[PATCH] hw/ppc/pnv: Improve kernel/initrd load failure error messages

[Vishal Chourasia <vishalc@linux.ibm.com>]

When QEMU fails to load the kernel or initrd image, it previously emitted
a generic error message such as:

  qemu-system-ppc64: Could not load kernel 'vmlinux'

This provides little context on why the failure occurred, which can make
debugging difficult, especially for new users or when dealing with large
images.

The new messages also include the configured size limits (in MiB) to help
users verify that their image files are within acceptable bounds.

Signed-off-by: Vishal Chourasia <vishalc@linux.ibm.com>
---
 hw/ppc/pnv.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index f0469cdb8b..dbecb721c1 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -1084,6 +1084,10 @@ static void pnv_init(MachineState *machine)
         if (kernel_size < 0) {
             error_report("Could not load kernel '%s'",
                          machine->kernel_filename);
+            error_report(
+                "Possible reasons: file not found, permission denied, or size "
+                "exceeds the maximum supported limit (%ld MiB).",
+                KERNEL_MAX_SIZE / 1024 / 1024);
             exit(1);
         }
     }
@@ -1096,6 +1100,10 @@ static void pnv_init(MachineState *machine)
         if (pnv->initrd_size < 0) {
             error_report("Could not load initial ram disk '%s'",
                          machine->initrd_filename);
+            error_report(
+                "Possible reasons: file not found, permission denied, or size "
+                "exceeds the maximum supported limit (%ld MiB).",
+                INITRD_MAX_SIZE / 1024 / 1024);
             exit(1);
         }
     }
-- 
2.51.0