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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2019-01-15 02:27:53 +0400 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-01-17 21:10:57 -0500 |
| commit | ec86c0f678a9402fb4265c8874bd2ec712b33127 (patch) | |
| tree | 99d8216b23dc5bf8f3f62176bd20f3e16f6e6723 /docs | |
| parent | ac6dd31e3fe7e19be6fcaa7bf2396780b355137d (diff) | |
| download | qemu-ec86c0f678a9402fb4265c8874bd2ec712b33127.zip qemu-ec86c0f678a9402fb4265c8874bd2ec712b33127.tar.gz qemu-ec86c0f678a9402fb4265c8874bd2ec712b33127.tar.bz2 | |
acpi: add ACPI memory clear interface
The interface is described in the "TCG Platform Reset Attack
Mitigation Specification", chapter 6 "ACPI _DSM Function". According
to Laszlo, it's not so easy to implement in OVMF, he suggested to do
it in qemu instead.
See specification documentation for more details, and next commit for
memory clear on reset handling.
The underlying TCG specification is accessible from the following
page.
https://trustedcomputinggroup.org/resource/pc-client-work-group-platform-reset-attack-mitigation-specification-version-1-0/
This patch implements version 1.0.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/specs/tpm.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/docs/specs/tpm.txt b/docs/specs/tpm.txt index 424d151..5d8c26b 100644 --- a/docs/specs/tpm.txt +++ b/docs/specs/tpm.txt @@ -136,6 +136,8 @@ layout: | next_step| 0x1 | 0x159 | Operation to execute after reboot by | | | | | firmware. Used by firmware. | +----------+--------+--------+-------------------------------------------+ + | movv | 0x1 | 0x15a | Memory overwrite variable | + +----------+--------+--------+-------------------------------------------+ The following values are supported for the 'func' field. They correspond to the values used by ACPI function index 8. |