Re: [PATCH v4 2/5] libxl: add support for PVH

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On 10/9/18 5:04 PM, Marek Marczykowski-Górecki wrote:
On Tue, Oct 09, 2018 at 04:45:01PM -0600, Jim Fehlig wrote:
On 10/7/18 9:39 AM, Marek Marczykowski-Górecki wrote:
@@ -647,6 +669,22 @@ libxlMakeDomBuildInfo(virDomainDefPtr def,
               return -1;
           }
   #endif
+    } else if (pvh) {
+        if (VIR_STRDUP(b_info->cmdline, def->os.cmdline) < 0)
+            return -1;
+        if (VIR_STRDUP(b_info->kernel, def->os.kernel) < 0)
+            return -1;
+        if (VIR_STRDUP(b_info->ramdisk, def->os.initrd) < 0)
+            return -1;
+#ifdef LIBXL_HAVE_BUILDINFO_BOOTLOADER
+        if (VIR_STRDUP(b_info->bootloader, def->os.bootloader) < 0)
+            return -1;
+        if (def->os.bootloaderArgs) {
+            if (!(b_info->bootloader_args =
+                  virStringSplit(def->os.bootloaderArgs, " \t\n", 0)))
+                return -1;
+        }
+#endif

This is probably fine, but AFAIK no bootloaders currently support pvh.
Juergen is working on support in grub2 but that seems to be a little ways
off.

This is independent of grub2 (which could be set as "kernel"), the
"bootloader" option here is about a program run _in dom0_ to find the
kernel to load, instead of providing a path directly (see xl.cfg(5)).

Yes of course. I had grub2 on the mind since I had just talked to Juergen about the status.

Like pygrub. And while I haven't tested it with PVH, I see no reason why
it shouldn't work.

Yep, agreed. As long as you don't mind poking at VM images in dom0 is should just work.

Regards,
Jim

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