[RESEND PATCH 2/3] x86/vmware: Add basic paravirt ops support

2016-10-27 Thread Alexey Makhalov 
Add basic paravirt support:
 1. set pv_info.name to "VMware hypervisor" to have proper boot log message
Booting paravirtualized kernel on VMware hypervisor
instead of "... on bare hardware"
 2. set pv_cpu_ops.io_delay() to empty function - paravirt_nop() to
avoid vm-exits on IO delays.

Signed-off-by: Alexey Makhalov 
Acked-by: Alok N Kataria 
---
 arch/x86/kernel/cpu/vmware.c | 12 
 1 file changed, 12 insertions(+)

diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index 480790f..098a524 100644
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -61,6 +61,16 @@ static unsigned long vmware_get_tsc_khz(void)
return vmware_tsc_khz;
 }
 
+#ifdef CONFIG_PARAVIRT
+static void __init vmware_paravirt_ops_setup(void)
+{
+   pv_info.name = "VMware hypervisor";
+   pv_cpu_ops.io_delay = paravirt_nop;
+}
+#else
+#define vmware_paravirt_ops_setup() do {} while (0)
+#endif
+
 static void __init vmware_platform_setup(void)
 {
uint32_t eax, ebx, ecx, edx;
@@ -94,6 +104,8 @@ static void __init vmware_platform_setup(void)
} else {
pr_warn("Failed to get TSC freq from the hypervisor\n");
}
+
+   vmware_paravirt_ops_setup();
 }
 
 /*
-- 
2.10.1

[RESEND PATCH 2/3] x86/vmware: Add basic paravirt ops support

2016-10-27 Thread Alexey Makhalov 
Add basic paravirt support:
 1. set pv_info.name to "VMware hypervisor" to have proper boot log message
Booting paravirtualized kernel on VMware hypervisor
instead of "... on bare hardware"
 2. set pv_cpu_ops.io_delay() to empty function - paravirt_nop() to
avoid vm-exits on IO delays.

Signed-off-by: Alexey Makhalov 
Acked-by: Alok N Kataria 
---
 arch/x86/kernel/cpu/vmware.c | 12 
 1 file changed, 12 insertions(+)

diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index 480790f..098a524 100644
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -61,6 +61,16 @@ static unsigned long vmware_get_tsc_khz(void)
return vmware_tsc_khz;
 }
 
+#ifdef CONFIG_PARAVIRT
+static void __init vmware_paravirt_ops_setup(void)
+{
+   pv_info.name = "VMware hypervisor";
+   pv_cpu_ops.io_delay = paravirt_nop;
+}
+#else
+#define vmware_paravirt_ops_setup() do {} while (0)
+#endif
+
 static void __init vmware_platform_setup(void)
 {
uint32_t eax, ebx, ecx, edx;
@@ -94,6 +104,8 @@ static void __init vmware_platform_setup(void)
} else {
pr_warn("Failed to get TSC freq from the hypervisor\n");
}
+
+   vmware_paravirt_ops_setup();
 }
 
 /*
-- 
2.10.1

Re: [PATCH 2/3] x86/vmware: Add basic paravirt ops support

2016-10-26 Thread Thomas Gleixner 
On Wed, 26 Oct 2016, Tim Mann wrote:

> I believe our trademark guidelines say we aren't supposed to use VMware as a
> noun to mean a product, only to mean the company.  So we can say "running on
> VMware ESXi" or "running in a VMware virtual machine", but "running on VMware"
> is wrong.  There is supposedly some good legal reason for this related to
> keeping our trademark.

Please sort that out internally and resend the whole lot when this is
resolved.

Thanks,

tglx

Re: [PATCH 2/3] x86/vmware: Add basic paravirt ops support

2016-10-26 Thread Thomas Gleixner 
On Wed, 26 Oct 2016, Tim Mann wrote:

> I believe our trademark guidelines say we aren't supposed to use VMware as a
> noun to mean a product, only to mean the company.  So we can say "running on
> VMware ESXi" or "running in a VMware virtual machine", but "running on VMware"
> is wrong.  There is supposedly some good legal reason for this related to
> keeping our trademark.

