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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [linux-2.6.18-xen] Add "guestdev=" boot parameter.
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1231152824 0
# Node ID 2fdc121e9b5d76464b3efd47d711c58253ef6348
# Parent fad85221407bf32df2574bca54cba730748343a2
Add "guestdev=" boot parameter.
This patch adds "guestdev=" boot parameter. This boot parameter is
used to reassign page-aligned memory resource and bind PCI back driver.
Signed-off-by: Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx>
---
Documentation/kernel-parameters.txt | 10
drivers/acpi/pci_root.c | 29 +
drivers/pci/Kconfig | 7
drivers/pci/Makefile | 1
drivers/pci/guestdev.c | 668 ++++++++++++++++++++++++++++++++++++
drivers/pci/pci.h | 4
drivers/pci/reassigndev.c | 7
include/asm-x86_64/setup.h | 2
include/linux/acpi.h | 1
include/linux/pci.h | 4
10 files changed, 732 insertions(+), 1 deletion(-)
diff -r fad85221407b -r 2fdc121e9b5d Documentation/kernel-parameters.txt
--- a/Documentation/kernel-parameters.txt Mon Jan 05 10:53:06 2009 +0000
+++ b/Documentation/kernel-parameters.txt Mon Jan 05 10:53:44 2009 +0000
@@ -1240,6 +1240,16 @@ running once the system is up.
bootloader. This is currently used on
IXP2000 systems where the bus has to be
configured a certain way for adjunct CPUs.
+ reassign_resources
+ Use guestdev parameter to reassign device's
+ resources.
+ guestdev=
+ Format: <device path>[,<device path>[,...]]
+ Format of device path:
<hid>[:<uid>]-<dev>.<func>[-<dev>.<func>[...]]
+ Specifies PCI device for guest domain.
+ If PCI-PCI bridge is specified, all
+ PCI devices behind PCI-PCI bridge are
+ reserved.
pcmv= [HW,PCMCIA] BadgePAD 4
diff -r fad85221407b -r 2fdc121e9b5d drivers/acpi/pci_root.c
--- a/drivers/acpi/pci_root.c Mon Jan 05 10:53:06 2009 +0000
+++ b/drivers/acpi/pci_root.c Mon Jan 05 10:53:44 2009 +0000
@@ -392,3 +392,32 @@ static int __init acpi_pci_root_init(voi
}
subsys_initcall(acpi_pci_root_init);
+
+int acpi_pci_get_root_seg_bbn(char *hid, char *uid, int *seg, int *bbn)
+{
+ struct list_head *entry;
+
+ list_for_each(entry, &acpi_pci_roots) {
+ struct acpi_pci_root *root;
+ root = list_entry(entry, struct acpi_pci_root, node);
+ if (!root->device->flags.hardware_id)
+ continue;
+
+ if (strcmp(root->device->pnp.hardware_id, hid))
+ continue;
+
+ if (!root->device->flags.unique_id) {
+ if (strlen(uid))
+ continue;
+ } else {
+ if (strcmp(root->device->pnp.unique_id, uid))
+ continue;
+ }
+
+ *seg = (int)root->id.segment;
+ *bbn = (int)root->id.bus;
+ return TRUE;
+ }
+ return FALSE;
+}
+EXPORT_SYMBOL(acpi_pci_get_root_seg_bbn);
diff -r fad85221407b -r 2fdc121e9b5d drivers/pci/Kconfig
--- a/drivers/pci/Kconfig Mon Jan 05 10:53:06 2009 +0000
+++ b/drivers/pci/Kconfig Mon Jan 05 10:53:44 2009 +0000
@@ -30,3 +30,10 @@ config PCI_DEBUG
When in doubt, say N.
+config PCI_GUESTDEV
+ bool "PCI Device Reservation for Passthrough"
+ depends on PCI
+ default y
+ help
+ Say Y here if you want to reserve PCI device for passthrough.
