thr3ads.net - Xen devel - [PATCH] xen/hvm: If we fail to fetch an HVM parameter print out which flag it is. [Oct 2012]

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Konrad Rzeszutek Wilk

2012-Oct-19 19:03 UTC

[PATCH] xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.

Makes it easier to troubleshoot in the field.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
 include/xen/hvm.h |   31 +++++++++++++++++++++++++++++--
 1 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/include/xen/hvm.h b/include/xen/hvm.h
index b193fa2..c2a4238 100644
--- a/include/xen/hvm.h
+++ b/include/xen/hvm.h
@@ -5,6 +5,33 @@
 #include <xen/interface/hvm/params.h>
 #include <asm/xen/hypercall.h>
 
+static const char *param_name(int op)
+{
+	static const char *const names[] = {
+		[HVM_PARAM_CALLBACK_IRQ] = "HVM_PARAM_CALLBACK_IRQ",
+		[HVM_PARAM_STORE_PFN] = "HVM_PARAM_STORE_PFN",
+		[HVM_PARAM_STORE_EVTCHN] = "HVM_PARAM_STORE_EVTCHN",
+		[HVM_PARAM_PAE_ENABLED] = "HVM_PARAM_PAE_ENABLED",
+		[HVM_PARAM_IOREQ_PFN] = "HVM_PARAM_IOREQ_PFN",
+		[HVM_PARAM_BUFIOREQ_PFN] = "HVM_PARAM_BUFIOREQ_PFN",
+		[HVM_PARAM_TIMER_MODE] = "HVM_PARAM_TIMER_MODE",
+		[HVM_PARAM_HPET_ENABLED] = "HVM_PARAM_HPET_ENABLED",
+		[HVM_PARAM_IDENT_PT] = "HVM_PARAM_IDENT_PT",
+		[HVM_PARAM_DM_DOMAIN] = "HVM_PARAM_DM_DOMAIN",
+		[HVM_PARAM_ACPI_S_STATE] = "HVM_PARAM_ACPI_S_STATE",
+		[HVM_PARAM_VM86_TSS] = "HVM_PARAM_VM86_TSS",
+		[HVM_PARAM_VPT_ALIGN] = "HVM_PARAM_VPT_ALIGN",
+		[HVM_PARAM_CONSOLE_PFN] = "HVM_PARAM_CONSOLE_PFN",
+		[HVM_PARAM_CONSOLE_EVTCHN] = "HVM_PARAM_CONSOLE_EVTCHN" };
+
+	if (op >= ARRAY_SIZE(names))
+		return "unknown";
+
+	if (!names[op])
+		return "reserved";
+
+	return names[op];
+}
 static inline int hvm_get_parameter(int idx, uint64_t *value)
 {
 	struct xen_hvm_param xhv;
@@ -14,8 +41,8 @@ static inline int hvm_get_parameter(int idx, uint64_t *value)
 	xhv.index = idx;
 	r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
 	if (r < 0) {
-		printk(KERN_ERR "Cannot get hvm parameter %d: %d!\n",
-			idx, r);
+		printk(KERN_ERR "Cannot get hvm parameter %s (%d): %d!\n",
+			param_name(idx), idx, r);
 		return r;
 	}
 	*value = xhv.value;
-- 
1.7.7.6

Ian Campbell

2012-Oct-23 09:22 UTC

head link

Re: [Xen-devel] [PATCH] xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.

On Fri, 2012-10-19 at 20:03 +0100, Konrad Rzeszutek Wilk
wrote:> Makes it easier to troubleshoot in the field.
> 
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> ---
>  include/xen/hvm.h |   31 +++++++++++++++++++++++++++++--
>  1 files changed, 29 insertions(+), 2 deletions(-)
> 
> diff --git a/include/xen/hvm.h b/include/xen/hvm.h
> index b193fa2..c2a4238 100644
> --- a/include/xen/hvm.h
> +++ b/include/xen/hvm.h
> @@ -5,6 +5,33 @@
>  #include <xen/interface/hvm/params.h>
>  #include <asm/xen/hypercall.h>
>  
> +static const char *param_name(int op)
> +{
> +	static const char *const names[] = {
#define PARAM(x) [x] = STRINGIFY(x)
would save from typos due to doubling everything up.

