On Sat, Jul 11, 2026 at 12:39:49AM +0530, Aneesh Kumar K.V wrote:

quoted

But if you really want to it should be
cc_platform_has(CC_ATTR_HOST_MEM_ENCRYPT) *only* and get rid of the wrong
force_dma_unencrypted().

Ok, I will update the changes to so we preserve the previous behaviour
for SME?

	if (attrs & DMA_ATTR_MMIO) {
		/*
		 * For host memory encryption treat MMIO memory as shared
		 */
		if (cc_platform_has(CC_ATTR_HOST_MEM_ENCRYPT))
			attrs |= DMA_ATTR_CC_SHARED;
	}

I'm OK with this, with the expectation we should aim to remove it when
fixing the callers.

quoted

But IMHO, I'd rather this series treat ATTR_MMIO as private MMIO and
ATTR_MMIO|CC_SHARED as shared MMIO and that's the right and correct
thing for the DMA API.

If you think the rest of the series is ready for upstream, could you
please ack it so it can be picked up for the next merge window? I'll
repost v8, rebased on top of the pKVM topic branch.

Yeah

Jason