+
diff -r fad85221407b -r 2fdc121e9b5d drivers/pci/Makefile
--- a/drivers/pci/Makefile Mon Jan 05 10:53:06 2009 +0000
+++ b/drivers/pci/Makefile Mon Jan 05 10:53:44 2009 +0000
@@ -6,6 +6,7 @@ obj-y += access.o bus.o probe.o remove.
pci-driver.o search.o pci-sysfs.o rom.o setup-res.o
obj-$(CONFIG_PCI_REASSIGN) += reassigndev.o
obj-$(CONFIG_PROC_FS) += proc.o
+obj-$(CONFIG_PCI_GUESTDEV) += guestdev.o
# Build PCI Express stuff if needed
obj-$(CONFIG_PCIEPORTBUS) += pcie/
diff -r fad85221407b -r 2fdc121e9b5d drivers/pci/guestdev.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/drivers/pci/guestdev.c Mon Jan 05 10:53:44 2009 +0000
@@ -0,0 +1,668 @@
+/*
+ * Copyright (c) 2008, NEC Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/acpi.h>
+#include <asm-x86_64/setup.h>
+
+#define HID_LEN 8
+#define UID_LEN 8
+#define DEV_LEN 2
+#define FUNC_LEN 1
+#define DEV_NUM_MAX 31
+#define FUNC_NUM_MAX 7
+#define INVALID_SEG (-1)
+#define INVALID_BBN (-1)
+#define PATH_STR_MAX 128
+
+struct guestdev {
+ struct list_head root_list;
+ char hid[HID_LEN + 1];
+ char uid[UID_LEN + 1];
+ int seg;
+ int bbn;
+ struct guestdev_node *child;
+};
+
+struct guestdev_node {
+ int dev;
+ int func;
+ struct guestdev_node *child;
+};
+
+struct pcidev_sbdf {
+ int seg;
+ int bus;
+ struct pcidev_sbdf_node *child;
+};
+
+struct pcidev_sbdf_node {
+ int dev;
+ int func;
+ struct pcidev_sbdf_node *child;
+};
+
+static int reassign_resources = 0;
+
+static char guestdev_param[COMMAND_LINE_SIZE];
+LIST_HEAD(guestdev_list);
+
+/* Get hid and uid */
+static int pci_get_hid_uid(char *str, char *hid, char *uid)
+{
+ char *sp, *ep;
+ int len;
+
+ sp = str;
+ ep = strchr(sp, ':');
+ if (!ep) {
+ ep = strchr(sp, '-');
+ if (!ep)
+ goto format_err_end;
+ }
+ /* hid length */
+ len = ep - sp;
+ if (len <= 0 || HID_LEN < len)
+ goto format_err_end;
+
+ strncpy(hid, sp, len);
+ hid[len] = '\0';
+
+ if (*ep == '-') { /* no uid */
+ uid[0] = '\0';
+ return TRUE;
+ }
+
+ sp = ep + 1;
+ ep = strchr(sp, '-');
+ if (!ep)
+ ep = strchr(sp, '\0');
+
+ /* uid length */
+ len = ep - sp;
+ if (len <= 0 || UID_LEN < len)
+ goto format_err_end;
+
+ strncpy(uid, sp, len);
+ uid[len] = '\0';
+ return TRUE;
+
+format_err_end:
+ return FALSE;
+}
+
+/* Get device and function */
+static int pci_get_dev_func(char *str, int *dev, int *func)
+{
+ if (sscanf(str, "%02x.%01x", dev, func) != 2)
+ goto format_err_end;
+
+ if (*dev < 0 || DEV_NUM_MAX < *dev)
+ goto format_err_end;
+
+ if (*func < 0 || FUNC_NUM_MAX < *func)
+ goto format_err_end;
+
+ return TRUE;
+
+format_err_end:
+ return FALSE;
+}
+
+/* Check extended guestdev parameter format error */
+static int pci_check_extended_guestdev_format(char *str)
+{
+ int flg;
+ char *p;
+
