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| author | Mario Limonciello <mario.limonciello@dell.com> | 2017-11-01 20:25:32 +0100 |
|---|---|---|
| committer | Darren Hart (VMware) <dvhart@infradead.org> | 2017-11-04 00:33:59 +0100 |
| commit | 1a258e670434f404a4500b65ba1afea2c2b29bba (patch) | |
| tree | f0bc6479ccd0b82a10b3eb1f4f459097f64010d7 /scripts/gcc-x86_64-has-stack-protector.sh | |
| parent | platform/x86: dell-smbios: Introduce dispatcher for SMM calls (diff) | |
| download | linux-1a258e670434f404a4500b65ba1afea2c2b29bba.tar.xz linux-1a258e670434f404a4500b65ba1afea2c2b29bba.zip | |
platform/x86: dell-smbios-wmi: Add new WMI dispatcher driver
The dell-smbios stack only currently uses an SMI interface which grants
direct access to physical memory to the firmware SMM methods via a pointer.
This dispatcher driver adds a WMI-ACPI interface that is detected by WMI
probe and preferred over the SMI interface in dell-smbios.
Changing this to operate over WMI-ACPI will use an ACPI OperationRegion
for a buffer of data storage when SMM calls are performed.
This is a safer approach to use in kernel drivers as the SMM will
only have access to that OperationRegion.
Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
Reviewed-by: Edward O'Callaghan <quasisec@google.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Diffstat (limited to 'scripts/gcc-x86_64-has-stack-protector.sh')
0 files changed, 0 insertions, 0 deletions