabel
-- strict thread matches above, loose matches on Subject: below --
2013-04-16 17:13 [PATCHv4 0/8] kexec: extend kexec hypercall for use with pv-ops kernels David Vrabel
2013-04-16 17:13 ` [PATCH 5/8] kexec: extend hypercall with improved load/unload ops David Vrabel
2013-04-16 17:13 ` David Vrabel
2013-04-17 8:55 ` [Xen-devel] " Jan Beulich
2013-04-17 10:11 ` David Vrabel
2013-04-17 10:20 ` Jan Beulich
2013-04-17 10:11 ` David Vrabel
2013-04-17 8:55 ` Jan Beulich
2013-04-17 12:51 ` Daniel Kiper
2013-04-17 12:51 ` Daniel Kiper
2013-04-18 16:29 ` David Vrabel
2013-04-19 8:08 ` Daniel Kiper
2013-04-19 8:08 ` Daniel Kiper
2013-04-18 16:29 ` David Vrabel
2013-02-21 17:48 [PATCH 0/8] kexec: extended kexec hypercall for use with pv-ops kernels David Vrabel
2013-02-21 17:48 ` [PATCH 5/8] kexec: extend hypercall with improved load/unload ops David Vrabel
2013-02-21 22:41 ` Daniel Kiper
2013-02-21 22:41 ` Daniel Kiper
2013-02-22 8:42 ` Jan Beulich
2013-02-22 8:42 ` [Xen-devel] " Jan Beulich
2013-02-22 11:54 ` David Vrabel
2013-02-22 11:54 ` [Xen-devel] " David Vrabel
2013-02-22 13:11 ` Jan Beulich
2013-03-08 11:23 ` Daniel Kiper
2013-03-08 11:40 ` David Vrabel
2013-03-08 12:21 ` Daniel Kiper
2013-03-08 14:01 ` David Vrabel
2013-03-08 15:23 ` Daniel Kiper
2013-03-08 15:23 ` Daniel Kiper
2013-03-08 17:29 ` Andrew Cooper
2013-03-08 21:45 ` Daniel Kiper
2013-03-08 21:45 ` [Xen-devel] " Daniel Kiper
2013-03-08 23:38 ` Andrew Cooper
2013-03-11 11:17 ` Daniel Kiper
2013-03-11 11:17 ` [Xen-devel] " Daniel Kiper
2013-03-11 13:21 ` David Vrabel
2013-03-11 13:30 ` Daniel Kiper
2013-03-11 13:43 ` David Vrabel
2013-03-11 14:13 ` Daniel Kiper
2013-03-11 14:27 ` Andrew Cooper
2013-03-11 20:45 ` Daniel Kiper
2013-03-11 21:18 ` Andrew Cooper
2013-03-12 11:17 ` Daniel Kiper
2013-03-11 21:18 ` Andrew Cooper
2013-03-11 20:45 ` Daniel Kiper
2013-03-11 14:27 ` Andrew Cooper
2013-03-11 14:13 ` Daniel Kiper
2013-03-11 13:43 ` David Vrabel
2013-03-11 13:30 ` Daniel Kiper
2013-03-11 13:21 ` David Vrabel
2013-03-08 23:38 ` Andrew Cooper
2013-03-08 14:01 ` David Vrabel
2013-03-08 12:21 ` Daniel Kiper
2013-03-08 11:40 ` David Vrabel
2013-03-08 11:23 ` Daniel Kiper
2013-03-12 11:36 ` Daniel Kiper
2013-03-12 11:36 ` Daniel Kiper
2013-02-21 17:48 ` David Vrabel
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