From: Balbir Singh <bsingharora@gmail.com>
To: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: kexec@lists.infradead.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 0/9] kexec_file_load implementation for PowerPC
Date: Wed, 22 Jun 2016 23:29:46 +1000 [thread overview]
Message-ID: <20160622232946.793d6c04@350D> (raw)
In-Reply-To: <1466538521-31216-1-git-send-email-bauerman@linux.vnet.ibm.com>
On Tue, 21 Jun 2016 16:48:32 -0300
Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> wrote:
> Hello,
>
> This patch series implements the kexec_file_load system call on
> PowerPC.
>
> This system call moves the reading of the kernel, initrd and the
> device tree from the userspace kexec tool to the kernel. This is
> needed if you want to do one or both of the following:
>
> 1. only allow loading of signed kernels.
> 2. "measure" (i.e., record the hashes of) the kernel, initrd, kernel
> command line and other boot inputs for the Integrity Measurement
> Architecture subsystem.
>
> The above are the functions kexec already has built into
> kexec_file_load. Yesterday I posted a set of patches which allows a
> third feature:
>
> 3. have IMA pass-on its event log (where integrity measurements are
> registered) accross kexec to the second kernel, so that the event
> history is preserved.
OK.. and this is safe? Do both the kernels need to be signed by the
same certificate?
Balbir Singh
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WARNING: multiple messages have this Message-ID (diff)
From: Balbir Singh <bsingharora@gmail.com>
To: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org, kexec@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 0/9] kexec_file_load implementation for PowerPC
Date: Wed, 22 Jun 2016 23:29:46 +1000 [thread overview]
Message-ID: <20160622232946.793d6c04@350D> (raw)
In-Reply-To: <1466538521-31216-1-git-send-email-bauerman@linux.vnet.ibm.com>
On Tue, 21 Jun 2016 16:48:32 -0300
Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> wrote:
> Hello,
>
> This patch series implements the kexec_file_load system call on
> PowerPC.
>
> This system call moves the reading of the kernel, initrd and the
> device tree from the userspace kexec tool to the kernel. This is
> needed if you want to do one or both of the following:
>
> 1. only allow loading of signed kernels.
> 2. "measure" (i.e., record the hashes of) the kernel, initrd, kernel
> command line and other boot inputs for the Integrity Measurement
> Architecture subsystem.
>
> The above are the functions kexec already has built into
> kexec_file_load. Yesterday I posted a set of patches which allows a
> third feature:
>
> 3. have IMA pass-on its event log (where integrity measurements are
> registered) accross kexec to the second kernel, so that the event
> history is preserved.
OK.. and this is safe? Do both the kernels need to be signed by the
same certificate?
Balbir Singh
next prev parent reply other threads:[~2016-06-22 13:34 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-21 19:48 [PATCH v3 0/9] kexec_file_load implementation for PowerPC Thiago Jung Bauermann
2016-06-21 19:48 ` Thiago Jung Bauermann
2016-06-21 19:48 ` [PATCH v3 1/9] kexec_file: Remove unused members from struct kexec_buf Thiago Jung Bauermann
2016-06-21 19:48 ` Thiago Jung Bauermann
2016-06-21 19:48 ` [PATCH v3 2/9] kexec_file: Generalize kexec_add_buffer Thiago Jung Bauermann
2016-06-21 19:48 ` Thiago Jung Bauermann
2016-06-22 10:20 ` Dave Young
2016-06-22 10:20 ` Dave Young
2016-06-22 23:30 ` Thiago Jung Bauermann
2016-06-22 23:30 ` Thiago Jung Bauermann
2016-06-23 2:25 ` Dave Young
2016-06-23 2:25 ` Dave Young
