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From e27159f910abe099eba5d6959ace2f2de42e5f46 Mon Sep 17 00:00:00 2001
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Message-Id: <e27159f910abe099eba5d6959ace2f2de42e5f46.1387298827.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 15:17:34 +0100
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Subject: [PATCH 18/56] pc: limit 64 bit hole to 2G by default
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Michael S. Tsirkin <mst@redhat.com>
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Message-id: <1387293161-4085-19-git-send-email-mst@redhat.com>
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Patchwork-id: 56324
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O-Subject: [PATCH qemu-kvm RHEL7.0 v2 18/57] pc: limit 64 bit hole to 2G by default
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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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From: Igor Mammedov <imammedo@redhat.com>
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It turns out that some 32 bit windows guests crash
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if 64 bit PCI hole size is >2G.
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Limit it to 2G for piix and q35 by default.
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User may override default 64-bit PCI hole size by
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using "pci-hole64-size" property.
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Examples:
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-global i440FX-pcihost.pci-hole64-size=4G
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-global q35-pcihost.pci-hole64-size=4G
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Reported-by: Igor Mammedov <imammedo@redhat.com>,
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Igor Mammedov <imammedo@redhat.com>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Reviewed-by: Andreas Fรคrber <afaerber@suse.de>
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Message-id: 1375109277-25561-8-git-send-email-imammedo@redhat.com
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Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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(cherry picked from commit 398489018183d613306ab022653552247d93919f)
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Conflicts:
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	hw/i386/pc.c
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	hw/pci-host/piix.c
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	hw/pci-host/q35.c
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---
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 include/hw/i386/pc.h      | 14 +++++--
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 include/hw/pci-host/q35.h |  2 +
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 hw/i386/pc.c              | 56 ++++++++++++++++-----------
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 hw/i386/pc_piix.c         | 14 +------
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 hw/pci-host/piix.c        | 99 ++++++++++++++++++++++++++++++++++++++++++++---
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 hw/pci-host/q35.c         | 88 ++++++++++++++++++++++++++++++++++-------
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 6 files changed, 215 insertions(+), 58 deletions(-)
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Signed-off-by: Michal Novotny <minovotn@redhat.com>
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---
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 hw/i386/pc.c              | 56 ++++++++++++++++-----------
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 hw/i386/pc_piix.c         | 14 +------
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 hw/pci-host/piix.c        | 99 ++++++++++++++++++++++++++++++++++++++++++++---
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 hw/pci-host/q35.c         | 88 ++++++++++++++++++++++++++++++++++-------
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 include/hw/i386/pc.h      | 14 +++++--
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 include/hw/pci-host/q35.h |  2 +
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 6 files changed, 215 insertions(+), 58 deletions(-)
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diff --git a/hw/i386/pc.c b/hw/i386/pc.c
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index 9d9f5d2..e5ebd52 100644
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--- a/hw/i386/pc.c
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+++ b/hw/i386/pc.c
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@@ -55,6 +55,7 @@
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 #include "hw/acpi/acpi.h"
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 #include "hw/cpu/icc_bus.h"
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 #include "hw/boards.h"
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+#include "hw/pci/pci_host.h"
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 /* debug PC/ISA interrupts */
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 //#define DEBUG_IRQ
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@@ -996,15 +997,27 @@ typedef struct PcRomPciInfo {
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 static void pc_fw_cfg_guest_info(PcGuestInfo *guest_info)
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 {
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     PcRomPciInfo *info;
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+    Object *pci_info;
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+    bool ambiguous = false;
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+
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     if (!guest_info->has_pci_info || !guest_info->fw_cfg) {
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         return;
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     }
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+    pci_info = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
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+    g_assert(!ambiguous);
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+    if (!pci_info) {
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+        return;
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+    }
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     info = g_malloc(sizeof *info);
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-    info->w32_min = cpu_to_le64(guest_info->pci_info.w32.begin);
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-    info->w32_max = cpu_to_le64(guest_info->pci_info.w32.end);
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-    info->w64_min = cpu_to_le64(guest_info->pci_info.w64.begin);
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-    info->w64_max = cpu_to_le64(guest_info->pci_info.w64.end);
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+    info->w32_min = cpu_to_le64(object_property_get_int(pci_info,
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+                                PCI_HOST_PROP_PCI_HOLE_START, NULL));
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+    info->w32_max = cpu_to_le64(object_property_get_int(pci_info,
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+                                PCI_HOST_PROP_PCI_HOLE_END, NULL));
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+    info->w64_min = cpu_to_le64(object_property_get_int(pci_info,
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+                                PCI_HOST_PROP_PCI_HOLE64_START, NULL));
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+    info->w64_max = cpu_to_le64(object_property_get_int(pci_info,
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+                                PCI_HOST_PROP_PCI_HOLE64_END, NULL));
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     /* Pass PCI hole info to guest via a side channel.