+ /* Check extended format */
+ if (strpbrk(str, "(|)") == NULL)
+ return TRUE;
+
+ flg = 0;
+ p = str;
+ while (*p) {
+ switch (*p) {
+ case '(':
+ /* Check nesting error */
+ if (flg != 0)
+ goto format_err_end;
+ flg = 1;
+ /* Check position of '(' is head or
+ previos charactor of '(' is not '-'. */
+ if (p == str || *(p - 1) != '-')
+ goto format_err_end;
+ break;
+ case ')':
+ /* Check nesting error */
+ if (flg != 1)
+ goto format_err_end;
+ flg = 0;
+ /* Check next charactor of ')' is not '\0' */
+ if (*(p + 1) != '\0')
+ goto format_err_end;
+ break;
+ case '|':
+ /* Check position of '|' is outside of '(' and ')' */
+ if (flg != 1)
+ goto format_err_end;
+ break;
+ default:
+ break;
+ }
+ p++;
+ }
+ /* Check number of '(' and ')' are not equal */
+ if (flg != 0)
+ goto format_err_end;
+ return TRUE;
+
+format_err_end:
+ printk(KERN_ERR
+ "PCI: The format of the guestdev parameter is illegal. [%s]\n",
+ str);
+ return FALSE;
+}
+
+/* Make guestdev strings */
+static void pci_make_guestdev_path_str(struct guestdev *gdev,
+ char *gdev_str, int buf_size)
+{
+ struct guestdev_node *node;
+ /* max length for "HID:UID" (hid+uid+':'+'\0') */
+ const int hid_uid_len = HID_LEN + UID_LEN + 2;
+ /* max length for "-DEV#.FUNC#" (dev+func+'-'+'.'+'\0') */
+ const int dev_func_len = DEV_LEN + FUNC_LEN + 3;
+
+ /* check buffer size for HID:UID */
+ if (buf_size < hid_uid_len)
+ return;
+
+ memset(gdev_str, 0, buf_size);
+
+ if (strlen(gdev->uid))
+ sprintf(gdev_str, "%s:%s", gdev->hid, gdev->uid);
+ else
+ sprintf(gdev_str, "%s", gdev->hid);
+ buf_size -= strlen(gdev_str);
+
+ node = gdev->child;
+ while (node) {
+ /* check buffer size for -DEV#.FUNC# */
+ if (buf_size < dev_func_len)
+ return;
+ sprintf(gdev_str + strlen(gdev_str), "-%02x.%01x",
+ node->dev, node->func);
+ buf_size -= dev_func_len;
+ node = node->child;
+ }
+}
+
+/* Free guestdev and nodes */
+static void pci_free_guestdev(struct guestdev *gdev)
+{
+ struct guestdev_node *node, *next;
+
+ if (!gdev)
+ return;
+
+ node = gdev->child;
+ while (node) {
+ next = node->child;
+ kfree(node);
+ node = next;
+ }
+ list_del(&gdev->root_list);
+ kfree(gdev);
+}
+
+/* Free guestdev_list */
+static void pci_free_guestdev_list(void)
+{
+ struct list_head *head, *tmp;
+ struct guestdev *gdev;
+
+ list_for_each_safe(head, tmp, &guestdev_list) {
+ gdev = list_entry(head, struct guestdev, root_list);
+ pci_free_guestdev(gdev);
+ }
+}
+
+/* Copy guestdev and nodes */
+struct guestdev *pci_copy_guestdev(struct guestdev *gdev_src)
+{
+ struct guestdev *gdev;
+ struct guestdev_node *node, *node_src, *node_upper;
+
+ gdev = kmalloc(sizeof(*gdev), GFP_KERNEL);
+ if (!gdev)
+ goto allocate_err_end;
+
+ memset(gdev, 0, sizeof(*gdev));
