From a99da1be251f4317034da1ef9770b64d5d66d7df Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Wed, 13 Apr 2016 17:04:38 -0700 Subject: [PATCH] x86/apm32: Remove paravirt_enabled() use There is already a check for apm_info.bios == 0, the apm_info.bios is set from the boot_params.apm_bios_info. Both Xen and lguest, which are also the only ones that set paravirt_enabled to true, never set the apm_bios.info. The Xen folks are sure force disable to 0 is not needed because apm_info lives in .bss, we recently forced disabled this on lguest, and on the Xen side just to be sure Boris zeroed out the .bss for PV guests through commit 8b5f5979aaeebe6f4285 ("xen/x86: Zero out .bss for PV guests"). With this care taken into consideration the paravirt_enabled() check is simply not needed anymore. Signed-off-by: Luis R. Rodriguez Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: andrew.cooper3@citrix.com Cc: andriy.shevchenko@linux.intel.com Cc: bigeasy@linutronix.de Cc: boris.ostrovsky@oracle.com Cc: david.vrabel@citrix.com Cc: ffainelli@freebox.fr Cc: george.dunlap@citrix.com Cc: glin@suse.com Cc: jgross@suse.com Cc: jlee@suse.com Cc: josh@joshtriplett.org Cc: julien.grall@linaro.org Cc: konrad.wilk@oracle.com Cc: kozerkov@parallels.com Cc: lenb@kernel.org Cc: lguest@lists.ozlabs.org Cc: linux-acpi@vger.kernel.org Cc: lv.zheng@intel.com Cc: matt@codeblueprint.co.uk Cc: mbizon@freebox.fr Cc: rjw@rjwysocki.net Cc: robert.moore@intel.com Cc: rusty@rustcorp.com.au Cc: tiwai@suse.de Cc: toshi.kani@hp.com Cc: xen-devel@lists.xensource.com Link: http://lkml.kernel.org/r/1460592286-300-9-git-send-email-mcgrof@kernel.org Signed-off-by: Ingo Molnar --- arch/x86/kernel/apm_32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c index 9307f182fe304..c7364bd633e1d 100644 --- a/arch/x86/kernel/apm_32.c +++ b/arch/x86/kernel/apm_32.c @@ -2267,7 +2267,7 @@ static int __init apm_init(void) dmi_check_system(apm_dmi_table); - if (apm_info.bios.version == 0 || paravirt_enabled() || machine_is_olpc()) { + if (apm_info.bios.version == 0 || machine_is_olpc()) { printk(KERN_INFO "apm: BIOS not found.\n"); return -ENODEV; } -- 2.39.5