From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:52387) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gkT7h-0004zj-6O for qemu-devel@nongnu.org; Fri, 18 Jan 2019 07:19:45 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gkT7g-0001TB-G7 for qemu-devel@nongnu.org; Fri, 18 Jan 2019 07:19:45 -0500 From: Cornelia Huck Date: Fri, 18 Jan 2019 13:19:20 +0100 Message-Id: <20190118121925.24468-7-cohuck@redhat.com> In-Reply-To: <20190118121925.24468-1-cohuck@redhat.com> References: <20190118121925.24468-1-cohuck@redhat.com> Subject: [Qemu-devel] [PULL 06/11] s390x/pci: Set the iommu region size mpcifc request List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Maydell Cc: qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Pierre Morel , Cornelia Huck From: Pierre Morel The size of the accessible iommu memory region in the guest is given to the IOMMU by the guest through the mpcifc request specifying the PCI Base Address and the PCI Address Limit. Let's set the size of the IOMMU region to: (PCI Address Limit) - (PCI Base Address) + 1. Fixes: f7c40aa1e7 ("s390x/pci: fix failures of dma map/unmap") Signed-off-by: Pierre Morel Message-Id: <1547125207-16907-2-git-send-email-pmorel@linux.ibm.com> Acked-by: Collin Walling Signed-off-by: Cornelia Huck --- hw/s390x/s390-pci-bus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c index 1579989213..400d9e4f28 100644 --- a/hw/s390x/s390-pci-bus.c +++ b/hw/s390x/s390-pci-bus.c @@ -660,7 +660,7 @@ void s390_pci_iommu_enable(S390PCIIOMMU *iommu) char *name = g_strdup_printf("iommu-s390-%04x", iommu->pbdev->uid); memory_region_init_iommu(&iommu->iommu_mr, sizeof(iommu->iommu_mr), TYPE_S390_IOMMU_MEMORY_REGION, OBJECT(&iommu->mr), - name, iommu->pal + 1); + name, iommu->pal - iommu->pba + 1); iommu->enabled = true; memory_region_add_subregion(&iommu->mr, 0, MEMORY_REGION(&iommu->iommu_mr)); g_free(name); -- 2.17.2