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* [PATCH 0/2] x86: Make Linux guest support optional
@ 2013-03-04 20:20 Borislav Petkov
  2013-03-04 20:20 ` [PATCH 1/2] x86, Kconfig: Move PARAVIRT_DEBUG into the paravirt menu Borislav Petkov
  2013-03-04 20:20 ` [PATCH 2/2] x86: Make Linux guest support optional Borislav Petkov
  0 siblings, 2 replies; 6+ messages in thread
From: Borislav Petkov @ 2013-03-04 20:20 UTC (permalink / raw)
  To: H. Peter Anvin; +Cc: X86 ML, LKML, Borislav Petkov

From: Borislav Petkov <bp@suse.de>

Hi,

two patches which make hypervisor glue for Linux running as a guest
ontop optional. Same patches from before but rebased ontop of v3.9-rc1.

Thanks.

Borislav Petkov (2):
  x86, Kconfig: Move PARAVIRT_DEBUG into the paravirt menu
  x86: Make Linux guest support optional

 arch/x86/Kconfig                  | 89 ++++++++++++++++++++-------------------
 arch/x86/include/asm/hypervisor.h | 16 ++++---
 arch/x86/kernel/cpu/Makefile      |  3 +-
 arch/x86/lguest/Kconfig           |  3 +-
 arch/x86/xen/Kconfig              |  2 +-
 drivers/hv/Kconfig                |  2 +-
 drivers/misc/Kconfig              |  2 +-
 7 files changed, 62 insertions(+), 55 deletions(-)

-- 
1.8.1.3.535.ga923c31


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [PATCH 1/2] x86, Kconfig: Move PARAVIRT_DEBUG into the paravirt menu
  2013-03-04 20:20 [PATCH 0/2] x86: Make Linux guest support optional Borislav Petkov
@ 2013-03-04 20:20 ` Borislav Petkov
  2013-03-04 23:54   ` [tip:x86/paravirt] " tip-bot for Borislav Petkov
  2013-03-04 20:20 ` [PATCH 2/2] x86: Make Linux guest support optional Borislav Petkov
  1 sibling, 1 reply; 6+ messages in thread
From: Borislav Petkov @ 2013-03-04 20:20 UTC (permalink / raw)
  To: H. Peter Anvin; +Cc: X86 ML, LKML, Borislav Petkov

From: Borislav Petkov <bp@suse.de>

This should be under the PARAVIRT_GUEST menu.

Signed-off-by: Borislav Petkov <bp@suse.de>
---
 arch/x86/Kconfig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index a4f24f5b1218..f922a9b9a319 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -659,8 +659,6 @@ config PARAVIRT_SPINLOCKS
 config PARAVIRT_CLOCK
 	bool
 
-endif
-
 config PARAVIRT_DEBUG
 	bool "paravirt-ops debugging"
 	depends on PARAVIRT && DEBUG_KERNEL
@@ -668,6 +666,8 @@ config PARAVIRT_DEBUG
 	  Enable to debug paravirt_ops internals.  Specifically, BUG if
 	  a paravirt_op is missing when it is called.
 
+endif #PARAVIRT_GUEST
+
 config NO_BOOTMEM
 	def_bool y
 
-- 
1.8.1.3.535.ga923c31


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [PATCH 2/2] x86: Make Linux guest support optional
  2013-03-04 20:20 [PATCH 0/2] x86: Make Linux guest support optional Borislav Petkov
  2013-03-04 20:20 ` [PATCH 1/2] x86, Kconfig: Move PARAVIRT_DEBUG into the paravirt menu Borislav Petkov
@ 2013-03-04 20:20 ` Borislav Petkov
  2013-03-04 23:55   ` [tip:x86/paravirt] " tip-bot for Borislav Petkov
  1 sibling, 1 reply; 6+ messages in thread
From: Borislav Petkov @ 2013-03-04 20:20 UTC (permalink / raw)
  To: H. Peter Anvin; +Cc: X86 ML, LKML, Borislav Petkov

From: Borislav Petkov <bp@suse.de>

Put all config options needed to run Linux as a guest behind a
CONFIG_HYPERVISOR_GUEST menu so that they don't get built-in by default
but be selectable by the user. Also, make all units which depend on
x86_hyper, depend on this new symbol so that compilation doesn't fail
when CONFIG_HYPERVISOR_GUEST is disabled but those units assume its
presence.

