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From: Vivek Goyal <vgoyal@redhat.com>
To: Andrea Adami <andrea.adami@gmail.com>
Cc: matthew.garrett@nebula.com, Greg KH <greg@kroah.com>,
	d.kasatkin@samsung.com, kexec@lists.infradead.org,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	linux-security-module@vger.kernel.org, ebiederm@xmission.com,
	"H. Peter Anvin" <hpa@zytor.com>,
	akpm@linux-foundation.org, Mimi Zohar <zohar@linux.vnet.ibm.com>
Subject: Re: [PATCH 00/16] [RFC PATCH] Signed kexec support
Date: Mon, 23 Sep 2013 13:15:15 -0400	[thread overview]
Message-ID: <20130923171515.GD10812@redhat.com> (raw)
In-Reply-To: <CAAQYJAuXy2up+XTE1AAgOg2u7t=LqOFyPv96RP+1avLC45UDJA@mail.gmail.com>

On Wed, Sep 18, 2013 at 04:51:21PM +0200, Andrea Adami wrote:
> Hello,
> 
> as one of the developers of kexecboot, a kexec-based
> linux-as-bootloader, I'm following with interest this thread.
> FWIW since the beginning we are compiling kexec-tools statically
> against klibc for size constraints.

Hi Andrea,

Good to know about kexecboot.

FWIW, recently we discussed the kexec/kdump with secureboot issue
at Linux Plumbers and Greg KH suggested that it will be simpler if
we implement a new system call which does the job of loading new
kernel. Effectively that means reimplementing /sbin/kexec in kernel.
This will also mean maintaining two code bases for some time and
slowly deprecating one over a period of time.

I will probably start with something  small and post proof of concept
patches for review and see how does that go. This is just heads up 
on what I am planning to do.

Thanks
Vivek

_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec

WARNING: multiple messages have this Message-ID (diff)
From: Vivek Goyal <vgoyal@redhat.com>
To: Andrea Adami <andrea.adami@gmail.com>
Cc: Mimi Zohar <zohar@linux.vnet.ibm.com>,
	matthew.garrett@nebula.com, Greg KH <greg@kroah.com>,
	d.kasatkin@samsung.com, kexec@lists.infradead.org,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	linux-security-module@vger.kernel.org, ebiederm@xmission.com,
	"H. Peter Anvin" <hpa@zytor.com>,
	akpm@linux-foundation.org
Subject: Re: [PATCH 00/16] [RFC PATCH] Signed kexec support
Date: Mon, 23 Sep 2013 13:15:15 -0400	[thread overview]
Message-ID: <20130923171515.GD10812@redhat.com> (raw)
In-Reply-To: <CAAQYJAuXy2up+XTE1AAgOg2u7t=LqOFyPv96RP+1avLC45UDJA@mail.gmail.com>

On Wed, Sep 18, 2013 at 04:51:21PM +0200, Andrea Adami wrote:
> Hello,
> 
> as one of the developers of kexecboot, a kexec-based
> linux-as-bootloader, I'm following with interest this thread.
> FWIW since the beginning we are compiling kexec-tools statically
> against klibc for size constraints.

Hi Andrea,

Good to know about kexecboot.

FWIW, recently we discussed the kexec/kdump with secureboot issue
at Linux Plumbers and Greg KH suggested that it will be simpler if
we implement a new system call which does the job of loading new
kernel. Effectively that means reimplementing /sbin/kexec in kernel.
This will also mean maintaining two code bases for some time and
slowly deprecating one over a period of time.

I will probably start with something  small and post proof of concept
patches for review and see how does that go. This is just heads up 
on what I am planning to do.

