* [PATCH 1/2] x86: make vmware support optional
@ 2020-11-17 20:23 Enrico Weigelt, metux IT consult
2020-11-17 20:23 ` [PATCH 2/2] x86: make hyperv " Enrico Weigelt, metux IT consult
2020-11-17 20:31 ` [PATCH 1/2] x86: make vmware " Borislav Petkov
0 siblings, 2 replies; 7+ messages in thread
From: Enrico Weigelt, metux IT consult @ 2020-11-17 20:23 UTC (permalink / raw)
To: linux-kernel
Cc: tglx, mingo, bp, x86, hpa, dmitry.torokhov, derek.kiernan,
dragan.cvetic, richardcochran, linux-hyperv, linux-input, netdev
Make it possible to opt-out from vmware support
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
---
arch/x86/Kconfig | 7 +++++++
arch/x86/kernel/cpu/Makefile | 4 +++-
arch/x86/kernel/cpu/hypervisor.c | 2 ++
drivers/input/mouse/Kconfig | 2 +-
drivers/misc/Kconfig | 2 +-
drivers/ptp/Kconfig | 2 +-
6 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f6946b81f74a..c227c1fa0091 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -801,6 +801,13 @@ config X86_HV_CALLBACK_VECTOR
source "arch/x86/xen/Kconfig"
+config VMWARE_GUEST
+ bool "Vmware Guest support"
+ default y
+ help
+ This option enables several optimizations for running under the
+ VMware hypervisor.
+
config KVM_GUEST
bool "KVM Guest support (including kvmclock)"
depends on PARAVIRT
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index 93792b457b81..a615b0152bf0 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -51,7 +51,9 @@ obj-$(CONFIG_X86_CPU_RESCTRL) += resctrl/
obj-$(CONFIG_X86_LOCAL_APIC) += perfctr-watchdog.o
-obj-$(CONFIG_HYPERVISOR_GUEST) += vmware.o hypervisor.o mshyperv.o
+obj-$(CONFIG_HYPERVISOR_GUEST) += hypervisor.o mshyperv.o
+obj-$(CONFIG_VMWARE_GUEST) += vmware.o
+
obj-$(CONFIG_ACRN_GUEST) += acrn.o
ifdef CONFIG_X86_FEATURE_NAMES
diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c
index 553bfbfc3a1b..c0e770a224aa 100644
--- a/arch/x86/kernel/cpu/hypervisor.c
+++ b/arch/x86/kernel/cpu/hypervisor.c
@@ -34,7 +34,9 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] =
#ifdef CONFIG_XEN_PVHVM
&x86_hyper_xen_hvm,
#endif
+#ifdef CONFIG_VMWARE_GUEST
&x86_hyper_vmware,
+#endif
&x86_hyper_ms_hyperv,
#ifdef CONFIG_KVM_GUEST
&x86_hyper_kvm,
diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index d8b6a5dab190..29ced69d5c85 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -186,7 +186,7 @@ config MOUSE_PS2_FOCALTECH
config MOUSE_PS2_VMMOUSE
bool "Virtual mouse (vmmouse)"
- depends on MOUSE_PS2 && X86 && HYPERVISOR_GUEST
+ depends on MOUSE_PS2 && X86 && VMWARE_GUEST
help
Say Y here if you are running under control of VMware hypervisor
(ESXi, Workstation or Fusion). Also make sure that when you enable
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index fafa8b0d8099..d2bd8eff6eb6 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -363,7 +363,7 @@ config DS1682
config VMWARE_BALLOON
tristate "VMware Balloon Driver"
- depends on VMWARE_VMCI && X86 && HYPERVISOR_GUEST
+ depends on VMWARE_VMCI && X86 && VMWARE_GUEST
select MEMORY_BALLOON
help
This is VMware physical memory management driver which acts
diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index 942f72d8151d..6bf30153270e 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -141,7 +141,7 @@ config PTP_1588_CLOCK_IDTCM
config PTP_1588_CLOCK_VMW
tristate "VMware virtual PTP clock"
- depends on ACPI && HYPERVISOR_GUEST && X86
+ depends on ACPI && VMWARE_GUEST && X86
depends on PTP_1588_CLOCK
help
This driver adds support for using VMware virtual precision