Please sort that out internally and resend the whole lot when this is
resolved.

Thanks,

tglx

Re: [PATCH 2/3] x86/vmware: Add basic paravirt ops support

2016-10-26 Thread Tim Mann 
I believe our trademark guidelines say we aren't supposed to use VMware as a
noun to mean a product, only to mean the company.  So we can say "running on
VMware ESXi" or "running in a VMware virtual machine", but "running on VMware"
is wrong.  There is supposedly some good legal reason for this related to
keeping our trademark.

On Tue, 25 Oct 2016 22:26:00 -0700, Alexey Makhalov 
wrote:
> Add basic paravirt support:
>  1. set pv_info.name to "VMware" to have proper boot log message
>   Booting paravirtualized kernel on VMware
> instead of "... on bare hardware"
>  2. set pv_cpu_ops.io_delay() to empty function - paravirt_nop() to
> avoid vm-exits on IO delays.
> 
> Signed-off-by: Alexey Makhalov 
> Acked-by: Alok N Kataria 
> ---
>  arch/x86/kernel/cpu/vmware.c | 12 
>  1 file changed, 12 insertions(+)
> 
> diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
> index 480790f..e3fb320 100644
> --- a/arch/x86/kernel/cpu/vmware.c
> +++ b/arch/x86/kernel/cpu/vmware.c
> @@ -61,6 +61,16 @@ static unsigned long vmware_get_tsc_khz(void)
>   return vmware_tsc_khz;
>  }
>  
> +#ifdef CONFIG_PARAVIRT
> +static void __init vmware_paravirt_ops_setup(void)
> +{
> + pv_info.name = "VMware";
> + pv_cpu_ops.io_delay = paravirt_nop;
> +}
> +#else
> +#define vmware_paravirt_ops_setup() do {} while (0)
> +#endif
> +
>  static void __init vmware_platform_setup(void)
>  {
>   uint32_t eax, ebx, ecx, edx;
> @@ -94,6 +104,8 @@ static void __init vmware_platform_setup(void)
>   } else {
>   pr_warn("Failed to get TSC freq from the hypervisor\n");
>   }
> +
> + vmware_paravirt_ops_setup();
>  }
>  
>  /*



-- 
Tim Mann  | work: m...@vmware.com  home: t...@tim-mann.org
VMware Sr. Staff Engineer | http://www.vmware.com  http://tim-mann.org

Re: [PATCH 2/3] x86/vmware: Add basic paravirt ops support

2016-10-26 Thread Tim Mann 
I believe our trademark guidelines say we aren't supposed to use VMware as a
noun to mean a product, only to mean the company.  So we can say "running on
VMware ESXi" or "running in a VMware virtual machine", but "running on VMware"
is wrong.  There is supposedly some good legal reason for this related to
keeping our trademark.

On Tue, 25 Oct 2016 22:26:00 -0700, Alexey Makhalov 
wrote:
> Add basic paravirt support:
>  1. set pv_info.name to "VMware" to have proper boot log message
>   Booting paravirtualized kernel on VMware
> instead of "... on bare hardware"
>  2. set pv_cpu_ops.io_delay() to empty function - paravirt_nop() to
> avoid vm-exits on IO delays.
> 
> Signed-off-by: Alexey Makhalov 
> Acked-by: Alok N Kataria 
> ---
>  arch/x86/kernel/cpu/vmware.c | 12 
>  1 file changed, 12 insertions(+)
> 
> diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
> index 480790f..e3fb320 100644
> --- a/arch/x86/kernel/cpu/vmware.c
> +++ b/arch/x86/kernel/cpu/vmware.c
> @@ -61,6 +61,16 @@ static unsigned long vmware_get_tsc_khz(void)
>   return vmware_tsc_khz;
>  }
>  
> +#ifdef CONFIG_PARAVIRT
> +static void __init vmware_paravirt_ops_setup(void)
> +{
> + pv_info.name = "VMware";
> + pv_cpu_ops.io_delay = paravirt_nop;
> +}
> +#else
> +#define vmware_paravirt_ops_setup() do {} while (0)
> +#endif
> +
>  static void __init vmware_platform_setup(void)
>  {
>   uint32_t eax, ebx, ecx, edx;
> @@ -94,6 +104,8 @@ static void __init vmware_platform_setup(void)
>   } else {
>   pr_warn("Failed to get TSC freq from the hypervisor\n");
>   }
> +
> + vmware_paravirt_ops_setup();
>  }
>  
>  /*



