[Xen-devel] [Qemu-devel] [PATCH v7 24/42] hw/isa: Declare device little or big endian

[<tony.nguyen@xxxxxx>]

For each device declared with DEVICE_NATIVE_ENDIAN, find the set of

targets from the set of target/hw/*/device.o.

If the set of targets are all little or all big endian, re-declare

the device endianness as DEVICE_LITTLE_ENDIAN or DEVICE_BIG_ENDIAN

respectively.

This *naive* deduction may result in genuinely native endian devices

being incorrectly declared as little or big endian, but should not

introduce regressions for current targets.

These devices should be re-declared as DEVICE_NATIVE_ENDIAN if 1) it

has a new target with an opposite endian or 2) someone informed knows

better =)

Signed-off-by: Tony Nguyen <tony.nguyen@xxxxxx>

---

 hw/isa/vt82c686.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/isa/vt82c686.c b/hw/isa/vt82c686.c

index 12c460590..adf65d3 100644

--- a/hw/isa/vt82c686.c

+++ b/hw/isa/vt82c686.c

@@ -108,7 +108,7 @@ static uint64_t superio_ioport_readb(void *opaque, hwaddr addr, unsigned size)

 static const MemoryRegionOps superio_ops = {

     .read = superio_ioport_readb,

     .write = superio_ioport_writeb,

-    .endianness = DEVICE_NATIVE_ENDIAN,

+    .endianness = DEVICE_LITTLE_ENDIAN,

     .impl = {

         .min_access_size = 1,

         .max_access_size = 1,

-- 

1.8.3.1

​

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