> -----Original Message----- > From: Wei Liu <wei.liu....@gmail.com> On Behalf Of Wei Liu > Sent: 18 December 2019 14:42 > To: Xen Development List <xen-devel@lists.xenproject.org> > Cc: Michael Kelley <mikel...@microsoft.com>; Durrant, Paul > <pdurr...@amazon.com>; Wei Liu <li...@microsoft.com>; Jan Beulich > <jbeul...@suse.com>; Andrew Cooper <andrew.coop...@citrix.com>; Wei Liu > <w...@xen.org>; Roger Pau Monné <roger....@citrix.com> > Subject: [PATCH v2 1/6] x86: import hyperv-tlfs.h from Linux > > Take a pristine copy from Linux commit > b2d8b167e15bb5ec2691d1119c025630a247f649. > > Do the following to fix it up for Xen: > > 1. include xen/types.h and xen/bitops.h > 2. fix up invocations of BIT macro > > Signed-off-by: Wei Liu <li...@microsoft.com> > Acked-by: Jan Beulich <jbeul...@suse.com> [snip] > +/* > + * The guest OS needs to register the guest ID with the hypervisor. > + * The guest ID is a 64 bit entity and the structure of this ID is > + * specified in the Hyper-V specification: > + * > + * msdn.microsoft.com/en- > us/library/windows/hardware/ff542653%28v=vs.85%29.aspx > + * > + * While the current guideline does not specify how Linux guest ID(s) > + * need to be generated, our plan is to publish the guidelines for > + * Linux and other guest operating systems that currently are hosted > + * on Hyper-V. The implementation here conforms to this yet > + * unpublished guidelines. > + * > + * > + * Bit(s) > + * 63 - Indicates if the OS is Open Source or not; 1 is Open Source > + * 62:56 - Os Type; Linux is 0x100 > + * 55:48 - Distro specific identification > + * 47:16 - Linux kernel version number > + * 15:0 - Distro specific identification > + * > + *
It might be useful to pull the declaration of union viridian_guest_os_id_msr in here since the comment is explaining the format. Paul _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
