Ralf Ramsauer 0935e5f752 x86/jailhouse: Improve setup data version comparison ... Soon, setup_data will contain information on passed-through platform UARTs. This requires some preparational work for the sanity check of the header and the check of the version. Use the following strategy: 1. Ensure that the header declares at least enough space for the version and the compatible_version as it must hold that fields for any version. The location and semantics of header+version fields will never change. 2. Copy over data -- as much as as possible. The length is either limited by the header length or the length of setup_data. 3. Things are now in place -- sanity check if the header length complies the actual version. For future versions of the setup_data, only step 3 requires alignment. Signed-off-by: Ralf Ramsauer <ralf.ramsauer@oth-regensburg.de> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Baoquan He <bhe@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: jailhouse-dev@googlegroups.com Cc: Juergen Gross <jgross@suse.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20191010102102.421035-2-ralf.ramsauer@oth-regensburg.de		2019-10-10 15:38:30 +02:00
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asm	x86/platform/uv: Account for UV Hubless in is_uvX_hub Ops	2019-10-07 13:42:11 +02:00
uapi/asm	x86/jailhouse: Improve setup data version comparison	2019-10-10 15:38:30 +02:00