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[v3,1/5] kvmtool: ARM: fix initrd functionality

Message ID 1418830848-1463-2-git-send-email-andre.przywara@arm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Andre Przywara Dec. 17, 2014, 3:40 p.m. UTC 
lkvm -i is currently broken on ARM/ARM64.
We should not try to convert smaller-than-4GB addresses into 64-bit
big endian and then stuff them into u32 variables if we expect to read
anything other than 0 out of it.
Adjust the type to u64 to write the proper address in BE format into
the /chosen node (and also match the address size we formely posted)
and let Linux thus read the right values.
This fixes initrd functionality for ARM and ARM64 guests.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
---
 tools/kvm/arm/fdt.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/tools/kvm/arm/fdt.c b/tools/kvm/arm/fdt.c
index 5626931..4a33846 100644
--- a/tools/kvm/arm/fdt.c
+++ b/tools/kvm/arm/fdt.c
@@ -149,8 +149,8 @@  static int setup_fdt(struct kvm *kvm)
 
 	/* Initrd */
 	if (kvm->arch.initrd_size != 0) {
-		u32 ird_st_prop = cpu_to_fdt64(kvm->arch.initrd_guest_start);
-		u32 ird_end_prop = cpu_to_fdt64(kvm->arch.initrd_guest_start +
+		u64 ird_st_prop = cpu_to_fdt64(kvm->arch.initrd_guest_start);
+		u64 ird_end_prop = cpu_to_fdt64(kvm->arch.initrd_guest_start +
 					       kvm->arch.initrd_size);
 
 		_FDT(fdt_property(fdt, "linux,initrd-start",