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460c484f24
SPM_VMID is a global resource, SPM access the video memory according to SPM_VMID. The initial valude of SPM_VMID is 0 which is used by kernel. That means UMD can overwrite the memory of VMID0 by enabling SPM, that is really dangerous. Initialize SPM_VMID with 0xf, it messes up other user mode process at most. v2: squash in indentation fix Signed-off-by: Jacob He <jacob.he@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.