+ INIT_LIST_HEAD(&gdev->root_list);
+ strcpy(gdev->hid, gdev_src->hid);
+ strcpy(gdev->uid, gdev_src->uid);
+ gdev->seg = gdev_src->seg;
+ gdev->bbn = gdev_src->bbn;
+
+ node_upper = NULL;
+
+ node_src = gdev_src->child;
+ while (node_src) {
+ node = kmalloc(sizeof(*node), GFP_KERNEL);
+ if (!node)
+ goto allocate_err_end;
+ memset(node, 0, sizeof(*node));
+ node->dev = node_src->dev;
+ node->func = node_src->func;
+ if (!node_upper)
+ gdev->child = node;
+ else
+ node_upper->child = node;
+ node_upper = node;
+ node_src = node_src->child;
+ }
+
+ return gdev;
+
+allocate_err_end:
+ if (gdev)
+ pci_free_guestdev(gdev);
+ printk(KERN_ERR "PCI: Failed to allocate memory.\n");
+ return NULL;
+}
+
+/* Make guestdev from path strings */
+static int pci_make_guestdev(char *path_str)
+{
+ char hid[HID_LEN + 1], uid[UID_LEN + 1];
+ char *sp, *ep;
+ struct guestdev *gdev, *gdev_org;
+ struct guestdev_node *node, *node_tmp;
+ int dev, func, ret_val;
+
+ ret_val = 0;
+ gdev = gdev_org = NULL;
+ sp = path_str;
+ /* Look for end of hid:uid'-' */
+ ep = strchr(sp, '-');
+ /* Only hid, uid. (No dev, func) */
+ if (!ep)
+ goto format_err_end;
+
+ memset(hid, 0 ,sizeof(hid));
+ memset(uid, 0, sizeof(uid));
+ if (!pci_get_hid_uid(sp, hid, uid))
+ goto format_err_end;
+
+ gdev_org = kmalloc(sizeof(*gdev_org), GFP_KERNEL);
+ if (!gdev_org)
+ goto allocate_err_end;
+ memset(gdev_org, 0, sizeof(*gdev_org));
+ INIT_LIST_HEAD(&gdev_org->root_list);
+ strcpy(gdev_org->hid, hid);
+ strcpy(gdev_org->uid, uid);
+ gdev_org->seg = INVALID_SEG;
+ gdev_org->bbn = INVALID_BBN;
+
+ gdev = gdev_org;
+
+ sp = ep + 1;
+ ep = sp;
+ do {
+ if (*sp == '(') {
+ sp++;
+ if (strchr(sp, '|')) {
+ gdev = pci_copy_guestdev(gdev_org);
+ if (!gdev) {
+ ret_val = -ENOMEM;
+ goto err_end;
+ }
+ }
+ continue;
+ }
+ if (pci_get_dev_func(sp, &dev, &func)) {
+ node = kmalloc(sizeof(*node), GFP_KERNEL);
+ if (!node)
+ goto allocate_err_end;
+ memset(node, 0, sizeof(*node));
+ node->dev = dev;
+ node->func = func;
+ /* add node to end of guestdev */
+ if (gdev->child) {
+ node_tmp = gdev->child;
+ while (node_tmp->child) {
+ node_tmp = node_tmp->child;
+ }
+ node_tmp->child = node;
+ } else
+ gdev->child = node;
+ } else
+ goto format_err_end;
+
+ ep = strpbrk(sp, "-|)");
+ if (!ep)
+ ep = strchr(sp, '\0');
+ /* *ep is '|' OR ')' OR '\0' ? */
+ if (*ep != '-') {
+ list_add_tail(&gdev->root_list, &guestdev_list);
+ if (*ep == '|') {
+ /* Between '|' and '|' ? */
+ if (strchr(ep + 1, '|')) {
+ gdev = pci_copy_guestdev(gdev_org);
+ if (!gdev) {
+ ret_val = -ENOMEM;
+ goto err_end;
+ }
+ } else
+ gdev = gdev_org;
+ }
+ }
+ if (*ep == ')')
+ ep++;
+ sp = ep + 1;
+ } while (*ep != '\0');
+
+ return ret_val;
+
+format_err_end:
+ printk(KERN_ERR
