cpuinfo: x86 -- Drop redundant cpu_has helper

It's simply a wrapper over cpu_has_feature,
so use this it directly instead.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
cpuinfo: Drop cpu_set_feature from exporting

It's redundant, should be cpu local.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
opt: cpu-cap -- Make it as optional_argument

This slightly changes the visible API, but i think it's safe now.
The idea behind it to make single --cpu-cap to indicate "--cpu-cap all".

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
opt: cpu-cap -- Introduce "none" and "cpuinfo" arguments

They will serve to choose capability level when migrating
images between various hardware nodes.

Note it's bare functionality introduced in this commit,
the real implementation is in next patches.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
cpuinfo: Update documentation for --cpu-cap

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
cpuinfo: x86 -- Add feature bits definitions

We will need them to carry CPU's caps.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
cpuinfo: x86 -- Add cpuid helpers

We will use them to fetch cpu caps.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
cpuinfo: x86 -- Rework cpuinfo features fetching

Instead of parsing procfs lets use native cpuid(), it's a way faster.
The dark side is that the kernel may disable some of features via
bootline options even if they are present on hardware but for us
it's fine -- we will be testing hardware cpu for features anyway.

The X86_FEATURE_ bits are gathered from two sources: linux kernel
and cpu specifications.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
cpuinfo: x86 -- Add protobuf entry

At the moment only x86 is covered, ARM needs own handler.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
cpuinfo: x86 -- Add dump and validation of cpuinfo image, v2

On Wed, Oct 01, 2014 at 04:57:40PM +0400, Pavel Emelyanov wrote:
> On 10/01/2014 01:07 AM, Cyrill Gorcunov wrote:
> > On Tue, Sep 30, 2014 at 09:18:53PM +0400, Cyrill Gorcunov wrote:
> >> If a user requested criu to dump cpuinfo image then we
> >> write one on dump and verify on restore. At the moment
> >> we require all cpu feature bits to match the destination
> >> cpu in a sake of simplicity, but in future we need deps
> >> engine which would filer out bits and test if cpu we're
> >> restoring on is more capable than one we were dumping at
> >> allowing to proceed restore procedure.
> >>
> >> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
> >
> > Updated to new img format

Something like attached?

>From 59272a9514311e6736cddee08d5f88aa95d49189 Mon Sep 17 00:00:00 2001
From: Cyrill Gorcunov <gorcunov@openvz.org>
Date: Thu, 25 Sep 2014 16:04:10 +0400
Subject: [PATCH] cpuinfo: x86 -- Add dump and validation of cpuinfo image

If a user requested criu to dump cpuinfo image then we
write one on dump and verify on restore. At the moment
we require all cpu feature bits to match the destination
cpu in a sake of simplicity, but in future we need deps
engine which would filer out bits and test if cpu we're
restoring on is more capable than one we were dumping at
allowing to proceed restore procedure.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
cpuinfo: Add "cpuinfo [dump|check]" commands, v2

On Wed, Oct 01, 2014 at 05:51:09PM +0400, Pavel Emelyanov wrote:
> > Yes, what you've been expecting?
>
> if (!strcmp(argv[optind]))
> 	return cpu_cap_check()
>
> or smth like this.

updated. So if it become confusing -- feel free to merge [1;9] and
ping me to resend the rest, or pick up from attachements.

>From 6af96ff63ac82f9566c3cba9c116dc67698c9797 Mon Sep 17 00:00:00 2001
From: Cyrill Gorcunov <gorcunov@openvz.org>
Date: Tue, 30 Sep 2014 18:33:40 +0400
Subject: [PATCH] cpuinfo: Add "cpuinfo [dump|check]" commands

They allow to validate cpuinfo information
without running complete dump/restore actions.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
cpuinfo: rpc -- Add CPUINFO_DUMP/CPUINFO_CHECK commands, v2

On Tue, Sep 30, 2014 at 09:18:55PM +0400, Cyrill Gorcunov wrote:
> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>

Updated

>From fea15362291a525f4b00f7e070968c6890cc831e Mon Sep 17 00:00:00 2001
From: Cyrill Gorcunov <gorcunov@openvz.org>
Date: Fri, 19 Sep 2014 17:56:11 +0400
Subject: [PATCH 12/12] cpuinfo: rpc -- Add CPUINFO_DUMP/CPUINFO_CHECK commands

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>