Re: Running Xen on Nvidia Jetson-TK1

[Dushyant Behl <myselfdushyantbehl@gmail.com>]

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Hey Meng,

On Sat, May 14, 2016 at 7:39 AM, Meng Xu <xumengpanda@gmail.com> wrote:
>>
>> http://dev.ktemkin.com/misc/xenarm-gic-parents.patch
>
> It seems this link is invalid now...
> Has this patch been upstreamed?
>
> Hi Dushyant,
> Could you help repost this patch in this email if it's not that large?
> (Since we used the same repo, which is IanC's, it may be even better
> if you could kindly share the patch based on the tegra-tk1-jetson-v1
> branch of Ian's repo.?)

The patch is attached with the mail.

Thanks,
Dushyant

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diff --git a/sources/xen-ijc-tegra-hacking/xen/arch/arm/domain_build.c b/sources/xen-ijc-tegra-hacking/xen/arch/arm/domain_build.c
index ee27930..ce56410 100644
--- a/sources/xen-ijc-tegra-hacking/xen/arch/arm/domain_build.c
+++ b/sources/xen-ijc-tegra-hacking/xen/arch/arm/domain_build.c
@@ -784,8 +784,8 @@ static int make_gic_node(const struct domain *d, void *fdt,
 {
     const struct dt_device_node *gic = dt_interrupt_controller;
     int res = 0;
-    const void *addrcells;
-    u32 addrcells_len;
+    const void *addrcells, *iparent;
+    u32 addrcells_len, iparent_len;
 
     /*
      * Xen currently supports only a single GIC. Discard any secondary
@@ -815,6 +815,16 @@ static int make_gic_node(const struct domain *d, void *fdt,
             return res;
     }
 
+    // TODO: Ideally, the GIC's parent should always be equal to its phandle.
+    // Perhaps we should validate this?
+    iparent = dt_get_property(gic, "interrupt-parent", &iparent_len);
+    if ( iparent )
+    {
+        res = fdt_property(fdt, "interrupt-parent", iparent, iparent_len);
+        if ( res )
+          return res;
+    }
+
     addrcells = dt_get_property(gic, "#address-cells", &addrcells_len);
     if ( addrcells )
     {

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