--
2.11.0
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH 2/2] x86: make hyperv support optional
2020-11-17 20:23 [PATCH 1/2] x86: make vmware support optional Enrico Weigelt, metux IT consult
@ 2020-11-17 20:23 ` Enrico Weigelt, metux IT consult
2020-11-18 9:23 ` Wei Liu
2020-11-17 20:31 ` [PATCH 1/2] x86: make vmware " Borislav Petkov
1 sibling, 1 reply; 7+ messages in thread
From: Enrico Weigelt, metux IT consult @ 2020-11-17 20:23 UTC (permalink / raw)
To: linux-kernel
Cc: tglx, mingo, bp, x86, hpa, dmitry.torokhov, derek.kiernan,
dragan.cvetic, richardcochran, linux-hyperv, linux-input, netdev
Make it possible to opt-out from hyperv support.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
---
arch/x86/Kconfig | 7 +++++++
arch/x86/kernel/cpu/Makefile | 4 ++--
arch/x86/kernel/cpu/hypervisor.c | 2 ++
drivers/hv/Kconfig | 2 +-
4 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index c227c1fa0091..60aab344d6ab 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -808,6 +808,13 @@ config VMWARE_GUEST
This option enables several optimizations for running under the
VMware hypervisor.
+config HYPERV_GUEST
+ bool "HyperV Guest support"
+ default y
+ help
+ This option enables several optimizations for running under the
+ HyperV hypervisor.
+
config KVM_GUEST
bool "KVM Guest support (including kvmclock)"
depends on PARAVIRT
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index a615b0152bf0..5536b801cb44 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -51,9 +51,9 @@ obj-$(CONFIG_X86_CPU_RESCTRL) += resctrl/
obj-$(CONFIG_X86_LOCAL_APIC) += perfctr-watchdog.o
-obj-$(CONFIG_HYPERVISOR_GUEST) += hypervisor.o mshyperv.o
+obj-$(CONFIG_HYPERVISOR_GUEST) += hypervisor.o
obj-$(CONFIG_VMWARE_GUEST) += vmware.o
-
+obj-$(CONFIG_HYPERV_GUEST) += mshyperv.o
obj-$(CONFIG_ACRN_GUEST) += acrn.o
ifdef CONFIG_X86_FEATURE_NAMES
diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c
index c0e770a224aa..32d6b2084d05 100644
--- a/arch/x86/kernel/cpu/hypervisor.c
+++ b/arch/x86/kernel/cpu/hypervisor.c
@@ -37,7 +37,9 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] =
#ifdef CONFIG_VMWARE_GUEST
&x86_hyper_vmware,
#endif
+#ifdef CONFIG_HYPERV_GUEST
&x86_hyper_ms_hyperv,
+#endif
#ifdef CONFIG_KVM_GUEST
&x86_hyper_kvm,
#endif
diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
index 79e5356a737a..7b3094c59a81 100644
--- a/drivers/hv/Kconfig
+++ b/drivers/hv/Kconfig
@@ -4,7 +4,7 @@ menu "Microsoft Hyper-V guest support"
config HYPERV
tristate "Microsoft Hyper-V client drivers"
- depends on X86 && ACPI && X86_LOCAL_APIC && HYPERVISOR_GUEST
+ depends on X86 && ACPI && X86_LOCAL_APIC && HYPERV_GUEST
select PARAVIRT
select X86_HV_CALLBACK_VECTOR
help
--
2.11.0
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH 1/2] x86: make vmware support optional
2020-11-17 20:23 [PATCH 1/2] x86: make vmware support optional Enrico Weigelt, metux IT consult
2020-11-17 20:23 ` [PATCH 2/2] x86: make hyperv " Enrico Weigelt, metux IT consult
@ 2020-11-17 20:31 ` Borislav Petkov
2020-12-02 19:17 ` Enrico Weigelt, metux IT consult
1 sibling, 1 reply; 7+ messages in thread
From: Borislav Petkov @ 2020-11-17 20:31 UTC (permalink / raw)
To: Enrico Weigelt, metux IT consult
Cc: linux-kernel, tglx, mingo, x86, hpa, dmitry.torokhov,
derek.kiernan, dragan.cvetic, richardcochran, linux-hyperv,
linux-input, netdev
On Tue, Nov 17, 2020 at 09:23:07PM +0100, Enrico Weigelt, metux IT consult wrote:
> Make it possible to opt-out from vmware support
Why?