Or even:
#define PARAM(x) [HVM_PARAM#_x] STRINGIFY(x)
> +		[HVM_PARAM_CALLBACK_IRQ] = "HVM_PARAM_CALLBACK_IRQ",
> +		[HVM_PARAM_STORE_PFN] = "HVM_PARAM_STORE_PFN",
> +		[HVM_PARAM_STORE_EVTCHN] = "HVM_PARAM_STORE_EVTCHN",
> +		[HVM_PARAM_PAE_ENABLED] = "HVM_PARAM_PAE_ENABLED",
> +		[HVM_PARAM_IOREQ_PFN] = "HVM_PARAM_IOREQ_PFN",
> +		[HVM_PARAM_BUFIOREQ_PFN] = "HVM_PARAM_BUFIOREQ_PFN",
> +		[HVM_PARAM_TIMER_MODE] = "HVM_PARAM_TIMER_MODE",
> +		[HVM_PARAM_HPET_ENABLED] = "HVM_PARAM_HPET_ENABLED",
> +		[HVM_PARAM_IDENT_PT] = "HVM_PARAM_IDENT_PT",
> +		[HVM_PARAM_DM_DOMAIN] = "HVM_PARAM_DM_DOMAIN",
> +		[HVM_PARAM_ACPI_S_STATE] = "HVM_PARAM_ACPI_S_STATE",
> +		[HVM_PARAM_VM86_TSS] = "HVM_PARAM_VM86_TSS",
> +		[HVM_PARAM_VPT_ALIGN] = "HVM_PARAM_VPT_ALIGN",
> +		[HVM_PARAM_CONSOLE_PFN] = "HVM_PARAM_CONSOLE_PFN",
> +		[HVM_PARAM_CONSOLE_EVTCHN] = "HVM_PARAM_CONSOLE_EVTCHN" };
You probably want a , and a newline before the }.
> +
> +	if (op >= ARRAY_SIZE(names))
> +		return "unknown";
> +
> +	if (!names[op])
> +		return "reserved";
> +
> +	return names[op];
> +}
>  static inline int hvm_get_parameter(int idx, uint64_t *value)
>  {
>  	struct xen_hvm_param xhv;
> @@ -14,8 +41,8 @@ static inline int hvm_get_parameter(int idx, uint64_t
*value)
>  	xhv.index = idx;
>  	r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
>  	if (r < 0) {
> -		printk(KERN_ERR "Cannot get hvm parameter %d: %d!\n",
> -			idx, r);
> +		printk(KERN_ERR "Cannot get hvm parameter %s (%d): %d!\n",
> +			param_name(idx), idx, r);
>  		return r;
>  	}
>  	*value = xhv.value;

Konrad Rzeszutek Wilk

2012-Nov-02 16:37 UTC

head link

Re: [Xen-devel] [PATCH] xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.