Sort options in the new HYPERVISOR_GUEST menu, adapt config text and
drop redundant select.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Dmitry Torokhov <dtor@vmware.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: devel@linuxdriverproject.org
---
 arch/x86/Kconfig                  | 89 ++++++++++++++++++++-------------------
 arch/x86/include/asm/hypervisor.h | 16 ++++---
 arch/x86/kernel/cpu/Makefile      |  3 +-
 arch/x86/lguest/Kconfig           |  3 +-
 arch/x86/xen/Kconfig              |  2 +-
 drivers/hv/Kconfig                |  2 +-
 drivers/misc/Kconfig              |  2 +-
 7 files changed, 62 insertions(+), 55 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f922a9b9a319..e9e4623bd4da 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -389,7 +389,7 @@ config X86_NUMACHIP
 
 config X86_VSMP
 	bool "ScaleMP vSMP"
-	select PARAVIRT_GUEST
+	select HYPERVISOR_GUEST
 	select PARAVIRT
 	depends on X86_64 && PCI
 	depends on X86_EXTENDED_PLATFORM
@@ -596,44 +596,17 @@ config SCHED_OMIT_FRAME_POINTER
 
 	  If in doubt, say "Y".
 
-menuconfig PARAVIRT_GUEST
-	bool "Paravirtualized guest support"
+menuconfig HYPERVISOR_GUEST
+	bool "Linux guest support"
 	---help---
-	  Say Y here to get to see options related to running Linux under
-	  various hypervisors.  This option alone does not add any kernel code.
+	  Say Y here to enable options for running Linux under various hyper-
+	  visors. This option enables basic hypervisor detection and platform
+	  setup.
 
-	  If you say N, all options in this submenu will be skipped and disabled.
+	  If you say N, all options in this submenu will be skipped and
+	  disabled, and Linux guest support won't be built in.
 
-if PARAVIRT_GUEST
-
-config PARAVIRT_TIME_ACCOUNTING
-	bool "Paravirtual steal time accounting"
-	select PARAVIRT
-	default n
-	---help---
-	  Select this option to enable fine granularity task steal time
-	  accounting. Time spent executing other tasks in parallel with
-	  the current vCPU is discounted from the vCPU power. To account for
-	  that, there can be a small performance impact.
-
-	  If in doubt, say N here.
-
-source "arch/x86/xen/Kconfig"
-
-config KVM_GUEST
-	bool "KVM Guest support (including kvmclock)"
-	select PARAVIRT
-	select PARAVIRT
-	select PARAVIRT_CLOCK
-	default y if PARAVIRT_GUEST
-	---help---
-	  This option enables various optimizations for running under the KVM
-	  hypervisor. It includes a paravirtualized clock, so that instead
-	  of relying on a PIT (or probably other) emulation by the
-	  underlying device model, the host provides the guest with
-	  timing infrastructure such as time of day, and system time
-
-source "arch/x86/lguest/Kconfig"
+if HYPERVISOR_GUEST
 
 config PARAVIRT
 	bool "Enable paravirtualization code"
@@ -643,6 +616,13 @@ config PARAVIRT
 	  over full virtualization.  However, when run without a hypervisor
 	  the kernel is theoretically slower and slightly larger.
 
+config PARAVIRT_DEBUG
+	bool "paravirt-ops debugging"
+	depends on PARAVIRT && DEBUG_KERNEL
+	---help---
+	  Enable to debug paravirt_ops internals.  Specifically, BUG if
+	  a paravirt_op is missing when it is called.
+
 config PARAVIRT_SPINLOCKS
 	bool "Paravirtualization layer for spinlocks"
 	depends on PARAVIRT && SMP
@@ -656,17 +636,38 @@ config PARAVIRT_SPINLOCKS
 
 	  If you are unsure how to answer this question, answer N.
 
