From: Dave Young <dyoung@redhat.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>,
kexec@lists.infradead.org, Eric Biederman <ebiederm@xmission.com>,
Jean Delvare <jdelvare@suse.de>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 2/2] firmware: dmi_scan: Pass dmi_entry_point to kexec'ed kernel
Date: Sat, 17 Dec 2016 18:50:59 +0800 [thread overview]
Message-ID: <20161217105059.GA6922@dhcp-128-65.nay.redhat.com> (raw)
In-Reply-To: <1481890738.9552.70.camel@linux.intel.com>
On 12/16/16 at 02:18pm, Andy Shevchenko wrote:
> On Fri, 2016-12-16 at 10:32 +0800, Dave Young wrote:
> > On 12/15/16 at 12:28pm, Jean Delvare wrote:
> > > Hi Andy,
> > >
> > > On Fri, 2 Dec 2016 21:54:16 +0200, Andy Shevchenko wrote:
> > > > Until now kexec'ed kernel has no clue where to look for DMI entry
> > > > point.
> > > >
> > > > Pass it via kernel command line parameter in the same way as it's
> > > > done for ACPI
> > > > RSDP.
> > >
> > > I am no kexec expert but this confuses me. Shouldn't the second
> > > kernel
> > > have access to the EFI systab as the first kernel does? It includes
> > > many more pointers than just ACPI and DMI tables, and it would seem
> > > inconvenient to have to pass all these addresses individually
> > > explicitly.
> >
> > Yes, in modern linux kernel, kexec has the support for EFI, I think it
> > should work naturally at least in x86_64.
>
> Thanks for this good news!
>
> Unfortunately Intel Galileo is 32-bit platform.
Maybe you can try use efi=noruntime kernel parameter in kexec/kdump
kernel, see if it works or not.
>
> --
> Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Intel Finland Oy
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next prev parent reply other threads:[~2016-12-17 10:51 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20161202195416.58953-1-andriy.shevchenko@linux.intel.com>
[not found] ` <20161202195416.58953-3-andriy.shevchenko@linux.intel.com>
2016-12-15 11:28 ` [PATCH v1 2/2] firmware: dmi_scan: Pass dmi_entry_point to kexec'ed kernel Jean Delvare
2016-12-16 2:32 ` Dave Young
2016-12-16 12:18 ` Andy Shevchenko
2016-12-16 13:33 ` Jean Delvare
2016-12-17 10:57 ` Dave Young
2019-09-06 19:00 ` Andy Shevchenko
[not found] ` <20200120121927.GJ32742@smile.fi.intel.com>
[not found] ` <87a76i9ksr.fsf@x220.int.ebiederm.org>
[not found] ` <CAHp75VdjwWfqHtJ3n-UK_n5nzpgcpERbM+_9-Z3FrjJx7nHQzQ@mail.gmail.com>
[not found] ` <CAKv+Gu-sVSWNYHEjzjOfbEryOR_XruwH=qQphq4uTXMLPK18tw@mail.gmail.com>
[not found] ` <20200121153730.GZ32742@smile.fi.intel.com>
[not found] ` <87h80o4tls.fsf@x220.int.ebiederm.org>
2020-05-21 17:39 ` Andy Shevchenko
2021-06-02 8:37 ` Andy Shevchenko
2021-06-02 8:53 ` Andy Shevchenko
2016-12-17 10:50 ` Dave Young [this message]
2021-06-02 8:42 ` [PATCH v1 0/2] firmware: dmi_scan: Make it work in " Andy Shevchenko
2021-06-02 8:53 ` Andy Shevchenko
2021-06-05 7:51 ` Dave Young
2021-06-07 16:22 ` Andy Shevchenko
2021-06-07 17:18 ` Andy Shevchenko
2021-06-08 12:25 ` Dave Young
2021-06-08 12:38 ` Andy Shevchenko
2021-06-09 11:55 ` Dave Young
2021-06-12 4:40 ` Dave Young
2021-06-14 15:38 ` Andy Shevchenko
2021-06-14 17:07 ` Andy Shevchenko
2021-06-14 17:27 ` Andy Shevchenko
2021-07-19 7:53 ` Ard Biesheuvel
2021-07-19 8:25 ` Andy Shevchenko
2021-10-06 16:28 ` Andy Shevchenko
2021-10-07 7:20 ` Ard Biesheuvel
2021-10-07 7:23 ` Andy Shevchenko
2021-10-17 13:31 ` Ard Biesheuvel
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