[Qemu-devel] [PATCH v1 1/1] riscv: Ensure the kernel start address is correctly cast

[Alistair Francis]

Cast the kernel start address to the target bit length.

This ensures that we calculate the initrd offset to a valid address for
the architecture.

Signed-off-by: Alistair Francis <alistair.fran...@wdc.com>
Suggested-by: Alexander Graf <ag...@suse.de>
Reported-by: Alexander Graf <ag...@suse.de>
---
 hw/riscv/sifive_e.c | 2 +-
 hw/riscv/sifive_u.c | 2 +-
 hw/riscv/spike.c    | 2 +-
 hw/riscv/virt.c     | 3 ++-
 4 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c
index cb513cc3bb..3427b840cb 100644
--- a/hw/riscv/sifive_e.c
+++ b/hw/riscv/sifive_e.c
@@ -74,7 +74,7 @@ static const struct MemmapEntry {
     [SIFIVE_E_DTIM] =     { 0x80000000,     0x4000 }
 };
 
-static uint64_t load_kernel(const char *kernel_filename)
+static target_ulong load_kernel(const char *kernel_filename)
 {
     uint64_t kernel_entry, kernel_high;
 
diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index ef07df2442..5d03a76a28 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -65,7 +65,7 @@ static const struct MemmapEntry {
 
 #define GEM_REVISION        0x10070109
 
-static uint64_t load_kernel(const char *kernel_filename)
+static target_ulong load_kernel(const char *kernel_filename)
 {
     uint64_t kernel_entry, kernel_high;
 
diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
index 268df04c3c..79cb4c1282 100644
--- a/hw/riscv/spike.c
+++ b/hw/riscv/spike.c
@@ -53,7 +53,7 @@ static const struct MemmapEntry {
     [SPIKE_DRAM] =     { 0x80000000,        0x0 },
 };
 
-static uint64_t load_kernel(const char *kernel_filename)
+static target_ulong load_kernel(const char *kernel_filename)
 {
     uint64_t kernel_entry, kernel_high;
 
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index 2b38f89070..f4cbf6aa21 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -57,7 +57,7 @@ static const struct MemmapEntry {
     [VIRT_DRAM] =     { 0x80000000,        0x0 },
 };
 
-static uint64_t load_kernel(const char *kernel_filename)
+static target_ulong load_kernel(const char *kernel_filename)
 {
     uint64_t kernel_entry, kernel_high;
 
@@ -85,6 +85,7 @@ static hwaddr load_initrd(const char *filename, uint64_t 
mem_size,
      * halfway into RAM, and for boards with 256MB of RAM or more we put
      * the initrd at 128MB.
      */
+    /* As hwaddr is a 64-bit number we need to cast it for 32-bit */
     *start = kernel_entry + MIN(mem_size / 2, 128 * MiB);
 
     size = load_ramdisk(filename, *start, mem_size - *start);
-- 
2.19.1