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      * Required so guest PCI enumeration does the right thing. */
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     fw_cfg_add_file(guest_info->fw_cfg, "etc/pci-info", info, sizeof *info);
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@@ -1030,29 +1043,28 @@ PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size,
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     PcGuestInfoState *guest_info_state = g_malloc0(sizeof *guest_info_state);
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     PcGuestInfo *guest_info = &guest_info_state->info;
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-    guest_info->pci_info.w32.end = IO_APIC_DEFAULT_ADDRESS;
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-    if (sizeof(hwaddr) == 4) {
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-        guest_info->pci_info.w64.begin = 0;
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-        guest_info->pci_info.w64.end = 0;
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-    } else {
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-        /*
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-         * BIOS does not set MTRR entries for the 64 bit window, so no need to
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-         * align address to power of two.  Align address at 1G, this makes sure
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-         * it can be exactly covered with a PAT entry even when using huge
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-         * pages.
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-         */
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-        guest_info->pci_info.w64.begin =
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-            ROUND_UP((0x1ULL << 32) + above_4g_mem_size, 0x1ULL << 30);
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-        guest_info->pci_info.w64.end = guest_info->pci_info.w64.begin +
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-            (0x1ULL << 62);
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-        assert(guest_info->pci_info.w64.begin <= guest_info->pci_info.w64.end);
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-    }
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-
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     guest_info_state->machine_done.notify = pc_guest_info_machine_done;
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     qemu_add_machine_init_done_notifier(&guest_info_state->machine_done);
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     return guest_info;
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 }
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+void pc_init_pci64_hole(PcPciInfo *pci_info, uint64_t pci_hole64_start,
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+                        uint64_t pci_hole64_size)
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+{
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+    if ((sizeof(hwaddr) == 4) || (!pci_hole64_size)) {
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+        return;
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+    }
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+    /*
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+     * BIOS does not set MTRR entries for the 64 bit window, so no need to
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+     * align address to power of two.  Align address at 1G, this makes sure
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+     * it can be exactly covered with a PAT entry even when using huge
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+     * pages.
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+     */
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+    pci_info->w64.begin = ROUND_UP(pci_hole64_start, 0x1ULL << 30);
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+    pci_info->w64.end = pci_info->w64.begin + pci_hole64_size;
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+    assert(pci_info->w64.begin <= pci_info->w64.end);
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+}
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+
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 void pc_acpi_init(const char *default_dsdt)
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 {
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     char *filename;
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diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
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index 6d50a4e..211ff8e 100644
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--- a/hw/i386/pc_piix.c
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+++ b/hw/i386/pc_piix.c
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@@ -125,15 +125,6 @@ static void pc_init1(QEMUMachineInitArgs *args,
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     guest_info = pc_guest_info_init(below_4g_mem_size, above_4g_mem_size);
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     guest_info->has_pci_info = has_pci_info;
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-    /* Set PCI window size the way seabios has always done it. */
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-    /* Power of 2 so bios can cover it with a single MTRR */
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-    if (ram_size <= 0x80000000)
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-        guest_info->pci_info.w32.begin = 0x80000000;
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-    else if (ram_size <= 0xc0000000)
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-        guest_info->pci_info.w32.begin = 0xc0000000;
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-    else
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-        guest_info->pci_info.w32.begin = 0xe0000000;
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-
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     /* allocate ram and load rom/bios */
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     if (!xen_enabled()) {
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         fw_cfg = pc_memory_init(system_memory,
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@@ -157,10 +148,7 @@ static void pc_init1(QEMUMachineInitArgs *args,
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                               system_memory, system_io, args->ram_size,
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                               below_4g_mem_size,
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                               0x100000000ULL - below_4g_mem_size,
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-                              0x100000000ULL + above_4g_mem_size,
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-                              (sizeof(hwaddr) == 4
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-                               ? 0
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-                               : ((uint64_t)1 << 62)),
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+                              above_4g_mem_size,
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                               pci_memory, ram_memory);
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     } else {
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         pci_bus = NULL;
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diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
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index adc094a..167d1fd 100644
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--- a/hw/pci-host/piix.c
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+++ b/hw/pci-host/piix.c
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@@ -32,6 +32,8 @@
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 #include "hw/xen/xen.h"
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 #include "hw/pci-host/pam.h"
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 #include "sysemu/sysemu.h"
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+#include "hw/i386/ioapic.h"
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+#include "qapi/visitor.h"
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 /*
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  * I440FX chipset data sheet.