I can think of a couple of reasons but maybe yours might not be the one
I'm thinking of.
> Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
> ---
> arch/x86/Kconfig | 7 +++++++
> arch/x86/kernel/cpu/Makefile | 4 +++-
> arch/x86/kernel/cpu/hypervisor.c | 2 ++
> drivers/input/mouse/Kconfig | 2 +-
> drivers/misc/Kconfig | 2 +-
> drivers/ptp/Kconfig | 2 +-
> 6 files changed, 15 insertions(+), 4 deletions(-)
>
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index f6946b81f74a..c227c1fa0091 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -801,6 +801,13 @@ config X86_HV_CALLBACK_VECTOR
>
> source "arch/x86/xen/Kconfig"
>
> +config VMWARE_GUEST
> + bool "Vmware Guest support"
> + default y
depends on HYPERVISOR_GUEST. The hyperv one too.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 2/2] x86: make hyperv support optional
2020-11-17 20:23 ` [PATCH 2/2] x86: make hyperv " Enrico Weigelt, metux IT consult
@ 2020-11-18 9:23 ` Wei Liu
0 siblings, 0 replies; 7+ messages in thread
From: Wei Liu @ 2020-11-18 9:23 UTC (permalink / raw)
To: Enrico Weigelt, metux IT consult
Cc: linux-kernel, tglx, mingo, bp, x86, hpa, dmitry.torokhov,
derek.kiernan, dragan.cvetic, richardcochran, linux-hyperv,
linux-input, netdev, Wei Liu
On Tue, Nov 17, 2020 at 09:23:08PM +0100, Enrico Weigelt, metux IT consult wrote:
> Make it possible to opt-out from hyperv support.
>
"Hyper-V support".
Have you tested this patch? If so, how?
> Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
> ---
> arch/x86/Kconfig | 7 +++++++
> arch/x86/kernel/cpu/Makefile | 4 ++--
> arch/x86/kernel/cpu/hypervisor.c | 2 ++
> drivers/hv/Kconfig | 2 +-
> 4 files changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index c227c1fa0091..60aab344d6ab 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -808,6 +808,13 @@ config VMWARE_GUEST
> This option enables several optimizations for running under the
> VMware hypervisor.
>
> +config HYPERV_GUEST
> + bool "HyperV Guest support"
Hyper-V here.
> + default y
> + help
> + This option enables several optimizations for running under the
> + HyperV hypervisor.
> +
"for running under Hyper-V".