+ "PCI: The format of the guestdev parameter is illegal. [%s]\n",
+ path_str);
+ ret_val = -EINVAL;
+ goto err_end;
+
+allocate_err_end:
+ printk(KERN_ERR "PCI: Failed to allocate memory.\n");
+ ret_val = -ENOMEM;
+ goto err_end;
+
+err_end:
+ if (gdev_org && (gdev_org != gdev))
+ pci_free_guestdev(gdev_org);
+ if (gdev)
+ pci_free_guestdev(gdev);
+ return ret_val;
+}
+
+/* Parse guestdev parameter */
+static int __init pci_parse_guestdev(void)
+{
+ int len, ret_val;
+ char *sp, *ep;
+ struct list_head *head;
+ struct guestdev *gdev;
+ char path_str[PATH_STR_MAX];
+
+ ret_val = 0;
+
+ len = strlen(guestdev_param);
+ if (len == 0)
+ goto end;
+
+ sp = guestdev_param;
+
+ do {
+ ep = strchr(sp, ',');
+ /* Chop */
+ if (ep)
+ *ep = '\0';
+ if (!pci_check_extended_guestdev_format(sp)) {
+ pci_free_guestdev_list();
+ return -EINVAL;
+ }
+
+ ret_val = pci_make_guestdev(sp);
+ if (ret_val) {
+ pci_free_guestdev_list();
+ return ret_val;
+ }
+ sp = ep + 1;
+ } while (ep);
+
+ list_for_each(head, &guestdev_list) {
+ gdev = list_entry(head, struct guestdev, root_list);
+ pci_make_guestdev_path_str(gdev, path_str, PATH_STR_MAX);
+ printk(KERN_DEBUG
+ "PCI: %s has been reserved for guest domain.\n",
+ path_str);
+ }
+
+end:
+ return ret_val;
+}
+
+arch_initcall(pci_parse_guestdev);
+
+/* Get command line */
+static int __init pci_guestdev_setup(char *str)
+{
+ if (strlen(str) >= COMMAND_LINE_SIZE)
+ return 0;
+ strcpy(guestdev_param, str);
+ return 1;
+}
+
+__setup("guestdev=", pci_guestdev_setup);
+
+/* Free sbdf and nodes */
+static void pci_free_sbdf(struct pcidev_sbdf *sbdf)
+{
+ struct pcidev_sbdf_node *node, *next;
+
+ node = sbdf->child;
+ while (node) {
+ next = node->child;
+ kfree(node);
+ node = next;
+ }
+ /* Skip kfree(sbdf) */
+}
+
+/* Is sbdf within guestdev */
+static int pci_sbdf_in_guestdev_sub_tree(struct guestdev *gdev,
+ struct pcidev_sbdf *sbdf)
+{
+ int seg, bbn;
+ struct guestdev_node *gdev_node;
+ struct pcidev_sbdf_node *sbdf_node;
+
+ if (!gdev || !sbdf)
+ return FALSE;
+
+ /* Compare seg and bbn */
+ if (gdev->seg == INVALID_SEG ||
+ gdev->bbn == INVALID_BBN) {
+ if (acpi_pci_get_root_seg_bbn(gdev->hid,
+ gdev->uid, &seg, &bbn)) {
+ gdev->seg = seg;
+ gdev->bbn = bbn;
+ } else
+ return FALSE;
+ }
+
+ if (gdev->seg != sbdf->seg || gdev->bbn != sbdf->bus)
+ return FALSE;
+
+ gdev_node = gdev->child;
+ sbdf_node = sbdf->child;
+
+ /* Compare dev and func */
+ while (gdev_node) {
+ if (!sbdf_node)
+ return FALSE;
+ if (gdev_node->dev != sbdf_node->dev ||
+ gdev_node->func != sbdf_node->func)
+ return FALSE;
+ gdev_node = gdev_node->child;
+ sbdf_node = sbdf_node->child;
+ }
+ return TRUE;
+}
+
+/* Get sbdf from device */
+static int pci_get_sbdf_from_pcidev(
+ struct pci_dev *dev, struct pcidev_sbdf *sbdf)