2016-06-28 22:18 ` Thiago Jung Bauermann
2016-06-28 22:18 ` Thiago Jung Bauermann
2016-06-29 19:47 ` Dave Young
2016-06-29 19:47 ` Dave Young
2016-06-29 21:18 ` Thiago Jung Bauermann
2016-06-29 21:18 ` Thiago Jung Bauermann
2016-06-30 15:07 ` Dave Young
2016-06-30 15:07 ` Dave Young
2016-06-30 15:49 ` Thiago Jung Bauermann
2016-06-30 15:49 ` Thiago Jung Bauermann
2016-06-30 16:42 ` Thiago Jung Bauermann
2016-06-30 16:42 ` Thiago Jung Bauermann
2016-06-30 21:43 ` Dave Young
2016-06-30 21:43 ` Dave Young
2016-07-01 17:51 ` Thiago Jung Bauermann
2016-07-01 17:51 ` Thiago Jung Bauermann
2016-07-01 18:36 ` Dave Young
2016-07-01 18:36 ` Dave Young
2016-07-01 20:02 ` Thiago Jung Bauermann
2016-07-01 20:02 ` Thiago Jung Bauermann
2016-07-01 20:31 ` Thiago Jung Bauermann
2016-07-01 20:31 ` Thiago Jung Bauermann
2016-07-05 0:55 ` Dave Young
2016-07-05 0:55 ` Dave Young
2016-06-21 19:48 ` [PATCH v3 3/9] kexec_file: Factor out kexec_locate_mem_hole from kexec_add_buffer Thiago Jung Bauermann
2016-06-21 19:48 ` Thiago Jung Bauermann
2016-06-22 10:18 ` Dave Young
2016-06-22 10:18 ` Dave Young
2016-06-22 23:34 ` Thiago Jung Bauermann
2016-06-22 23:34 ` Thiago Jung Bauermann
2016-06-23 2:30 ` Dave Young
2016-06-23 2:30 ` Dave Young
2016-06-23 5:44 ` Dave Young
2016-06-23 5:44 ` Dave Young
2016-06-23 15:37 ` Thiago Jung Bauermann
2016-06-23 15:37 ` Thiago Jung Bauermann
2016-06-27 16:19 ` Dave Young
2016-06-27 16:19 ` Dave Young
2016-06-27 16:37 ` Thiago Jung Bauermann
2016-06-27 16:37 ` Thiago Jung Bauermann
2016-06-27 16:51 ` Thiago Jung Bauermann
2016-06-27 16:51 ` Thiago Jung Bauermann
2016-06-27 20:21 ` Dave Young
2016-06-27 20:21 ` Dave Young
2016-06-28 19:20 ` Dave Young
2016-06-28 19:20 ` Dave Young
2016-06-28 22:18 ` Thiago Jung Bauermann
2016-06-28 22:18 ` Thiago Jung Bauermann
2016-06-29 19:45 ` Dave Young
2016-06-29 19:45 ` Dave Young
2016-06-29 21:09 ` Thiago Jung Bauermann
2016-06-29 21:09 ` Thiago Jung Bauermann
2016-06-30 15:41 ` Dave Young
2016-06-30 15:41 ` Dave Young
2016-06-30 16:08 ` Thiago Jung Bauermann
2016-06-30 16:08 ` Thiago Jung Bauermann
2016-06-30 21:37 ` Dave Young
2016-06-30 21:37 ` Dave Young
2016-06-21 19:48 ` [PATCH v3 4/9] powerpc: Factor out relocation code from module_64.c to elf_util_64.c Thiago Jung Bauermann
2016-06-21 19:48 ` Thiago Jung Bauermann
2016-06-21 19:48 ` [PATCH v3 5/9] powerpc: Generalize elf64_apply_relocate_add Thiago Jung Bauermann
2016-06-21 19:48 ` Thiago Jung Bauermann
2016-06-21 19:48 ` [PATCH v3 6/9] powerpc: Add functions to read ELF files of any endianness Thiago Jung Bauermann
2016-06-21 19:48 ` Thiago Jung Bauermann
2016-06-21 19:48 ` [PATCH v3 7/9] powerpc: Implement kexec_file_load Thiago Jung Bauermann
2016-06-21 19:48 ` Thiago Jung Bauermann
2016-06-21 19:48 ` [PATCH v3 8/9] powerpc: Add support for loading ELF kernels with kexec_file_load Thiago Jung Bauermann
2016-06-21 19:48 ` Thiago Jung Bauermann
2016-06-21 19:48 ` [PATCH v3 9/9] powerpc: Add purgatory for kexec_file_load implementation Thiago Jung Bauermann
2016-06-21 19:48 ` Thiago Jung Bauermann
2016-06-22 13:29 ` Balbir Singh [this message]
2016-06-22 13:29 ` [PATCH v3 0/9] kexec_file_load implementation for PowerPC Balbir Singh
2016-06-22 17:02 ` Thiago Jung Bauermann
2016-06-22 17:02 ` Thiago Jung Bauermann
2016-06-22 23:57 ` Balbir Singh
2016-06-22 23:57 ` Balbir Singh
2016-06-23 16:44 ` Thiago Jung Bauermann
2016-06-23 16:44 ` Thiago Jung Bauermann
2016-06-23 22:33 ` Balbir Singh
2016-06-23 22:33 ` Balbir Singh
2016-06-23 23:49 ` Thiago Jung Bauermann
2016-06-23 23:49 ` Thiago Jung Bauermann
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