]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/commit
x86/paravirt: Make "unsafe" MSR accesses unsafe even if PARAVIRT=y
authorAndy Lutomirski <luto@kernel.org>
Sat, 2 Apr 2016 14:01:39 +0000 (07:01 -0700)
committerIngo Molnar <mingo@kernel.org>
Wed, 13 Apr 2016 09:37:46 +0000 (11:37 +0200)
commit4985ce15a397e9b6541548efe3b9ffac2dda9127
tree4d05d1c37144934aaf948ab65585ad60aecba908
parentdd2f4a004b016bbfb64f1de49cb45e66232e40a6
x86/paravirt: Make "unsafe" MSR accesses unsafe even if PARAVIRT=y

Enabling CONFIG_PARAVIRT had an unintended side effect: rdmsr() turned
into rdmsr_safe() and wrmsr() turned into wrmsr_safe(), even on bare
metal.  Undo that by using the new unsafe paravirt MSR callbacks.

Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: KVM list <kvm@vger.kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: xen-devel <Xen-devel@lists.xen.org>
Link: http://lkml.kernel.org/r/414fabd6d3527703077c6c2a797223d0a9c3b081.1459605520.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/include/asm/paravirt.h