KVM: PPC: Fix emulated MMIO sign-extension

When the guest does a sign-extending load instruction (such as lha
or lwa) to an emulated MMIO location, it results in a call to
kvmppc_handle_loads() in the host.  That function sets the
vcpu->arch.mmio_sign_extend flag and calls kvmppc_handle_load()
to do the rest of the work.  However, kvmppc_handle_load() sets
the mmio_sign_extend flag to 0 unconditionally, so the sign
extension never gets done.

To fix this, we rename kvmppc_handle_load to __kvmppc_handle_load
and add an explicit parameter to indicate whether sign extension
is required.  kvmppc_handle_load() and kvmppc_handle_loads() then
become 1-line functions that just call __kvmppc_handle_load()
with the extra parameter.

Reported-by: Bin Lu <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>
Reviewed-by: Thomas Huth <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

0 files changed, 0 insertions, 0 deletions