From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34840) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dgAs2-00017D-Go for qemu-devel@nongnu.org; Fri, 11 Aug 2017 10:25:03 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dgAs1-0002Y3-Ez for qemu-devel@nongnu.org; Fri, 11 Aug 2017 10:25:02 -0400 From: Eric Auger Date: Fri, 11 Aug 2017 16:22:31 +0200 Message-Id: <1502461354-11327-7-git-send-email-eric.auger@redhat.com> In-Reply-To: <1502461354-11327-1-git-send-email-eric.auger@redhat.com> References: <1502461354-11327-1-git-send-email-eric.auger@redhat.com> Subject: [Qemu-devel] [RFC v6 6/9] hw/arm/virt: Add tlbi-on-map property to the smmuv3 node List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: eric.auger.pro@gmail.com, eric.auger@redhat.com, peter.maydell@linaro.org, qemu-arm@nongnu.org, qemu-devel@nongnu.org, alex.williamson@redhat.com, prem.mallappa@gmail.com Cc: drjones@redhat.com, christoffer.dall@linaro.org, Radha.Chintakuntla@cavium.com, Sunil.Goutham@cavium.com, mohun106@gmail.com, tcain@qti.qualcomm.com, bharat.bhushan@nxp.com, tn@semihalf.com, mst@redhat.com, will.deacon@arm.com, jean-philippe.brucker@arm.com, robin.murphy@arm.com, peterx@redhat.com, edgar.iglesias@gmail.com For VFIO integration we need to update physical IOMMU mappings each time the guest updates the vIOMMU translation structures. For that, we rely on a special smmuv3 option, "tlbi-on-map" which forces TLB invalidations on map (this mode is similar to the Intel VTD caching Mode). The smmuv3 driver then sends SMMU_CMD_TLBI_NH_VA commands, upon which we will update the physical mappings. Signed-off-by: Eric Auger --- hw/arm/virt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index b758173..c2ac8c6 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1034,6 +1034,7 @@ static void create_smmu(const VirtMachineState *vms, qemu_irq *pic) qemu_fdt_setprop_cell(vms->fdt, smmu, "clocks", vms->clock_phandle); qemu_fdt_setprop_string(vms->fdt, smmu, "clock-names", "apb_pclk"); qemu_fdt_setprop(vms->fdt, smmu, "dma-coherent", NULL, 0); + qemu_fdt_setprop(vms->fdt, smmu, "tlbi-on-map", NULL, 0); qemu_fdt_setprop_cell(vms->fdt, smmu, "#iommu-cells", 1); -- 2.5.5