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Re: [Xen-devel] [PATCH RFC] Add SUPPORT.md

On 11/09/17 15:16, George Dunlap wrote:
On 09/07/2017 10:54 PM, Stefano Stabellini wrote:
On Thu, 31 Aug 2017, George Dunlap wrote:
+### Direct-boot kernel image format
+    Supported, x86: bzImage
+    Supported, ARM32: zImage
+    Supported, ARM64: Image [XXX - Not sure if this is correct]

On ARM64 it's called Image.gz.

+### vTPM Support
+    Status: Supported, x86 only

This should probably be x86/vTPM. TPM, the way we are discussing it, is
an x86-only implementation. ARM-based alternatives are not called TPM

Someone said that because this was implemented entirely in userspace,
there's no reason the PV TPM couldn't work on ARM.  OTOH I suppose it
would be a lot less valuable if there weren't a physical TPM to back it up.

Any thoughts on that?

Per my understanding TPM is a specification and not tie to Arm, x86 or else. So if providing the PV driver is agnostic to x86 it should work. Note that I haven't looked at the code nor I am aware of some that tested it.


Julien Grall

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