+{
+ struct pcidev_sbdf_node *node;
+
+ if (!dev)
+ return FALSE;
+
+ for(;;) {
+ node = kmalloc(sizeof(*node), GFP_KERNEL);
+ if (!node) {
+ printk(KERN_ERR "PCI: Failed to allocate memory.\n");
+ goto err_end;
+ }
+ memset(node, 0, sizeof(*node));
+ node->dev = PCI_SLOT(dev->devfn);
+ node->func = PCI_FUNC(dev->devfn);
+
+ if (!sbdf->child)
+ sbdf->child = node;
+ else {
+ node->child = sbdf->child;
+ sbdf->child = node;
+ }
+ if (!dev->bus)
+ goto err_end;
+ if (!dev->bus->self)
+ break;
+ dev = dev->bus->self;
+ }
+ if (sscanf(dev->dev.bus_id, "%04x:%02x", &sbdf->seg, &sbdf->bus) != 2)
+ goto err_end;
+ return TRUE;
+
+err_end:
+ pci_free_sbdf(sbdf);
+ return FALSE;
+}
+
+/* Is PCI device belongs to the subtree of the guestdev parameter */
+int pci_is_guestdev(struct pci_dev *dev)
+{
+ struct guestdev *gdev;
+ struct pcidev_sbdf sbdf;
+ struct list_head *head;
+ int result;
+
+ if (!dev)
+ return FALSE;
+ memset(&sbdf, 0 ,sizeof(sbdf));
+ if (!pci_get_sbdf_from_pcidev(dev, &sbdf))
+ return FALSE;
+
+ result = FALSE;
+ list_for_each(head, &guestdev_list) {
+ gdev = list_entry(head, struct guestdev, root_list);
+ if (pci_sbdf_in_guestdev_sub_tree(gdev, &sbdf)) {
+ result = TRUE;
+ break;
+ }
+ }
+ pci_free_sbdf(&sbdf);
+ return result;
+}
+EXPORT_SYMBOL(pci_is_guestdev);
+
+static int __init pci_set_reassign_resources(char *str)
+{
+ reassign_resources = 1;
+
+ return 1;
+}
+
+__setup("reassign_resources", pci_set_reassign_resources);
+
+int pci_is_guestdev_to_reassign(struct pci_dev *dev)
+{
+ if (reassign_resources)
+ return pci_is_guestdev(dev);
+ return FALSE;
+}
+EXPORT_SYMBOL(pci_is_guestdev_to_reassign);
+
+/* Check whether the guestdev exists under the pci root bus */
+static int __init pci_check_guestdev_path_exists(
+ struct guestdev *gdev, struct pci_bus *bus)
+{
+ struct guestdev_node *node;
+ struct pci_dev *dev;
+
+ node = gdev->child;
+ while (node) {
+ if (!bus)
+ return FALSE;
+ dev = pci_get_slot(bus, PCI_DEVFN(node->dev, node->func));
+ if (!dev) {
+ pci_dev_put(dev);
+ return FALSE;
+ }
+ bus = dev->subordinate;
+ node = node->child;
+ pci_dev_put(dev);
+ }
+ return TRUE;
+}
+
+/* Check whether the guestdev exists in the PCI device tree */
+static int __init pci_check_guestdev_exists(void)
+{
+ struct list_head *head;
+ struct guestdev *gdev;
+ int seg, bbn;
+ struct pci_bus *bus;
+ char path_str[PATH_STR_MAX];
+
+ list_for_each(head, &guestdev_list) {
+ gdev = list_entry(head, struct guestdev, root_list);
+ if (gdev->seg == INVALID_SEG ||
+ gdev->bbn == INVALID_BBN) {
+ if (acpi_pci_get_root_seg_bbn(gdev->hid,
+ gdev->uid, &seg, &bbn)) {
+ gdev->seg = seg;
+ gdev->bbn = bbn;
+ } else {
+ pci_make_guestdev_path_str(gdev, path_str,
