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From d07bebfe0f9a1e1cf3f25449d9c20d4c21c6e2a0 Mon Sep 17 00:00:00 2001
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Message-Id: <d07bebfe0f9a1e1cf3f25449d9c20d4c21c6e2a0.1387298827.git.minovotn@redhat.com>
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In-Reply-To: <3ed0fb61a3dc912ef036d7ef450bed192090709e.1387298827.git.minovotn@redhat.com>
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References: <3ed0fb61a3dc912ef036d7ef450bed192090709e.1387298827.git.minovotn@redhat.com>
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From: "Michael S. Tsirkin" <mst@redhat.com>
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Date: Tue, 17 Dec 2013 15:17:37 +0100
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Subject: [PATCH 19/56] q35: make pci window address/size match guest cfg
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RH-Author: Michael S. Tsirkin <mst@redhat.com>
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Message-id: <1387293161-4085-20-git-send-email-mst@redhat.com>
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Patchwork-id: 56325
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O-Subject: [PATCH qemu-kvm RHEL7.0 v2 19/57] q35: make pci window address/size match guest cfg
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Bugzilla: 1034876
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RH-Acked-by: Igor Mammedov <imammedo@redhat.com>
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RH-Acked-by: Marcel Apfelbaum <marcel.a@redhat.com>
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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For Q35, MMCFG address and size are guest configurable.
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Update w32 property to make it behave accordingly.
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry picked from commit 636228a887c4d5c0dc313bbf936de969b420a91a)
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Conflicts:
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hw/pci-host/q35.c
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---
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hw/pci-host/q35.c | 10 ++++++++++
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1 file changed, 10 insertions(+)
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Signed-off-by: Michal Novotny <minovotn@redhat.com>
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---
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hw/pci-host/q35.c | 10 ++++++++++
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1 file changed, 10 insertions(+)
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diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
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index be12eee..70ad01f 100644
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--- a/hw/pci-host/q35.c
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+++ b/hw/pci-host/q35.c
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@@ -207,6 +207,16 @@ static void mch_update_pciexbar(MCHPCIState *mch)
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}
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addr = pciexbar & addr_mask;
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pcie_host_mmcfg_update(&s->host, enable, addr, length);
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+ /* Leave enough space for the MCFG BAR */
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+ /*
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+ * TODO: this matches current bios behaviour, but it's not a power of two,
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+ * which means an MTRR can't cover it exactly.
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+ */
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+ if (enable) {
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+ mch->pci_info.w32.begin = addr + length;
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+ } else {
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+ mch->pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT;
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+ }
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}
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/* PAM */
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--
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1.7.11.7
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