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@@ -44,6 +46,8 @@
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 typedef struct I440FXState {
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     PCIHostState parent_obj;
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+    PcPciInfo pci_info;
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+    uint64_t pci_hole64_size;
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 } I440FXState;
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 #define PIIX_NUM_PIC_IRQS       16      /* i8259 * 2 */
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@@ -201,9 +205,49 @@ static const VMStateDescription vmstate_i440fx = {
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     }
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 };
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+static void i440fx_pcihost_get_pci_hole_start(Object *obj, Visitor *v,
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+                                              void *opaque, const char *name,
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+                                              Error **errp)
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+{
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+    I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj);
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+    uint32_t value = s->pci_info.w32.begin;
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+
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+    visit_type_uint32(v, &value, name, errp);
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+}
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+
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+static void i440fx_pcihost_get_pci_hole_end(Object *obj, Visitor *v,
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+                                            void *opaque, const char *name,
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+                                            Error **errp)
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+{
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+    I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj);
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+    uint32_t value = s->pci_info.w32.end;
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+
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+    visit_type_uint32(v, &value, name, errp);
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+}
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+
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+static void i440fx_pcihost_get_pci_hole64_start(Object *obj, Visitor *v,
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+                                                void *opaque, const char *name,
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+                                                Error **errp)
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+{
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+    I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj);
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+
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+    visit_type_uint64(v, &s->pci_info.w64.begin, name, errp);
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+}
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+
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+static void i440fx_pcihost_get_pci_hole64_end(Object *obj, Visitor *v,
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+                                              void *opaque, const char *name,
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+                                              Error **errp)
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+{
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+    I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj);
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+
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+    visit_type_uint64(v, &s->pci_info.w64.end, name, errp);
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+}
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+
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 static int i440fx_pcihost_initfn(SysBusDevice *dev)
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 {
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     PCIHostState *s = PCI_HOST_BRIDGE(dev);
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+    I440FXState *d = I440FX_PCI_HOST_BRIDGE(s);
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+    Object *obj = OBJECT(s);
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     memory_region_init_io(&s->conf_mem, &pci_host_conf_le_ops, s,
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                           "pci-conf-idx", 4);
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@@ -212,6 +256,27 @@ static int i440fx_pcihost_initfn(SysBusDevice *dev)
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     memory_region_init_io(&s->data_mem, &pci_host_data_le_ops, s,
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                           "pci-conf-data", 4);
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+
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+    object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_START, "int",
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+                        i440fx_pcihost_get_pci_hole_start,
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+                        NULL, NULL, NULL, NULL);
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+
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+    object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_END, "int",
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+                        i440fx_pcihost_get_pci_hole_end,
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+                        NULL, NULL, NULL, NULL);
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+
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+    object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_START, "int",
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+                        i440fx_pcihost_get_pci_hole64_start,
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+                        NULL, NULL, NULL, NULL);
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+
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+    object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_END, "int",
