From 45e96ea6b369539a37040a8df9c59a39f073d9d6 Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Sun, 20 Jan 2013 18:43:58 -0500 Subject: KVM: ARM: Handle I/O aborts When the guest accesses I/O memory this will create data abort exceptions and they are handled by decoding the HSR information (physical address, read/write, length, register) and forwarding reads and writes to QEMU which performs the device emulation. Certain classes of load/store operations do not support the syndrome information provided in the HSR. We don't support decoding these (patches are available elsewhere), so we report an error to user space in this case. This requires changing the general flow somewhat since new calls to run the VCPU must check if there's a pending MMIO load and perform the write after userspace has made the data available. Reviewed-by: Will Deacon Reviewed-by: Marcelo Tosatti Signed-off-by: Rusty Russell Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall --- arch/arm/kvm/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/kvm/Makefile') diff --git a/arch/arm/kvm/Makefile b/arch/arm/kvm/Makefile index 88edce6c97d4..1e45cd97a7fc 100644 --- a/arch/arm/kvm/Makefile +++ b/arch/arm/kvm/Makefile @@ -18,4 +18,4 @@ kvm-arm-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o) obj-y += kvm-arm.o init.o interrupts.o obj-y += arm.o guest.o mmu.o emulate.o reset.o -obj-y += coproc.o coproc_a15.o +obj-y += coproc.o coproc_a15.o mmio.o -- cgit