-config PARAVIRT_CLOCK
-	bool
+source "arch/x86/xen/Kconfig"
 
-config PARAVIRT_DEBUG
-	bool "paravirt-ops debugging"
-	depends on PARAVIRT && DEBUG_KERNEL
+config KVM_GUEST
+	bool "KVM Guest support (including kvmclock)"
+	depends on PARAVIRT
+	select PARAVIRT_CLOCK
+	default y
 	---help---
-	  Enable to debug paravirt_ops internals.  Specifically, BUG if
-	  a paravirt_op is missing when it is called.
+	  This option enables various optimizations for running under the KVM
+	  hypervisor. It includes a paravirtualized clock, so that instead
+	  of relying on a PIT (or probably other) emulation by the
+	  underlying device model, the host provides the guest with
+	  timing infrastructure such as time of day, and system time
+
+source "arch/x86/lguest/Kconfig"
+
+config PARAVIRT_TIME_ACCOUNTING
+	bool "Paravirtual steal time accounting"
+	depends on PARAVIRT
+	default n
+	---help---
+	  Select this option to enable fine granularity task steal time
+	  accounting. Time spent executing other tasks in parallel with
+	  the current vCPU is discounted from the vCPU power. To account for
+	  that, there can be a small performance impact.
+
+	  If in doubt, say N here.
+
+config PARAVIRT_CLOCK
+	bool
 
-endif #PARAVIRT_GUEST
+endif #HYPERVISOR_GUEST
 
 config NO_BOOTMEM
 	def_bool y
diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/asm/hypervisor.h
index 86095ed14135..2d4b5e6107cd 100644
--- a/arch/x86/include/asm/hypervisor.h
+++ b/arch/x86/include/asm/hypervisor.h
@@ -20,13 +20,11 @@
 #ifndef _ASM_X86_HYPERVISOR_H
 #define _ASM_X86_HYPERVISOR_H
 
+#ifdef CONFIG_HYPERVISOR_GUEST
+
 #include <asm/kvm_para.h>
 #include <asm/xen/hypervisor.h>
 
-extern void init_hypervisor(struct cpuinfo_x86 *c);
-extern void init_hypervisor_platform(void);
-extern bool hypervisor_x2apic_available(void);
-
 /*
  * x86 hypervisor information
  */
@@ -55,4 +53,12 @@ extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
 extern const struct hypervisor_x86 x86_hyper_xen_hvm;
 extern const struct hypervisor_x86 x86_hyper_kvm;
 
-#endif
+extern void init_hypervisor(struct cpuinfo_x86 *c);
+extern void init_hypervisor_platform(void);
+extern bool hypervisor_x2apic_available(void);
+#else
+static inline void init_hypervisor(struct cpuinfo_x86 *c) { }
+static inline void init_hypervisor_platform(void) { }
+static inline bool hypervisor_x2apic_available(void) { return false; }
+#endif /* CONFIG_HYPERVISOR_GUEST */
+#endif /* _ASM_X86_HYPERVISOR_H */
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index a0e067d3d96c..5f81bcefbe14 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -14,7 +14,6 @@ CFLAGS_common.o		:= $(nostackp)
 
 obj-y			:= intel_cacheinfo.o scattered.o topology.o
 obj-y			+= proc.o capflags.o powerflags.o common.o
-obj-y			+= vmware.o hypervisor.o mshyperv.o
 obj-y			+= rdrand.o
 obj-y			+= match.o
 
@@ -42,6 +41,8 @@ obj-$(CONFIG_MTRR)			+= mtrr/
 
 obj-$(CONFIG_X86_LOCAL_APIC)		+= perfctr-watchdog.o perf_event_amd_ibs.o
 
+obj-$(CONFIG_HYPERVISOR_GUEST)		+= vmware.o hypervisor.o mshyperv.o
+
 quiet_cmd_mkcapflags = MKCAP   $@
       cmd_mkcapflags = $(PERL) $(srctree)/$(src)/mkcapflags.pl $< $@
 