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+                        i440fx_pcihost_get_pci_hole64_end,
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+                        NULL, NULL, NULL, NULL);
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+
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+    d->pci_info.w32.end = IO_APIC_DEFAULT_ADDRESS;
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+
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+    memory_region_init_io(&s->data_mem, &pci_host_data_le_ops, s,
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+                          "pci-conf-data", 4);
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     sysbus_add_io(dev, 0xcfc, &s->data_mem);
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     sysbus_init_ioports(&s->busdev, 0xcfc, 4);
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@@ -236,8 +301,7 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
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                     ram_addr_t ram_size,
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                     hwaddr pci_hole_start,
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                     hwaddr pci_hole_size,
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-                    hwaddr pci_hole64_start,
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-                    hwaddr pci_hole64_size,
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+                    ram_addr_t above_4g_mem_size,
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                     MemoryRegion *pci_address_space,
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                     MemoryRegion *ram_memory)
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 {
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@@ -248,6 +312,7 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
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     PIIX3State *piix3;
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     PCII440FXState *f;
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     unsigned i;
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+    I440FXState *i440fx;
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     dev = qdev_create(NULL, TYPE_I440FX_PCI_HOST_BRIDGE);
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     s = PCI_HOST_BRIDGE(dev);
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@@ -263,14 +328,31 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
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     f->system_memory = address_space_mem;
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     f->pci_address_space = pci_address_space;
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     f->ram_memory = ram_memory;
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+
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+    i440fx = I440FX_PCI_HOST_BRIDGE(dev);
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+    /* Set PCI window size the way seabios has always done it. */
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+    /* Power of 2 so bios can cover it with a single MTRR */
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+    if (ram_size <= 0x80000000) {
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+        i440fx->pci_info.w32.begin = 0x80000000;
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+    } else if (ram_size <= 0xc0000000) {
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+        i440fx->pci_info.w32.begin = 0xc0000000;
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+    } else {
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+        i440fx->pci_info.w32.begin = 0xe0000000;
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+    }
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+
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     memory_region_init_alias(&f->pci_hole, "pci-hole", f->pci_address_space,
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                              pci_hole_start, pci_hole_size);
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     memory_region_add_subregion(f->system_memory, pci_hole_start, &f->pci_hole);
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+
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+    pc_init_pci64_hole(&i440fx->pci_info, 0x100000000ULL + above_4g_mem_size,
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+                       i440fx->pci_hole64_size);
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     memory_region_init_alias(&f->pci_hole_64bit, "pci-hole64",
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                              f->pci_address_space,
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-                             pci_hole64_start, pci_hole64_size);
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-    if (pci_hole64_size) {
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-        memory_region_add_subregion(f->system_memory, pci_hole64_start,
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+                             i440fx->pci_info.w64.begin,
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+                             i440fx->pci_hole64_size);
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+    if (i440fx->pci_hole64_size) {
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+        memory_region_add_subregion(f->system_memory,
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+                                    i440fx->pci_info.w64.begin,
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                                     &f->pci_hole_64bit);
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     }
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     memory_region_init_alias(&f->smram_region, "smram-region",
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@@ -621,6 +703,12 @@ static const TypeInfo i440fx_info = {
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     .class_init    = i440fx_class_init,
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 };
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+static Property i440fx_props[] = {
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+    DEFINE_PROP_SIZE(PCI_HOST_PROP_PCI_HOLE64_SIZE, I440FXState,
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+                     pci_hole64_size, DEFAULT_PCI_HOLE64_SIZE),
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+    DEFINE_PROP_END_OF_LIST(),
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+};
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+
