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SubjectRe: [PATCH v6 23/34] x86, realmode: Decrypt trampoline area if memory encryption is active
On Wed, Jun 07, 2017 at 02:17:09PM -0500, Tom Lendacky wrote:
> When Secure Memory Encryption is enabled, the trampoline area must not
> be encrypted. A CPU running in real mode will not be able to decrypt
> memory that has been encrypted because it will not be able to use addresses
> with the memory encryption mask.
> A recent change that added a new system_state value exposed a warning
> issued by early_ioreamp() when the system_state was not SYSTEM_BOOTING.
> At the stage where the trampoline area is decrypted, the system_state is
> now SYSTEM_SCHEDULING. The check was changed to issue a warning if the
> system_state is greater than or equal to SYSTEM_RUNNING.

This piece along with the hunk touching system_state absolutely needs to
be a separate patch as it is unrelated.


Good mailing practices for 400: avoid top-posting and trim the reply.

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