From 867fe800b4c423bce46e66ccb2ce91bebbd5afc6 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Wed, 13 Apr 2016 17:04:44 -0700 Subject: [PATCH] x86/paravirt: Remove paravirt_enabled() Now that all previous paravirt_enabled() uses were replaced with proper x86 semantics by the previous patches we can remove the unused paravirt_enabled() mechanism. Signed-off-by: Luis R. Rodriguez Acked-by: Juergen Gross 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: 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/1460592286-300-15-git-send-email-mcgrof@kernel.org Signed-off-by: Ingo Molnar --- arch/x86/include/asm/paravirt.h | 5 ----- arch/x86/include/asm/paravirt_types.h | 1 - arch/x86/include/asm/processor.h | 1 - arch/x86/kernel/kvm.c | 8 -------- arch/x86/kernel/paravirt.c | 1 - arch/x86/lguest/boot.c | 2 -- arch/x86/xen/enlighten.c | 1 - 7 files changed, 19 deletions(-) diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 6c7a4a192032..dff26bc91b17 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -15,11 +15,6 @@ #include #include -static inline int paravirt_enabled(void) -{ - return pv_info.paravirt_enabled; -} - static inline void load_sp0(struct tss_struct *tss, struct thread_struct *thread) { diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index 6acc1b26cf40..7fedf24bd811 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -69,7 +69,6 @@ struct pv_info { u16 extra_user_64bit_cs; /* __USER_CS if none */ #endif - int paravirt_enabled; const char *name; }; diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 0c70c7daa6b8..8d326e822cb8 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -473,7 +473,6 @@ static inline unsigned long current_top_of_stack(void) #include #else #define __cpuid native_cpuid -#define paravirt_enabled() 0 static inline void load_sp0(struct tss_struct *tss, struct thread_struct *thread) diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 807950860fb7..c66546f29b81 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -285,14 +285,6 @@ static void __init paravirt_ops_setup(void) { pv_info.name = "KVM"; - /* - * KVM isn't paravirt in the sense of paravirt_enabled. A KVM - * guest kernel works like a bare metal kernel with additional - * features, and paravirt_enabled is about features that are - * missing. - */ - pv_info.paravirt_enabled = 0; - if (kvm_para_has_feature(KVM_FEATURE_NOP_IO_DELAY)) pv_cpu_ops.io_delay = kvm_io_delay; diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index f08ac28b8136..71a2d8a05a66 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -294,7 +294,6 @@ enum paravirt_lazy_mode paravirt_get_lazy_mode(void) struct pv_info pv_info = { .name = "bare hardware", - .paravirt_enabled = 0, .kernel_rpl = 0, .shared_kernel_pmd = 1, /* Only used when CONFIG_X86_PAE is set */ diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c index f5497ee5fd2f..3847e736702e 100644 --- a/arch/x86/lguest/boot.c +++ b/arch/x86/lguest/boot.c @@ -1408,8 +1408,6 @@ __init void lguest_init(void) { /* We're under lguest. */ pv_info.name = "lguest"; - /* Paravirt is enabled. */ - pv_info.paravirt_enabled = 1; /* We're running at privilege level 1, not 0 as normal. */ pv_info.kernel_rpl = 1; /* Everyone except Xen runs with this set. */ diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 752029d571bf..5fc20a1108c7 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1187,7 +1187,6 @@ static unsigned xen_patch(u8 type, u16 clobbers, void *insnbuf, } static const struct pv_info xen_info __initconst = { - .paravirt_enabled = 1, .shared_kernel_pmd = 0, #ifdef CONFIG_X86_64