On Tue, Oct 23, 2012 at 10:22:18AM +0100, Ian Campbell
wrote:> On Fri, 2012-10-19 at 20:03 +0100, Konrad Rzeszutek Wilk wrote:
> > Makes it easier to troubleshoot in the field.
> > 
> > Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> > ---
> >  include/xen/hvm.h |   31 +++++++++++++++++++++++++++++--
> >  1 files changed, 29 insertions(+), 2 deletions(-)
> > 
> > diff --git a/include/xen/hvm.h b/include/xen/hvm.h
> > index b193fa2..c2a4238 100644
> > --- a/include/xen/hvm.h
> > +++ b/include/xen/hvm.h
> > @@ -5,6 +5,33 @@
> >  #include <xen/interface/hvm/params.h>
> >  #include <asm/xen/hypercall.h>
> >  
> > +static const char *param_name(int op)
> > +{
> > +	static const char *const names[] = {
> 
> #define PARAM(x) [x] = STRINGIFY(x)
> would save from typos due to doubling everything up.
> 
> Or even:
> #define PARAM(x) [HVM_PARAM#_x] STRINGIFY(x)
> 
> > +		[HVM_PARAM_CALLBACK_IRQ] = "HVM_PARAM_CALLBACK_IRQ",
> > +		[HVM_PARAM_STORE_PFN] = "HVM_PARAM_STORE_PFN",
> > +		[HVM_PARAM_STORE_EVTCHN] = "HVM_PARAM_STORE_EVTCHN",
> > +		[HVM_PARAM_PAE_ENABLED] = "HVM_PARAM_PAE_ENABLED",
> > +		[HVM_PARAM_IOREQ_PFN] = "HVM_PARAM_IOREQ_PFN",
> > +		[HVM_PARAM_BUFIOREQ_PFN] = "HVM_PARAM_BUFIOREQ_PFN",
> > +		[HVM_PARAM_TIMER_MODE] = "HVM_PARAM_TIMER_MODE",
> > +		[HVM_PARAM_HPET_ENABLED] = "HVM_PARAM_HPET_ENABLED",
> > +		[HVM_PARAM_IDENT_PT] = "HVM_PARAM_IDENT_PT",
> > +		[HVM_PARAM_DM_DOMAIN] = "HVM_PARAM_DM_DOMAIN",
> > +		[HVM_PARAM_ACPI_S_STATE] = "HVM_PARAM_ACPI_S_STATE",
> > +		[HVM_PARAM_VM86_TSS] = "HVM_PARAM_VM86_TSS",
> > +		[HVM_PARAM_VPT_ALIGN] = "HVM_PARAM_VPT_ALIGN",
> > +		[HVM_PARAM_CONSOLE_PFN] = "HVM_PARAM_CONSOLE_PFN",
> > +		[HVM_PARAM_CONSOLE_EVTCHN] = "HVM_PARAM_CONSOLE_EVTCHN"
};
> 
> You probably want a , and a newline before the }.
> 
> > +
> > +	if (op >= ARRAY_SIZE(names))
> > +		return "unknown";
> > +
> > +	if (!names[op])
> > +		return "reserved";
> > +
> > +	return names[op];
> > +}
> >  static inline int hvm_get_parameter(int idx, uint64_t *value)
> >  {
> >  	struct xen_hvm_param xhv;
> > @@ -14,8 +41,8 @@ static inline int hvm_get_parameter(int idx,
uint64_t *value)
> >  	xhv.index = idx;
> >  	r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
> >  	if (r < 0) {
> > -		printk(KERN_ERR "Cannot get hvm parameter %d: %d!\n",
> > -			idx, r);
> > +		printk(KERN_ERR "Cannot get hvm parameter %s (%d):
%d!\n",
> > +			param_name(idx), idx, r);
> >  		return r;
> >  	}
> >  	*value = xhv.value;
Like this?

From 66705b0ff8808d86c12fcb3815d849a848b5409b Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Fri, 19 Oct 2012 15:01:46 -0400
Subject: [PATCH] xen/hvm: If we fail to fetch an HVM parameter print out
 which flag it is.

Makes it easier to troubleshoot in the field.

[v1: Use macro per Ian''s suggestion]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
 include/xen/hvm.h | 34 ++++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/include/xen/hvm.h b/include/xen/hvm.h
index b193fa2..13e43e4 100644
--- a/include/xen/hvm.h
+++ b/include/xen/hvm.h
@@ -5,6 +5,36 @@
 #include <xen/interface/hvm/params.h>
 #include <asm/xen/hypercall.h>
 