+ PATH_STR_MAX);
+ printk(KERN_INFO
+ "PCI: Device does not exist. %s\n",
+ path_str);
+ continue;
+ }
+ }
+
+ bus = pci_find_bus(gdev->seg, gdev->bbn);
+ if (!bus || !pci_check_guestdev_path_exists(gdev, bus)) {
+ pci_make_guestdev_path_str(gdev, path_str,
+ PATH_STR_MAX);
+ printk(KERN_INFO
+ "PCI: Device does not exist. %s\n", path_str);
+ }
+ }
+ return 0;
+}
+
+fs_initcall(pci_check_guestdev_exists);
+
diff -r fad85221407b -r 2fdc121e9b5d drivers/pci/pci.h
--- a/drivers/pci/pci.h Mon Jan 05 10:53:06 2009 +0000
+++ b/drivers/pci/pci.h Mon Jan 05 10:53:44 2009 +0000
@@ -105,3 +105,7 @@ extern void pci_disable_bridge_window(st
#else
#define is_reassigndev(dev) 0
#endif
+
+#ifdef CONFIG_PCI_GUESTDEV
+int pci_is_guestdev_to_reassign(struct pci_dev *dev);
+#endif /* CONFIG_PCI_GUESTDEV */
diff -r fad85221407b -r 2fdc121e9b5d drivers/pci/reassigndev.c
--- a/drivers/pci/reassigndev.c Mon Jan 05 10:53:06 2009 +0000
+++ b/drivers/pci/reassigndev.c Mon Jan 05 10:53:44 2009 +0000
@@ -40,6 +40,13 @@ int is_reassigndev(struct pci_dev *dev)
int seg, bus, slot, func;
int len;
char *p, *next_str;
+ int result;
+
+#ifdef CONFIG_PCI_GUESTDEV
+ result = pci_is_guestdev_to_reassign(dev);
+ if (result)
+ return result;
+#endif /* CONFIG_PCI_GUESTDEV */
p = param_reassigndev;
for (; p; p = next_str + 1) {
diff -r fad85221407b -r 2fdc121e9b5d include/asm-x86_64/setup.h
--- a/include/asm-x86_64/setup.h Mon Jan 05 10:53:06 2009 +0000
+++ b/include/asm-x86_64/setup.h Mon Jan 05 10:53:44 2009 +0000
@@ -1,6 +1,6 @@
#ifndef _x8664_SETUP_H
#define _x8664_SETUP_H
-#define COMMAND_LINE_SIZE 256
+#define COMMAND_LINE_SIZE 1024
#endif
diff -r fad85221407b -r 2fdc121e9b5d include/linux/acpi.h
--- a/include/linux/acpi.h Mon Jan 05 10:53:06 2009 +0000
+++ b/include/linux/acpi.h Mon Jan 05 10:53:44 2009 +0000
@@ -406,6 +406,7 @@ void acpi_table_print (struct acpi_table
void acpi_table_print (struct acpi_table_header *header, unsigned long
phys_addr);
void acpi_table_print_madt_entry (acpi_table_entry_header *madt);
void acpi_table_print_srat_entry (acpi_table_entry_header *srat);
+int acpi_pci_get_root_seg_bbn(char *hid, char *uid, int *seg, int *bbn);
/* the following four functions are architecture-dependent */
#ifdef CONFIG_HAVE_ARCH_PARSE_SRAT
diff -r fad85221407b -r 2fdc121e9b5d include/linux/pci.h
--- a/include/linux/pci.h Mon Jan 05 10:53:06 2009 +0000
+++ b/include/linux/pci.h Mon Jan 05 10:53:44 2009 +0000
@@ -804,5 +804,9 @@ extern int pci_pci_problems;
#define PCIPCI_VSFX 16
#define PCIPCI_ALIMAGIK 32
+#ifdef CONFIG_PCI_GUESTDEV
+int pci_is_guestdev(struct pci_dev *dev);
+#endif /* CONFIG_PCI_GUESTDEV */
+
#endif /* __KERNEL__ */
#endif /* LINUX_PCI_H */
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