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Re: [Xen-devel] [RFC 11/16] xen/arm: Detect silicon revision and set cap bits accordingly



Hi Konrad,

On 13/05/2016 21:37, Konrad Rzeszutek Wilk wrote:
diff --git a/xen/arch/arm/cpufeature.c b/xen/arch/arm/cpufeature.c
index 7a1b56b..aa7c5b1 100644
--- a/xen/arch/arm/cpufeature.c
+++ b/xen/arch/arm/cpufeature.c
@@ -24,6 +24,22 @@

  DECLARE_BITMAP(cpu_hwcaps, ARM_NCAPS);

+void update_cpu_capabilities(const struct arm_cpu_capabilities *caps,
+                             const char *info)
+{
+    int i;
+
+    for ( i = 0; caps[i].matches; i++ )
+    {
+        if ( !caps[i].matches(&caps[i]) )
+            continue;
+
+        if ( !cpus_have_cap(caps[i].capability) && caps[i].desc )
+            printk("%s: %s\n", info, caps[i].desc);

dprintk?

No, this message is useful to know the list of "features" available for the platform.

Regards,

--
Julien Grall

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