Make it possible to opt-out from vmware support
Signed-off-by: Enrico Weigelt, metux IT consult <[email protected]>
---
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
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 <[email protected]>
> ---
> 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
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 <[email protected]>
>> ---
>> 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
[email protected] -- +49-151-27565287
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