diff --git a/arch/x86/lguest/Kconfig b/arch/x86/lguest/Kconfig
index 29043d2048a0..4a0890f815c4 100644
--- a/arch/x86/lguest/Kconfig
+++ b/arch/x86/lguest/Kconfig
@@ -1,7 +1,6 @@
 config LGUEST_GUEST
 	bool "Lguest guest support"
-	select PARAVIRT
-	depends on X86_32
+	depends on X86_32 && PARAVIRT
 	select TTY
 	select VIRTUALIZATION
 	select VIRTIO
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 131dacd2748a..1a3c76505649 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -4,7 +4,7 @@
 
 config XEN
 	bool "Xen guest support"
-	select PARAVIRT
+	depends on PARAVIRT
 	select PARAVIRT_CLOCK
 	select XEN_HAVE_PVMMU
 	depends on X86_64 || (X86_32 && X86_PAE && !X86_VISWS)
diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
index 64630f15f181..0403b51d20ba 100644
--- a/drivers/hv/Kconfig
+++ b/drivers/hv/Kconfig
@@ -2,7 +2,7 @@ menu "Microsoft Hyper-V guest support"
 
 config HYPERV
 	tristate "Microsoft Hyper-V client drivers"
-	depends on X86 && ACPI && PCI && X86_LOCAL_APIC
+	depends on X86 && ACPI && PCI && X86_LOCAL_APIC && HYPERVISOR_GUEST
 	help
 	  Select this option to run Linux as a Hyper-V client operating
 	  system.
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index e83fdfe0c8ca..891123e31932 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -418,7 +418,7 @@ config TI_DAC7512
 
 config VMWARE_BALLOON
 	tristate "VMware Balloon Driver"
-	depends on X86
+	depends on X86 && HYPERVISOR_GUEST
 	help
 	  This is VMware physical memory management driver which acts
 	  like a "balloon" that can be inflated to reclaim physical pages
-- 
1.8.1.3.535.ga923c31


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [tip:x86/paravirt] x86, Kconfig: Move PARAVIRT_DEBUG into the paravirt menu
  2013-03-04 20:20 ` [PATCH 1/2] x86, Kconfig: Move PARAVIRT_DEBUG into the paravirt menu Borislav Petkov
@ 2013-03-04 23:54   ` tip-bot for Borislav Petkov
  0 siblings, 0 replies; 6+ messages in thread
From: tip-bot for Borislav Petkov @ 2013-03-04 23:54 UTC (permalink / raw)
  To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, tglx, hpa, bp

Commit-ID:  2c59cad6941cb55990fa6e19d84ae027c46991ee
Gitweb:     http://git.kernel.org/tip/2c59cad6941cb55990fa6e19d84ae027c46991ee
Author:     Borislav Petkov <bp@suse.de>
AuthorDate: Mon, 4 Mar 2013 21:20:20 +0100
Committer:  H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Mon, 4 Mar 2013 13:14:06 -0800

x86, Kconfig: Move PARAVIRT_DEBUG into the paravirt menu

This should be under the PARAVIRT_GUEST menu.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1362428421-9244-2-git-send-email-bp@alien8.de
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
 arch/x86/Kconfig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index a4f24f5..f922a9b 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -659,8 +659,6 @@ config PARAVIRT_SPINLOCKS
 config PARAVIRT_CLOCK
 	bool
 
-endif
-
 config PARAVIRT_DEBUG
 	bool "paravirt-ops debugging"
 	depends on PARAVIRT && DEBUG_KERNEL
@@ -668,6 +666,8 @@ config PARAVIRT_DEBUG
 	  Enable to debug paravirt_ops internals.  Specifically, BUG if
 	  a paravirt_op is missing when it is called.
 
+endif #PARAVIRT_GUEST
+
 config NO_BOOTMEM
 	def_bool y
 

^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [tip:x86/paravirt] x86: Make Linux guest support optional
  2013-03-04 20:20 ` [PATCH 2/2] x86: Make Linux guest support optional Borislav Petkov
@ 2013-03-04 23:55   ` tip-bot for Borislav Petkov
  0 siblings, 0 replies; 6+ messages in thread
From: tip-bot for Borislav Petkov @ 2013-03-04 23:55 UTC (permalink / raw)
  To: linux-tip-commits
  Cc: linux-kernel, hpa, mingo, kys, haiyangz, dtor, tglx, hpa, bp