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 static void i440fx_pcihost_class_init(ObjectClass *klass, void *data)
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 {
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     DeviceClass *dc = DEVICE_CLASS(klass);
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@@ -628,6 +716,7 @@ static void i440fx_pcihost_class_init(ObjectClass *klass, void *data)
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     k->init = i440fx_pcihost_initfn;
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     dc->fw_name = "pci";
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+    dc->props = i440fx_props;
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 }
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 static const TypeInfo i440fx_pcihost_info = {
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diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
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index 0989fc5..be12eee 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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@@ -29,6 +29,7 @@
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  */
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 #include "hw/hw.h"
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 #include "hw/pci-host/q35.h"
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+#include "qapi/visitor.h"
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 /****************************************************************************
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  * Q35 host
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@@ -63,9 +64,49 @@ static int q35_host_init(SysBusDevice *dev)
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     return 0;
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 }
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+static void q35_host_get_pci_hole_start(Object *obj, Visitor *v,
0a122b
+                                        void *opaque, const char *name,
0a122b
+                                        Error **errp)
0a122b
+{
0a122b
+    Q35PCIHost *s = Q35_HOST_DEVICE(obj);
0a122b
+    uint32_t value = s->mch.pci_info.w32.begin;
0a122b
+
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+    visit_type_uint32(v, &value, name, errp);
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+}
0a122b
+
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+static void q35_host_get_pci_hole_end(Object *obj, Visitor *v,
0a122b
+                                      void *opaque, const char *name,
0a122b
+                                      Error **errp)
0a122b
+{
0a122b
+    Q35PCIHost *s = Q35_HOST_DEVICE(obj);
0a122b
+    uint32_t value = s->mch.pci_info.w32.end;
0a122b
+
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+    visit_type_uint32(v, &value, name, errp);
0a122b
+}
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+
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+static void q35_host_get_pci_hole64_start(Object *obj, Visitor *v,
0a122b
+                                          void *opaque, const char *name,
0a122b
+                                          Error **errp)
0a122b
+{
0a122b
+    Q35PCIHost *s = Q35_HOST_DEVICE(obj);
0a122b
+
0a122b
+    visit_type_uint64(v, &s->mch.pci_info.w64.begin, name, errp);
0a122b
+}
0a122b
+
0a122b
+static void q35_host_get_pci_hole64_end(Object *obj, Visitor *v,
0a122b
+                                        void *opaque, const char *name,
0a122b
+                                        Error **errp)
0a122b
+{
0a122b
+    Q35PCIHost *s = Q35_HOST_DEVICE(obj);
0a122b
+
0a122b
+    visit_type_uint64(v, &s->mch.pci_info.w64.end, name, errp);
0a122b
+}
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+
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 static Property mch_props[] = {
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     DEFINE_PROP_UINT64("MCFG", Q35PCIHost, host.base_addr,
0a122b
                         MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT),
0a122b
+    DEFINE_PROP_SIZE(PCI_HOST_PROP_PCI_HOLE64_SIZE, Q35PCIHost,
0a122b
+                     mch.pci_hole64_size, DEFAULT_PCI_HOLE64_SIZE),
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     DEFINE_PROP_END_OF_LIST(),
0a122b
 };
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0a122b
@@ -88,6 +129,31 @@ static void q35_host_initfn(Object *obj)
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     object_property_add_child(OBJECT(s), "mch", OBJECT(&s->mch), NULL);
0a122b
     qdev_prop_set_uint32(DEVICE(&s->mch), "addr", PCI_DEVFN(0, 0));
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     qdev_prop_set_bit(DEVICE(&s->mch), "multifunction", false);
0a122b
+
0a122b
+    object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_START, "int",
0a122b
+                        q35_host_get_pci_hole_start,
0a122b
+                        NULL, NULL, NULL, NULL);
0a122b
+
0a122b
+    object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_END, "int",
0a122b
+                        q35_host_get_pci_hole_end,
0a122b
+                        NULL, NULL, NULL, NULL);
0a122b
+
0a122b
+    object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_START, "int",
0a122b
+                        q35_host_get_pci_hole64_start,
0a122b
+                        NULL, NULL, NULL, NULL);
0a122b
+
0a122b
+    object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_END, "int",
0a122b
+                        q35_host_get_pci_hole64_end,
0a122b
+                        NULL, NULL, NULL, NULL);
0a122b
+
0a122b
+    /* Leave enough space for the biggest MCFG BAR */
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+    /* TODO: this matches current bios behaviour, but
0a122b
+     * it's not a power of two, which means an MTRR
0a122b
+     * can't cover it exactly.
0a122b
+     */
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+    s->mch.pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT +
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+        MCH_HOST_BRIDGE_PCIEXBAR_MAX;
0a122b
+    s->mch.pci_info.w32.end = IO_APIC_DEFAULT_ADDRESS;
0a122b
 }
0a122b
 
0a122b
 static const TypeInfo q35_host_info = {
0a122b
@@ -242,17 +308,8 @@ static void mch_reset(DeviceState *qdev)
0a122b
 static int mch_init(PCIDevice *d)
0a122b
 {
0a122b
     int i;
0a122b
-    hwaddr pci_hole64_size;
0a122b
     MCHPCIState *mch = MCH_PCI_DEVICE(d);
0a122b
 
0a122b
-    /* Leave enough space for the biggest MCFG BAR */
0a122b
-    /* TODO: this matches current bios behaviour, but
0a122b
-     * it's not a power of two, which means an MTRR
0a122b
-     * can't cover it exactly.
