x86/mm: Factor out CR3-building code
Current, the code that assembles a value to load into CR3 is open-coded everywhere. Factor it out into helpers build_cr3() and build_cr3_noflush(). This makes one semantic change: __get_current_cr3_fast() was wrong on SME systems. No one noticed because the only caller is in the VMX code, and there are no CPUs with both SME and VMX. Signed-off-by:Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bpetkov@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tom Lendacky <Thomas.Lendacky@amd.com> Link: http://lkml.kernel.org/r/ce350cf11e93e2842d14d0b95b0199c7d881f527.1505663533.git.luto@kernel.org Signed-off-by:
Ingo Molnar <mingo@kernel.org>
parent
0666f560
Please register or sign in to comment