Commit-ID:  6276a074c6519946c527f03e2ab69770a62652d9
Gitweb:     http://git.kernel.org/tip/6276a074c6519946c527f03e2ab69770a62652d9
Author:     Borislav Petkov <bp@suse.de>
AuthorDate: Mon, 4 Mar 2013 21:20:21 +0100
Committer:  H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Mon, 4 Mar 2013 13:14:25 -0800

x86: Make Linux guest support optional

Put all config options needed to run Linux as a guest behind a
CONFIG_HYPERVISOR_GUEST menu so that they don't get built-in by default
but be selectable by the user. Also, make all units which depend on
x86_hyper, depend on this new symbol so that compilation doesn't fail
when CONFIG_HYPERVISOR_GUEST is disabled but those units assume its
presence.

Sort options in the new HYPERVISOR_GUEST menu, adapt config text and
drop redundant select.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1362428421-9244-3-git-send-email-bp@alien8.de
Cc: Dmitry Torokhov <dtor@vmware.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
 arch/x86/Kconfig                  | 89 ++++++++++++++++++++-------------------
 arch/x86/include/asm/hypervisor.h | 16 ++++---
 arch/x86/kernel/cpu/Makefile      |  3 +-
 arch/x86/lguest/Kconfig           |  3 +-
 arch/x86/xen/Kconfig              |  2 +-
 drivers/hv/Kconfig                |  2 +-
 drivers/misc/Kconfig              |  2 +-
 7 files changed, 62 insertions(+), 55 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f922a9b..e9e4623 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -389,7 +389,7 @@ config X86_NUMACHIP
 
 config X86_VSMP
 	bool "ScaleMP vSMP"
-	select PARAVIRT_GUEST
+	select HYPERVISOR_GUEST
 	select PARAVIRT
 	depends on X86_64 && PCI
 	depends on X86_EXTENDED_PLATFORM
@@ -596,44 +596,17 @@ config SCHED_OMIT_FRAME_POINTER
 
 	  If in doubt, say "Y".
 
-menuconfig PARAVIRT_GUEST
-	bool "Paravirtualized guest support"
+menuconfig HYPERVISOR_GUEST
+	bool "Linux guest support"
 	---help---
-	  Say Y here to get to see options related to running Linux under
-	  various hypervisors.  This option alone does not add any kernel code.
+	  Say Y here to enable options for running Linux under various hyper-
+	  visors. This option enables basic hypervisor detection and platform
+	  setup.
 
-	  If you say N, all options in this submenu will be skipped and disabled.
+	  If you say N, all options in this submenu will be skipped and
+	  disabled, and Linux guest support won't be built in.
 
-if PARAVIRT_GUEST
-
-config PARAVIRT_TIME_ACCOUNTING
-	bool "Paravirtual steal time accounting"
-	select PARAVIRT
-	default n
-	---help---
-	  Select this option to enable fine granularity task steal time
-	  accounting. Time spent executing other tasks in parallel with
-	  the current vCPU is discounted from the vCPU power. To account for
-	  that, there can be a small performance impact.
-
-	  If in doubt, say N here.
-
-source "arch/x86/xen/Kconfig"
-
-config KVM_GUEST
-	bool "KVM Guest support (including kvmclock)"
-	select PARAVIRT
-	select PARAVIRT
-	select PARAVIRT_CLOCK
-	default y if PARAVIRT_GUEST
-	---help---
-	  This option enables various optimizations for running under the KVM
-	  hypervisor. It includes a paravirtualized clock, so that instead
-	  of relying on a PIT (or probably other) emulation by the
-	  underlying device model, the host provides the guest with
-	  timing infrastructure such as time of day, and system time
-
-source "arch/x86/lguest/Kconfig"
+if HYPERVISOR_GUEST
 
 config PARAVIRT
 	bool "Enable paravirtualization code"
@@ -643,6 +616,13 @@ config PARAVIRT
 	  over full virtualization.  However, when run without a hypervisor
 	  the kernel is theoretically slower and slightly larger.
 