0a122b
-     */
0a122b
-    mch->guest_info->pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT +
0a122b
-        MCH_HOST_BRIDGE_PCIEXBAR_MAX;
0a122b
-
0a122b
     /* setup pci memory regions */
0a122b
     memory_region_init_alias(&mch->pci_hole, "pci-hole",
0a122b
                              mch->pci_address_space,
0a122b
@@ -260,15 +317,16 @@ static int mch_init(PCIDevice *d)
0a122b
                              0x100000000ULL - mch->below_4g_mem_size);
0a122b
     memory_region_add_subregion(mch->system_memory, mch->below_4g_mem_size,
0a122b
                                 &mch->pci_hole);
0a122b
-    pci_hole64_size = (sizeof(hwaddr) == 4 ? 0 :
0a122b
-                       ((uint64_t)1 << 62));
0a122b
+
0a122b
+    pc_init_pci64_hole(&mch->pci_info, 0x100000000ULL + mch->above_4g_mem_size,
0a122b
+                       mch->pci_hole64_size);
0a122b
     memory_region_init_alias(&mch->pci_hole_64bit, "pci-hole64",
0a122b
                              mch->pci_address_space,
0a122b
-                             0x100000000ULL + mch->above_4g_mem_size,
0a122b
-                             pci_hole64_size);
0a122b
-    if (pci_hole64_size) {
0a122b
+                             mch->pci_info.w64.begin,
0a122b
+                             mch->pci_hole64_size);
0a122b
+    if (mch->pci_hole64_size) {
0a122b
         memory_region_add_subregion(mch->system_memory,
0a122b
-                                    0x100000000ULL + mch->above_4g_mem_size,
0a122b
+                                    mch->pci_info.w64.begin,
0a122b
                                     &mch->pci_hole_64bit);
0a122b
     }
0a122b
     /* smram */
0a122b
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
0a122b
index 2992464..fe21bc3 100644
0a122b
--- a/include/hw/i386/pc.h
0a122b
+++ b/include/hw/i386/pc.h
0a122b
@@ -20,7 +20,6 @@ typedef struct PcPciInfo {
0a122b
 } PcPciInfo;
0a122b
 
0a122b
 struct PcGuestInfo {
0a122b
-    PcPciInfo pci_info;
0a122b
     bool has_pci_info;
0a122b
     FWCfgState *fw_cfg;
0a122b
 };
0a122b
@@ -101,6 +100,16 @@ void pc_acpi_init(const char *default_dsdt);
0a122b
 PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size,
0a122b
                                 ram_addr_t above_4g_mem_size);
0a122b
 
0a122b
+#define PCI_HOST_PROP_PCI_HOLE_START   "pci-hole-start"
0a122b
+#define PCI_HOST_PROP_PCI_HOLE_END     "pci-hole-end"
0a122b
+#define PCI_HOST_PROP_PCI_HOLE64_START "pci-hole64-start"
0a122b
+#define PCI_HOST_PROP_PCI_HOLE64_END   "pci-hole64-end"
0a122b
+#define PCI_HOST_PROP_PCI_HOLE64_SIZE  "pci-hole64-size"
0a122b
+#define DEFAULT_PCI_HOLE64_SIZE (1ULL << 31)
0a122b
+
0a122b
+void pc_init_pci64_hole(PcPciInfo *pci_info, uint64_t pci_hole64_start,
0a122b
+                        uint64_t pci_hole64_size);
0a122b
+
0a122b
 FWCfgState *pc_memory_init(MemoryRegion *system_memory,
0a122b
                            const char *kernel_filename,
0a122b
                            const char *kernel_cmdline,
0a122b
@@ -150,8 +159,7 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state, int *piix_devfn,
0a122b
                     ram_addr_t ram_size,
0a122b
                     hwaddr pci_hole_start,
0a122b
                     hwaddr pci_hole_size,
0a122b
-                    hwaddr pci_hole64_start,
0a122b
-                    hwaddr pci_hole64_size,
0a122b
+                    ram_addr_t above_4g_mem_size,
0a122b
                     MemoryRegion *pci_memory,
0a122b
                     MemoryRegion *ram_memory);
0a122b
 
0a122b
diff --git a/include/hw/pci-host/q35.h b/include/hw/pci-host/q35.h
0a122b
index b083831..e660a40 100644
0a122b
--- a/include/hw/pci-host/q35.h
0a122b
+++ b/include/hw/pci-host/q35.h
0a122b
@@ -52,9 +52,11 @@ typedef struct MCHPCIState {
0a122b
     MemoryRegion smram_region;
0a122b
     MemoryRegion pci_hole;
0a122b
     MemoryRegion pci_hole_64bit;
0a122b
+    PcPciInfo pci_info;
0a122b
     uint8_t smm_enabled;
0a122b
     ram_addr_t below_4g_mem_size;
0a122b
     ram_addr_t above_4g_mem_size;
0a122b
+    uint64_t pci_hole64_size;
0a122b
     PcGuestInfo *guest_info;
0a122b
 } MCHPCIState;
0a122b
 
0a122b
-- 
0a122b
1.7.11.7
0a122b