-- 
Tim Mann  | work: m...@vmware.com  home: t...@tim-mann.org
VMware Sr. Staff Engineer | http://www.vmware.com  http://tim-mann.org

[PATCH 2/3] x86/vmware: Add basic paravirt ops support

2016-10-25 Thread Alexey Makhalov 
Add basic paravirt support:
 1. set pv_info.name to "VMware" to have proper boot log message
Booting paravirtualized kernel on VMware
instead of "... on bare hardware"
 2. set pv_cpu_ops.io_delay() to empty function - paravirt_nop() to
avoid vm-exits on IO delays.

Signed-off-by: Alexey Makhalov 
Acked-by: Alok N Kataria 
---
 arch/x86/kernel/cpu/vmware.c | 12 
 1 file changed, 12 insertions(+)

diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index 480790f..e3fb320 100644
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -61,6 +61,16 @@ static unsigned long vmware_get_tsc_khz(void)
return vmware_tsc_khz;
 }
 
+#ifdef CONFIG_PARAVIRT
+static void __init vmware_paravirt_ops_setup(void)
+{
+   pv_info.name = "VMware";
+   pv_cpu_ops.io_delay = paravirt_nop;
+}
+#else
+#define vmware_paravirt_ops_setup() do {} while (0)
+#endif
+
 static void __init vmware_platform_setup(void)
 {
uint32_t eax, ebx, ecx, edx;
@@ -94,6 +104,8 @@ static void __init vmware_platform_setup(void)
} else {
pr_warn("Failed to get TSC freq from the hypervisor\n");
}
+
+   vmware_paravirt_ops_setup();
 }
 
 /*
-- 
2.10.1

[PATCH 2/3] x86/vmware: Add basic paravirt ops support

2016-10-25 Thread Alexey Makhalov 
Add basic paravirt support:
 1. set pv_info.name to "VMware" to have proper boot log message
Booting paravirtualized kernel on VMware
instead of "... on bare hardware"
 2. set pv_cpu_ops.io_delay() to empty function - paravirt_nop() to
avoid vm-exits on IO delays.

Signed-off-by: Alexey Makhalov 
Acked-by: Alok N Kataria 
---
 arch/x86/kernel/cpu/vmware.c | 12 
 1 file changed, 12 insertions(+)

diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index 480790f..e3fb320 100644
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -61,6 +61,16 @@ static unsigned long vmware_get_tsc_khz(void)
return vmware_tsc_khz;
 }
 
+#ifdef CONFIG_PARAVIRT
+static void __init vmware_paravirt_ops_setup(void)
+{
+   pv_info.name = "VMware";
+   pv_cpu_ops.io_delay = paravirt_nop;
+}
+#else
+#define vmware_paravirt_ops_setup() do {} while (0)
+#endif
+
 static void __init vmware_platform_setup(void)
 {
uint32_t eax, ebx, ecx, edx;
@@ -94,6 +104,8 @@ static void __init vmware_platform_setup(void)
} else {
pr_warn("Failed to get TSC freq from the hypervisor\n");
}
+
+   vmware_paravirt_ops_setup();
 }
 
 /*
-- 
2.10.1