+static const char *param_name(int op)
+{
+#define PARAM(x) [HVM_PARAM_##x] = #x
+	static const char *const names[] = {
+		PARAM(CALLBACK_IRQ),
+		PARAM(STORE_PFN),
+		PARAM(STORE_EVTCHN),
+		PARAM(PAE_ENABLED),
+		PARAM(IOREQ_PFN),
+		PARAM(BUFIOREQ_PFN),
+		PARAM(TIMER_MODE),
+		PARAM(HPET_ENABLED),
+		PARAM(IDENT_PT),
+		PARAM(DM_DOMAIN),
+		PARAM(ACPI_S_STATE),
+		PARAM(VM86_TSS),
+		PARAM(VPT_ALIGN),
+		PARAM(CONSOLE_PFN),
+		PARAM(CONSOLE_EVTCHN),
+	};
+#undef PARAM
+
+	if (op >= ARRAY_SIZE(names))
+		return "unknown";
+
+	if (!names[op])
+		return "reserved";
+
+	return names[op];
+}
 static inline int hvm_get_parameter(int idx, uint64_t *value)
 {
 	struct xen_hvm_param xhv;
@@ -14,8 +44,8 @@ static inline int hvm_get_parameter(int idx, uint64_t *value)
 	xhv.index = idx;
 	r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
 	if (r < 0) {
-		printk(KERN_ERR "Cannot get hvm parameter %d: %d!\n",
-			idx, r);
+		printk(KERN_ERR "Cannot get hvm parameter %s (%d): %d!\n",
+			param_name(idx), idx, r);
 		return r;
 	}
 	*value = xhv.value;
-- 
1.7.11.7

Ian Campbell

2012-Nov-05 10:25 UTC

head link

Re: [Xen-devel] [PATCH] xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.

On Fri, 2012-11-02 at 16:37 +0000, Konrad Rzeszutek Wilk
wrote:> Like this?
Yup. Although I''m not sure if it really needs to be inlined. I guess
it''s not an especially performance sensitve path though.
> 
> From 66705b0ff8808d86c12fcb3815d849a848b5409b Mon Sep 17 00:00:00 2001
> From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Date: Fri, 19 Oct 2012 15:01:46 -0400
> Subject: [PATCH] xen/hvm: If we fail to fetch an HVM parameter print out
>  which flag it is.
> 
> Makes it easier to troubleshoot in the field.
> 
> [v1: Use macro per Ian''s suggestion]
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
> ---
>  include/xen/hvm.h | 34 ++++++++++++++++++++++++++++++++--
>  1 file changed, 32 insertions(+), 2 deletions(-)
> 
> diff --git a/include/xen/hvm.h b/include/xen/hvm.h
> index b193fa2..13e43e4 100644
> --- a/include/xen/hvm.h
> +++ b/include/xen/hvm.h
> @@ -5,6 +5,36 @@
>  #include <xen/interface/hvm/params.h>
>  #include <asm/xen/hypercall.h>
>  
> +static const char *param_name(int op)
> +{
> +#define PARAM(x) [HVM_PARAM_##x] = #x
> +	static const char *const names[] = {
> +		PARAM(CALLBACK_IRQ),
> +		PARAM(STORE_PFN),
> +		PARAM(STORE_EVTCHN),
> +		PARAM(PAE_ENABLED),
> +		PARAM(IOREQ_PFN),
> +		PARAM(BUFIOREQ_PFN),
> +		PARAM(TIMER_MODE),
> +		PARAM(HPET_ENABLED),
> +		PARAM(IDENT_PT),
> +		PARAM(DM_DOMAIN),
> +		PARAM(ACPI_S_STATE),
> +		PARAM(VM86_TSS),
> +		PARAM(VPT_ALIGN),
> +		PARAM(CONSOLE_PFN),
> +		PARAM(CONSOLE_EVTCHN),
> +	};
> +#undef PARAM
> +
> +	if (op >= ARRAY_SIZE(names))
> +		return "unknown";
> +
> +	if (!names[op])
> +		return "reserved";
> +
> +	return names[op];
> +}
>  static inline int hvm_get_parameter(int idx, uint64_t *value)
>  {
>  	struct xen_hvm_param xhv;
> @@ -14,8 +44,8 @@ static inline int hvm_get_parameter(int idx, uint64_t
*value)
>  	xhv.index = idx;
>  	r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
>  	if (r < 0) {
> -		printk(KERN_ERR "Cannot get hvm parameter %d: %d!\n",
> -			idx, r);
> +		printk(KERN_ERR "Cannot get hvm parameter %s (%d): %d!\n",
> +			param_name(idx), idx, r);
>  		return r;
>  	}
>  	*value = xhv.value;

Xen devel - Oct 2012 - [PATCH] xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.

[PATCH] xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.

Re: [Xen-devel] [PATCH] xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.

Re: [Xen-devel] [PATCH] xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.

Re: [Xen-devel] [PATCH] xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.