Messages in this thread Patch in this message | | | From | "Luis R. Rodriguez" <> | Subject | [PATCH v5 3/6] arch/x86/mm/pat: export pat_enabled() | Date | Thu, 30 Apr 2015 13:25:17 -0700 |
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From: "Luis R. Rodriguez" <mcgrof@suse.com>
Two Linux device drivers cannot work with PAT and the work required to make them work is significant. There is not enough motivation to convert these drivers over to use PAT properly, the compromise reached is to let drivers that cannot be ported to PAT check if PAT was enabled and if so fail on probe with a recommendation to boot with the "nopat" kernel parameter.
Cc: Andy Walls <awalls@md.metrocast.net> Cc: Doug Ledford <dledford@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Juergen Gross <jgross@suse.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Dave Airlie <airlied@redhat.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Borislav Petkov <bp@suse.de> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: linux-kernel@vger.kernel.org Cc: x86@kernel.org Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> --- arch/x86/mm/pat.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index f64785e..3d60207 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -55,6 +55,7 @@ bool pat_enabled(void) { return !!__pat_enabled; } +EXPORT_SYMBOL_GPL(pat_enabled); int pat_debug_enable; -- 2.3.2.209.gd67f9d5.dirty
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