On Tue, Jun 28, 2022 at 09:29:48AM -0400, Stefan Berger wrote:
>
>
> On 6/27/22 18:43, Rob Herring wrote:
> > On Thu, Jun 16, 2022 at 11:41:28AM -0400, Stefan Berger wrote:
> > > Simplify tpm_read_log_of() by moving Openfirmware-specific code into
> > > the Openfirmware driver to make the code
On Tue, Jun 28, 2022 at 05:10:56PM -0700, Dave Hansen wrote:
> On 6/28/22 16:51, Kirill A. Shutemov wrote:
> > On Fri, Jun 24, 2022 at 05:00:05AM +0300, Kirill A. Shutemov wrote:
> >>> If there is some deep and fundamental why this can not be supported
> >>> then it probably makes sense to put
On 6/28/22 16:51, Kirill A. Shutemov wrote:
> On Fri, Jun 24, 2022 at 05:00:05AM +0300, Kirill A. Shutemov wrote:
>>> If there is some deep and fundamental why this can not be supported
>>> then it probably makes sense to put some code in the arch_kexec_load
>>> hook that verifies that deep and
On Fri, Jun 24, 2022 at 05:00:05AM +0300, Kirill A. Shutemov wrote:
> > If there is some deep and fundamental why this can not be supported
> > then it probably makes sense to put some code in the arch_kexec_load
> > hook that verifies that deep and fundamental reason is present.
>
> Sounds
On 27/06/22 13:42, Valentin Schneider wrote:
> On 25/06/22 12:04, Eric W. Biederman wrote:
>> At this point I recommend going back to being ``unconventional'' with
>> the kexec locking and effectively reverting commit 8c5a1cf0ad3a ("kexec:
>> use a mutex for locking rather than xchg()").
>>
>>
On 6/28/22 12:58, Stefan Berger wrote:
The of-tree subsystem does not currently preserve the IBM vTPM 1.2 and
vTPM 2.0 measurement logs across a kexec on ppc64. This series fixes this
for the kexec_file_load() syscall using the flattened device tree (fdt) to
carry the measurement log's buffer
The memory area of the TPM measurement log is currently not properly
duplicated for carrying it across kexec when an Open Firmware
Devicetree is used. Therefore, the contents of the log get corrupted.
Fix this for the kexec_file_load() syscall by allocating a buffer and
copying the contents of the
Refactor IMA buffer related functions to make them reusable for carrying
TPM logs across kexec.
Signed-off-by: Stefan Berger
Cc: Rob Herring
Cc: Frank Rowand
Cc: Mimi Zohar
---
drivers/of/kexec.c | 99 +-
1 file changed, 62 insertions(+), 37
Simplify tpm_read_log_of() by moving reusable parts of the code into
its own file to make the code commonly available so it can be used also
for kexec support. Call the new of_tpm_get_sml_parameters() function
from the TPM Open Firmware driver.
Compile the new file when CONFIG_OF is enabled so
The of-tree subsystem does not currently preserve the IBM vTPM 1.2 and
vTPM 2.0 measurement logs across a kexec on ppc64. This series fixes this
for the kexec_file_load() syscall using the flattened device tree (fdt) to
carry the measurement log's buffer across kexec.
Stefan
Stefan Berger
Hi Stefan,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on char-misc/char-misc-testing]
[also build test ERROR on linus/master v5.19-rc4 next-20220628]
[cannot apply to robh/for-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when
commit 3e35142ef99fe6b4fe5d834ad43ee13cca10a2dc upstream.
Since commit d1bcae833b32f1 ("ELF: Don't generate unused section
symbols") [1], binutils (v2.36+) started dropping section symbols that
it thought were unused. This isn't an issue in general, but with
kexec_file.c, gcc is placing
commit 3e35142ef99fe6b4fe5d834ad43ee13cca10a2dc upstream.
Since commit d1bcae833b32f1 ("ELF: Don't generate unused section
symbols") [1], binutils (v2.36+) started dropping section symbols that
it thought were unused. This isn't an issue in general, but with
kexec_file.c, gcc is placing
commit 3e35142ef99fe6b4fe5d834ad43ee13cca10a2dc upstream.
Since commit d1bcae833b32f1 ("ELF: Don't generate unused section
symbols") [1], binutils (v2.36+) started dropping section symbols that
it thought were unused. This isn't an issue in general, but with
kexec_file.c, gcc is placing
commit 3e35142ef99fe6b4fe5d834ad43ee13cca10a2dc upstream.
Since commit d1bcae833b32f1 ("ELF: Don't generate unused section
symbols") [1], binutils (v2.36+) started dropping section symbols that
it thought were unused. This isn't an issue in general, but with
kexec_file.c, gcc is placing
On 6/27/22 18:43, Rob Herring wrote:
On Thu, Jun 16, 2022 at 11:41:28AM -0400, Stefan Berger wrote:
Simplify tpm_read_log_of() by moving Openfirmware-specific code into
the Openfirmware driver to make the code reusable. Call the new
There is no such 'Openfirmware driver'.
On 6/27/22 18:33, Rob Herring wrote:
On Thu, Jun 16, 2022 at 11:41:27AM -0400, Stefan Berger wrote:
The of-tree driver does not currently preserve the IBM vTPM 1.2 and
vTPM 2.0 measurement logs across a kexec. This series fixes this for the
kexec_file_load() syscall using the flattened
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