> config KVM_GUEST
> bool "KVM Guest support (including kvmclock)"
> depends on PARAVIRT
> diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
> index a615b0152bf0..5536b801cb44 100644
> --- a/arch/x86/kernel/cpu/Makefile
> +++ b/arch/x86/kernel/cpu/Makefile
> @@ -51,9 +51,9 @@ obj-$(CONFIG_X86_CPU_RESCTRL) += resctrl/
>
> obj-$(CONFIG_X86_LOCAL_APIC) += perfctr-watchdog.o
>
> -obj-$(CONFIG_HYPERVISOR_GUEST) += hypervisor.o mshyperv.o
> +obj-$(CONFIG_HYPERVISOR_GUEST) += hypervisor.o
> obj-$(CONFIG_VMWARE_GUEST) += vmware.o
> -
> +obj-$(CONFIG_HYPERV_GUEST) += mshyperv.o
> obj-$(CONFIG_ACRN_GUEST) += acrn.o
>
> ifdef CONFIG_X86_FEATURE_NAMES
> diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c
> index c0e770a224aa..32d6b2084d05 100644
> --- a/arch/x86/kernel/cpu/hypervisor.c
> +++ b/arch/x86/kernel/cpu/hypervisor.c
> @@ -37,7 +37,9 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] =
> #ifdef CONFIG_VMWARE_GUEST
> &x86_hyper_vmware,
> #endif
> +#ifdef CONFIG_HYPERV_GUEST
> &x86_hyper_ms_hyperv,
> +#endif
> #ifdef CONFIG_KVM_GUEST
> &x86_hyper_kvm,
> #endif
> diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
> index 79e5356a737a..7b3094c59a81 100644
> --- a/drivers/hv/Kconfig
> +++ b/drivers/hv/Kconfig
> @@ -4,7 +4,7 @@ menu "Microsoft Hyper-V guest support"
>
> config HYPERV
> tristate "Microsoft Hyper-V client drivers"
> - depends on X86 && ACPI && X86_LOCAL_APIC && HYPERVISOR_GUEST
> + depends on X86 && ACPI && X86_LOCAL_APIC && HYPERV_GUEST
> select PARAVIRT
> select X86_HV_CALLBACK_VECTOR
> help
Maybe that one should be moved to x86/Kconfig and used instead?
Wei.
> --
> 2.11.0
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 1/2] x86: make vmware support optional
2020-11-17 20:31 ` [PATCH 1/2] x86: make vmware " Borislav Petkov
@ 2020-12-02 19:17 ` Enrico Weigelt, metux IT consult
2020-12-02 19:22 ` Borislav Petkov
0 siblings, 1 reply; 7+ messages in thread
From: Enrico Weigelt, metux IT consult @ 2020-12-02 19:17 UTC (permalink / raw)
To: Borislav Petkov, Enrico Weigelt, metux IT consult
Cc: linux-kernel, tglx, mingo, x86, hpa, dmitry.torokhov,
derek.kiernan, dragan.cvetic, richardcochran, linux-hyperv,
linux-input, netdev
On 17.11.20 21:31, Borislav Petkov wrote:
> On Tue, Nov 17, 2020 at 09:23:07PM +0100, Enrico Weigelt, metux IT consult wrote:
>> Make it possible to opt-out from vmware support
>
> Why?
Reducing the kernel size. Think of very high density virtualization
(w/ specially stripped-down workloads) or embedded systems.
For example, I'm running bare minimum kernels w/ only kvm and virtio
(not even pci, etc) in such scenarios.
Of course, that's nothing for an average distro, therefore leaving
default y.
--mtx
>
> I can think of a couple of reasons but maybe yours might not be the one
> I'm thinking of.
>
>> Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
>> ---
>> arch/x86/Kconfig | 7 +++++++
>> arch/x86/kernel/cpu/Makefile | 4 +++-
>> arch/x86/kernel/cpu/hypervisor.c | 2 ++
>> drivers/input/mouse/Kconfig | 2 +-
>> drivers/misc/Kconfig | 2 +-
>> drivers/ptp/Kconfig | 2 +-
>> 6 files changed, 15 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
>> index f6946b81f74a..c227c1fa0091 100644
>> --- a/arch/x86/Kconfig
>> +++ b/arch/x86/Kconfig
>> @@ -801,6 +801,13 @@ config X86_HV_CALLBACK_VECTOR
>>
>> source "arch/x86/xen/Kconfig"
>>
>> +config VMWARE_GUEST
>> + bool "Vmware Guest support"
>> + default y
>
> depends on HYPERVISOR_GUEST. The hyperv one too.
>
--
---
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---
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@metux.net -- +49-151-27565287
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 1/2] x86: make vmware support optional
2020-12-02 19:17 ` Enrico Weigelt, metux IT consult
@ 2020-12-02 19:22 ` Borislav Petkov
0 siblings, 0 replies; 7+ messages in thread
From: Borislav Petkov @ 2020-12-02 19:22 UTC (permalink / raw)
To: Enrico Weigelt, metux IT consult
Cc: Enrico Weigelt, metux IT consult, linux-kernel, tglx, mingo, x86,
hpa, dmitry.torokhov, derek.kiernan, dragan.cvetic,
richardcochran, linux-hyperv, linux-input, netdev
On Wed, Dec 02, 2020 at 08:17:23PM +0100, Enrico Weigelt, metux IT consult wrote:
> Reducing the kernel size. Think of very high density virtualization
> (w/ specially stripped-down workloads) or embedded systems.