+config PARAVIRT_DEBUG
+	bool "paravirt-ops debugging"
+	depends on PARAVIRT && DEBUG_KERNEL
+	---help---
+	  Enable to debug paravirt_ops internals.  Specifically, BUG if
+	  a paravirt_op is missing when it is called.
+
 config PARAVIRT_SPINLOCKS
 	bool "Paravirtualization layer for spinlocks"
 	depends on PARAVIRT && SMP
@@ -656,17 +636,38 @@ config PARAVIRT_SPINLOCKS
 
 	  If you are unsure how to answer this question, answer N.
 
-config PARAVIRT_CLOCK
-	bool
+source "arch/x86/xen/Kconfig"
 
-config PARAVIRT_DEBUG
-	bool "paravirt-ops debugging"
-	depends on PARAVIRT && DEBUG_KERNEL
+config KVM_GUEST
+	bool "KVM Guest support (including kvmclock)"
+	depends on PARAVIRT
+	select PARAVIRT_CLOCK
+	default y
 	---help---
-	  Enable to debug paravirt_ops internals.  Specifically, BUG if
-	  a paravirt_op is missing when it is called.
+	  This option enables various optimizations for running under the KVM
+	  hypervisor. It includes a paravirtualized clock, so that instead
+	  of relying on a PIT (or probably other) emulation by the
+	  underlying device model, the host provides the guest with
+	  timing infrastructure such as time of day, and system time
+
+source "arch/x86/lguest/Kconfig"
+
+config PARAVIRT_TIME_ACCOUNTING
+	bool "Paravirtual steal time accounting"
+	depends on PARAVIRT
+	default n
+	---help---
+	  Select this option to enable fine granularity task steal time
+	  accounting. Time spent executing other tasks in parallel with
+	  the current vCPU is discounted from the vCPU power. To account for
+	  that, there can be a small performance impact.
+
+	  If in doubt, say N here.
+
+config PARAVIRT_CLOCK
+	bool
 
-endif #PARAVIRT_GUEST
+endif #HYPERVISOR_GUEST
 
 config NO_BOOTMEM
 	def_bool y
diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/asm/hypervisor.h
index 86095ed..2d4b5e6 100644
--- a/arch/x86/include/asm/hypervisor.h
+++ b/arch/x86/include/asm/hypervisor.h
@@ -20,13 +20,11 @@
 #ifndef _ASM_X86_HYPERVISOR_H
 #define _ASM_X86_HYPERVISOR_H
 
+#ifdef CONFIG_HYPERVISOR_GUEST
+
 #include <asm/kvm_para.h>
 #include <asm/xen/hypervisor.h>
 
-extern void init_hypervisor(struct cpuinfo_x86 *c);
-extern void init_hypervisor_platform(void);
-extern bool hypervisor_x2apic_available(void);
-
 /*
  * x86 hypervisor information
  */
@@ -55,4 +53,12 @@ extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
 extern const struct hypervisor_x86 x86_hyper_xen_hvm;
 extern const struct hypervisor_x86 x86_hyper_kvm;
 
-#endif
+extern void init_hypervisor(struct cpuinfo_x86 *c);
+extern void init_hypervisor_platform(void);
+extern bool hypervisor_x2apic_available(void);
+#else
+static inline void init_hypervisor(struct cpuinfo_x86 *c) { }
+static inline void init_hypervisor_platform(void) { }
+static inline bool hypervisor_x2apic_available(void) { return false; }
+#endif /* CONFIG_HYPERVISOR_GUEST */
+#endif /* _ASM_X86_HYPERVISOR_H */
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index a0e067d..5f81bce 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -14,7 +14,6 @@ CFLAGS_common.o		:= $(nostackp)
 
 obj-y			:= intel_cacheinfo.o scattered.o topology.o
 obj-y			+= proc.o capflags.o powerflags.o common.o
-obj-y			+= vmware.o hypervisor.o mshyperv.o
 obj-y			+= rdrand.o
 obj-y			+= match.o
 
