From: "Michael S. Tsirkin" <mst@xxxxxxxxxx> Date: Wed, 30 Dec 2015 23:36:29 +0200 > On Wed, Dec 30, 2015 at 03:46:46PM -0500, David Miller wrote: >> From: "Michael S. Tsirkin" <mst@xxxxxxxxxx> >> Date: Wed, 30 Dec 2015 14:58:19 +0200 >> >> > -. Patch 1 documents the __smp APIs, and explains why they are >> > useful for virt >> >> If virt is doing things like interacting with descriptors that are >> shared with a (potentially SMP) host, why don't we just annotate those >> specific cases? > > Using a bunch of per-arch ifdefs in virtio? > That's fundamentally what we have now. I was suggesting a generic interface to get what you want. virt_mb() or something like that. You can name it something else, that's not the important part. > Or do you mean wrappers for __smp_XXX that explicitly > say they are for talking to host? > E.g. pv_mb() pv_rmb() etc. > That sounds very reasonable to me. Exactly! -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