>
> For example, I'm running bare minimum kernels w/ only kvm and virtio
> (not even pci, etc) in such scenarios.
>
> Of course, that's nothing for an average distro, therefore leaving
> default y.
Ok, pls put the reasoning for the change in the next revision's commit
message along with how much KB savings we're talking about.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH 2/2] x86: make hyperv support optional
2020-11-17 20:21 Enrico Weigelt, metux IT consult
@ 2020-11-17 20:21 ` Enrico Weigelt, metux IT consult
0 siblings, 0 replies; 7+ messages in thread
From: Enrico Weigelt, metux IT consult @ 2020-11-17 20:21 UTC (permalink / raw)
To: linux-kernel
Cc: tglx, mingo, bp, x86, hpa, dmitry.torokhov, derek.kiernan,
dragan.cvetic, richardcochran, linux-hyperv, linux-input, netdev
---
arch/x86/Kconfig | 7 +++++++
arch/x86/kernel/cpu/Makefile | 4 ++--
arch/x86/kernel/cpu/hypervisor.c | 2 ++
drivers/hv/Kconfig | 2 +-
4 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index c227c1fa0091..60aab344d6ab 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -808,6 +808,13 @@ config VMWARE_GUEST
This option enables several optimizations for running under the
VMware hypervisor.
+config HYPERV_GUEST
+ bool "HyperV Guest support"
+ default y
+ help
+ This option enables several optimizations for running under the
+ HyperV hypervisor.
+
config KVM_GUEST
bool "KVM Guest support (including kvmclock)"
depends on PARAVIRT
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index a615b0152bf0..5536b801cb44 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -51,9 +51,9 @@ obj-$(CONFIG_X86_CPU_RESCTRL) += resctrl/
obj-$(CONFIG_X86_LOCAL_APIC) += perfctr-watchdog.o
-obj-$(CONFIG_HYPERVISOR_GUEST) += hypervisor.o mshyperv.o
+obj-$(CONFIG_HYPERVISOR_GUEST) += hypervisor.o
obj-$(CONFIG_VMWARE_GUEST) += vmware.o
-
+obj-$(CONFIG_HYPERV_GUEST) += mshyperv.o
obj-$(CONFIG_ACRN_GUEST) += acrn.o
ifdef CONFIG_X86_FEATURE_NAMES
diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c
index c0e770a224aa..32d6b2084d05 100644
--- a/arch/x86/kernel/cpu/hypervisor.c
+++ b/arch/x86/kernel/cpu/hypervisor.c
@@ -37,7 +37,9 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] =
#ifdef CONFIG_VMWARE_GUEST
&x86_hyper_vmware,
#endif
+#ifdef CONFIG_HYPERV_GUEST
&x86_hyper_ms_hyperv,
+#endif
#ifdef CONFIG_KVM_GUEST
&x86_hyper_kvm,
#endif
diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
index 79e5356a737a..7b3094c59a81 100644
--- a/drivers/hv/Kconfig
+++ b/drivers/hv/Kconfig
@@ -4,7 +4,7 @@ menu "Microsoft Hyper-V guest support"
config HYPERV
tristate "Microsoft Hyper-V client drivers"
- depends on X86 && ACPI && X86_LOCAL_APIC && HYPERVISOR_GUEST
+ depends on X86 && ACPI && X86_LOCAL_APIC && HYPERV_GUEST
select PARAVIRT
select X86_HV_CALLBACK_VECTOR
help
--
2.11.0
^ permalink raw reply related [flat|nested] 7+ messages in thread
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2020-11-18 9:23 ` Wei Liu
2020-11-17 20:31 ` [PATCH 1/2] x86: make vmware " Borislav Petkov
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