@@ -42,6 +41,8 @@ obj-$(CONFIG_MTRR)			+= mtrr/
 
 obj-$(CONFIG_X86_LOCAL_APIC)		+= perfctr-watchdog.o perf_event_amd_ibs.o
 
+obj-$(CONFIG_HYPERVISOR_GUEST)		+= vmware.o hypervisor.o mshyperv.o
+
 quiet_cmd_mkcapflags = MKCAP   $@
       cmd_mkcapflags = $(PERL) $(srctree)/$(src)/mkcapflags.pl $< $@
 
diff --git a/arch/x86/lguest/Kconfig b/arch/x86/lguest/Kconfig
index 29043d2..4a0890f 100644
--- a/arch/x86/lguest/Kconfig
+++ b/arch/x86/lguest/Kconfig
@@ -1,7 +1,6 @@
 config LGUEST_GUEST
 	bool "Lguest guest support"
-	select PARAVIRT
-	depends on X86_32
+	depends on X86_32 && PARAVIRT
 	select TTY
 	select VIRTUALIZATION
 	select VIRTIO
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 131dacd..1a3c765 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -4,7 +4,7 @@
 
 config XEN
 	bool "Xen guest support"
-	select PARAVIRT
+	depends on PARAVIRT
 	select PARAVIRT_CLOCK
 	select XEN_HAVE_PVMMU
 	depends on X86_64 || (X86_32 && X86_PAE && !X86_VISWS)
diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
index 64630f1..0403b51 100644
--- a/drivers/hv/Kconfig
+++ b/drivers/hv/Kconfig
@@ -2,7 +2,7 @@ menu "Microsoft Hyper-V guest support"
 
 config HYPERV
 	tristate "Microsoft Hyper-V client drivers"
-	depends on X86 && ACPI && PCI && X86_LOCAL_APIC
+	depends on X86 && ACPI && PCI && X86_LOCAL_APIC && HYPERVISOR_GUEST
 	help
 	  Select this option to run Linux as a Hyper-V client operating
 	  system.
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index e83fdfe..891123e 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -418,7 +418,7 @@ config TI_DAC7512
 
 config VMWARE_BALLOON
 	tristate "VMware Balloon Driver"
-	depends on X86
+	depends on X86 && HYPERVISOR_GUEST
 	help
 	  This is VMware physical memory management driver which acts
 	  like a "balloon" that can be inflated to reclaim physical pages

^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [PATCH 0/2] x86: Make Linux guest support optional
@ 2013-02-14 19:28 Borislav Petkov
  0 siblings, 0 replies; 6+ messages in thread
From: Borislav Petkov @ 2013-02-14 19:28 UTC (permalink / raw)
  To: H. Peter Anvin; +Cc: X86 ML, LKML, Borislav Petkov

From: Borislav Petkov <bp@suse.de>

Hi all,

two patches which make hypervisor glue for Linux running as a guest
ontop optional.

@hpa: this is against tip/master of today which also includes
tip:x86/hyperv.

Thanks.

Borislav Petkov (2):
  x86, Kconfig: Move PARAVIRT_DEBUG into the paravirt menu
  x86: Make Linux guest support optional

 arch/x86/Kconfig                  | 89 ++++++++++++++++++++-------------------
 arch/x86/include/asm/hypervisor.h | 16 ++++---
 arch/x86/kernel/cpu/Makefile      |  3 +-
 arch/x86/lguest/Kconfig           |  3 +-
 arch/x86/xen/Kconfig              |  2 +-
 drivers/hv/Kconfig                |  2 +-
 drivers/misc/Kconfig              |  2 +-
 7 files changed, 62 insertions(+), 55 deletions(-)

-- 
1.8.1.3.535.ga923c31


^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-03-04 23:57 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-03-04 20:20 [PATCH 0/2] x86: Make Linux guest support optional Borislav Petkov
2013-03-04 20:20 ` [PATCH 1/2] x86, Kconfig: Move PARAVIRT_DEBUG into the paravirt menu Borislav Petkov
2013-03-04 23:54   ` [tip:x86/paravirt] " tip-bot for Borislav Petkov
2013-03-04 20:20 ` [PATCH 2/2] x86: Make Linux guest support optional Borislav Petkov
2013-03-04 23:55   ` [tip:x86/paravirt] " tip-bot for Borislav Petkov
  -- strict thread matches above, loose matches on Subject: below --
2013-02-14 19:28 [PATCH 0/2] " Borislav Petkov

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