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>
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>
They are really depends on CPU we're running on.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
* The following files goes into the directory arch/x86/include/asm unmodified:
- include/atomic.h,
- include/linkage.h,
- include/memcpy_64.h,
- include/types.h,
- include/bitops.h,
- pie/parasite-head-x86-64.S,
- include/processor-flags.h,
- include/syscall-x86-64.def.
* Changed include directives in the source files that include the headers
listed above.
* Modified build scripts to reflect the source moves.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Make them look like __CR_<smth>_H__ with
sed -e '1,2s/#\(ifndef\|define\) _\?_\?\(CR_\)\?/#\1 __CR_/' -e '1,2s/_H_\?_\?.*$/_H__/'
on every header file.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This patch add ability to test /proc/cpuinfo data
we're interested in at the moment.
The code provides the following functionality
- cpu_init, to parse cpuinfo and check if the
host cpu we're running on is suitable enough
for FPU checkpoint/restore. If FPU present then
there must be at least fxsave capability present
- cpu_set_feature/cpu_has_feature helpers which
provides to test certain bits and set them where
needed (we need to set bits when parse cpuinfo)
Note, we reserve space for all cpuinfo bits known
by the kernel at moment, while use only three FPU
related bits for a while. This is done because we might
need to use or find out other features in future.
After all it's just 40 bytes of memory needed to keep
all possible bits.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
