From: Jeremy Linton
Add the previously defined _probe() and _usage() routines
to the kexec file types table, and build the new module.
It should be noted that this "vmlinuz" support reuses the
"Image" support to actually load the resulting image after
it has been decompressed to a temporary
From: root
As more complicated capsule kernel format occurs like zboot, where the
compressed kernel is stored as a payload. The straight forward
decompression can not meet the demand.
As the first step, on aarch64, reading in the kernel file in a probe
method and decide how to unfold the
Inside zimage_probe(), it uncompresses the kernel and performs some
check, similar to image_probe(). Taking a close look, the uncompressing
has already executed before the image probe is called. What is missing
here is to provide a fd, pointing to an uncompressed kernel image.
This patch creates
From: Jeremy Linton
The kernel EFI stub ZBOOT feature creates a PE that
contains a compressed linux kernel image. The stub
when run in a valid UEFI environment then decompresses
the resulting image and executes it.
Support these image formats with kexec as well to avoid
having to keep an
From: Jeremy Linton
The linux kernel CONFIG_ZBOOT option creates
self decompressing PE kernel images. So this means
that kexec should have a generic understanding of
the format which may be used by multiple arches.
So lets add an arch independent validation
and decompression routine.
Utilize the image load interface to export the kernel fd, which points
to the uncompressed kernel and will be passed to kexec_file_load.
The credit goes to the Dave Young, who contributes the original code.
Signed-off-by: Pingfan Liu
Co-authored-by: Dave Young
To: kexec@lists.infradead.org
Cc:
On Wed, Aug 2, 2023 at 8:33 PM Simon Horman wrote:
>
> On Wed, Aug 02, 2023 at 02:17:57PM +0200, Simon Horman wrote:
> > On Wed, Aug 02, 2023 at 02:16:33PM +0200, Simon Horman wrote:
> > > On Wed, Aug 02, 2023 at 05:53:59PM +0800, Pingfan Liu wrote:
> > > > Hi Simon,
> > > >
> > > > Thanks for
On Wed, 2023-08-02 at 06:58 +0300, Jarkko Sakkinen wrote:
>
> From long description I see zero motivation to ack this change, except
> some heresay about IMA requiring it. Why does IMA need update_cnt and
> why this is not documented to the long description?
The motivation is to detect whether
On 8/1/23 20:58, Jarkko Sakkinen wrote:
On Wed Aug 2, 2023 at 12:01 AM EEST, Tushar Sugandhi wrote:
Thanks for the response Jarkko.
On 8/1/23 12:02, Jarkko Sakkinen wrote:
The short summary is cryptic to say the least.
Do you mean the patch subject line, or the description below?
It is in
On Wed, Aug 02, 2023 at 04:55:27PM +0200, Ard Biesheuvel wrote:
> ... because now, entering via startup_32 is broken, given that it only
> maps the kernel image itself and relies on the #PF handling for
> everything else it accesses, including firmware tables.
>
> AFAICT this also means that
On Wed, 2 Aug 2023 at 15:59, Borislav Petkov wrote:
>
> On Wed, Aug 02, 2023 at 08:40:36AM -0500, Tom Lendacky wrote:
> > Short of figuring out how to map page accesses earlier through the
> > boot_page_fault IDT routine
>
> And you want to do that because?
>
... because now, entering via
On Wed, Aug 02, 2023 at 08:40:36AM -0500, Tom Lendacky wrote:
> Short of figuring out how to map page accesses earlier through the
> boot_page_fault IDT routine
And you want to do that because?
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
On 8/2/23 04:39, Borislav Petkov wrote:
On Wed, Aug 02, 2023 at 04:22:54PM +0800, Tao Liu wrote:
Thanks for the patch! I have tested it on the lenovo machine in the
past few days, no issue found, so the patch tests OK.
Thanks for testing!
Mike, Tom, the below ok this way?
Short of figuring
On Wed, Aug 02, 2023 at 02:17:57PM +0200, Simon Horman wrote:
> On Wed, Aug 02, 2023 at 02:16:33PM +0200, Simon Horman wrote:
> > On Wed, Aug 02, 2023 at 05:53:59PM +0800, Pingfan Liu wrote:
> > > Hi Simon,
> > >
> > > Thanks for the try. Please see the comment below.
> > >
> > > On Tue, Aug 1,
On Wed, Aug 02, 2023 at 02:16:33PM +0200, Simon Horman wrote:
> On Wed, Aug 02, 2023 at 05:53:59PM +0800, Pingfan Liu wrote:
> > Hi Simon,
> >
> > Thanks for the try. Please see the comment below.
> >
> > On Tue, Aug 1, 2023 at 3:00 PM Simon Horman wrote:
> > >
> > > On Mon, Jul 24, 2023 at
On Wed, Aug 02, 2023 at 05:53:59PM +0800, Pingfan Liu wrote:
> Hi Simon,
>
> Thanks for the try. Please see the comment below.
>
> On Tue, Aug 1, 2023 at 3:00 PM Simon Horman wrote:
> >
> > On Mon, Jul 24, 2023 at 10:21:40AM +0800, Pingfan Liu wrote:
> > > From: Jeremy Linton
> > >
> > > The
Hi Simon,
Thanks for the try. Please see the comment below.
On Tue, Aug 1, 2023 at 3:00 PM Simon Horman wrote:
>
> On Mon, Jul 24, 2023 at 10:21:40AM +0800, Pingfan Liu wrote:
> > From: Jeremy Linton
> >
> > The linux kernel CONFIG_ZBOOT option creates
> > self decompressing PE kernel images.
On Wed, Aug 02, 2023 at 04:22:54PM +0800, Tao Liu wrote:
> Thanks for the patch! I have tested it on the lenovo machine in the
> past few days, no issue found, so the patch tests OK.
Thanks for testing!
Mike, Tom, the below ok this way?
---
From: "Borislav Petkov (AMD)"
Date: Sun, 16 Jul 2023
Hi Borislav,
On Sat, Jul 29, 2023 at 12:56 AM Borislav Petkov wrote:
>
> On Thu, Jul 27, 2023 at 07:03:26PM +0800, Tao Liu wrote:
> > Hi Borislav,
> >
> > Sorry for the late response. I spent some time retesting your patch
> > against 6.5.0-rc1 and 6.5.0-rc3, and it is OK. So
> >
> >
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