Thanks
Vivek

  reply	other threads:[~2013-09-23 17:16 UTC|newest]

Thread overview: 82+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-10 21:44 [PATCH 00/16] [RFC PATCH] Signed kexec support Vivek Goyal
2013-09-10 21:44 ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 01/16] mm: vm_brk(), align the length to page boundary Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 02/16] integrity: Add a function to determine digital signature length Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 03/16] ima: Allow adding more memory locking metadata after digital signature v2 Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 04/16] integrity: Allow digital signature verification with a given keyring ptr Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-11 17:34   ` Mimi Zohar
2013-09-11 17:34     ` Mimi Zohar
2013-09-10 21:44 ` [PATCH 05/16] integrity: Export a function to retrieve hash algo used in digital signature Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 06/16] ima: export new IMA functions for signature verification Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 07/16] mm: Define a task flag MMF_VM_LOCKED for memlocked tasks and don't allow munlock Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 08/16] binfmt_elf: Elf executable signature verification Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 09/16] ima: define functions to appraise memory buffer contents Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 10/16] keyctl: Introduce a new operation KEYCTL_VERIFY_SIGNATURE Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 11/16] ptrace: Do not allow ptrace() from unsigned process to signed one Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 12/16] binfmt_elf: Do not mark process signed if binary has elf interpreter Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 13/16] kexec: Allow only signed processes to call sys_kexec() in secureboot mode Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 14/16] kexec: Export sysfs attributes for secureboot and secure modules to user space Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 22:40   ` Greg KH
2013-09-10 22:40     ` Greg KH
2013-09-11 13:44     ` Vivek Goyal
2013-09-11 13:44       ` Vivek Goyal
2013-09-10 22:57   ` Josh Boyer
2013-09-10 22:57     ` Josh Boyer
2013-09-11 13:51     ` Vivek Goyal
2013-09-11 13:51       ` Vivek Goyal
2013-09-10 21:44 ` [PATCH 15/16] bootparam: Pass acpi_rsdp pointer in bootparam Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-10 22:52   ` H. Peter Anvin
2013-09-10 22:52     ` H. Peter Anvin
2013-09-11 11:44     ` Borislav Petkov
2013-09-11 11:44       ` Borislav Petkov
2013-09-11 13:45       ` Vivek Goyal
2013-09-11 13:45         ` Vivek Goyal
2013-09-11 14:32         ` Borislav Petkov
2013-09-11 14:32           ` Borislav Petkov
2013-09-12  7:34           ` Dave Young
2013-09-12  7:34             ` Dave Young
2013-09-12 12:53             ` Borislav Petkov
2013-09-12 12:53               ` Borislav Petkov
2013-09-12 13:19               ` Vivek Goyal
2013-09-12 14:25                 ` Borislav Petkov
2013-09-12 14:25                   ` Borislav Petkov
2013-09-12 14:34               ` Matthew Garrett
2013-09-12 14:34                 ` Matthew Garrett
2013-09-12 14:42                 ` Borislav Petkov
2013-09-12 14:42                   ` Borislav Petkov
2013-09-13  7:12               ` Dave Young
2013-09-13  7:12                 ` Dave Young
2013-09-13 11:26                 ` Borislav Petkov
2013-09-13 11:26                   ` Borislav Petkov
2013-09-10 21:44 ` [PATCH 16/16] mount: Add a flag to not follow symlink at the end of mount point Vivek Goyal
2013-09-10 21:44   ` Vivek Goyal
2013-09-12  3:40 ` [PATCH 00/16] [RFC PATCH] Signed kexec support Greg KH
2013-09-12  3:40   ` Greg KH
2013-09-12 11:43   ` Vivek Goyal
2013-09-12 11:43     ` Vivek Goyal
2013-09-12 16:17     ` Greg KH
2013-09-12 16:17       ` Greg KH
2013-09-12 18:24       ` Mimi Zohar
2013-09-12 18:24         ` Mimi Zohar
2013-09-16 14:28         ` Vivek Goyal
2013-09-18 14:51           ` Andrea Adami
2013-09-18 14:51             ` Andrea Adami
2013-09-23 17:15             ` Vivek Goyal [this message]
2013-09-23 17:15               ` Vivek Goyal
2013-09-16 14:24       ` Vivek Goyal
2013-09-16 14:24         ` Vivek Goyal

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