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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] arch/xen/kernel/fixup.c -> arch/xen/i386/kernel/fixup.c
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 367b9ca30e8864f0402b83002d9d50ad8e1da650
# Parent 2eb868d02f0f8ee0964d6322c6585be6ce0de123
arch/xen/kernel/fixup.c -> arch/xen/i386/kernel/fixup.c
arch/xen/kernel/devmem.c -> drivers/xen/char/mem.c
arch/xen/kernel/smp.c deleted
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
diff -r 2eb868d02f0f -r 367b9ca30e88
linux-2.6-xen-sparse/arch/xen/i386/kernel/Makefile
--- a/linux-2.6-xen-sparse/arch/xen/i386/kernel/Makefile Mon Nov 28
12:39:22 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/kernel/Makefile Mon Nov 28
13:08:53 2005
@@ -11,7 +11,7 @@
obj-y := process.o signal.o entry.o traps.o \
time.o ioport.o ldt.o setup.o \
- pci-dma.o i386_ksyms.o irq.o quirks.o
+ pci-dma.o i386_ksyms.o irq.o quirks.o fixup.o
c-obj-y := semaphore.o vm86.o \
ptrace.o sys_i386.o \
diff -r 2eb868d02f0f -r 367b9ca30e88
linux-2.6-xen-sparse/arch/xen/kernel/Makefile
--- a/linux-2.6-xen-sparse/arch/xen/kernel/Makefile Mon Nov 28 12:39:22 2005
+++ b/linux-2.6-xen-sparse/arch/xen/kernel/Makefile Mon Nov 28 13:08:53 2005
@@ -11,8 +11,8 @@
extra-y += vmlinux.lds
-obj-y := evtchn.o fixup.o reboot.o gnttab.o devmem.o
+obj-y := evtchn.o reboot.o gnttab.o
obj-$(CONFIG_PROC_FS) += xen_proc.o
obj-$(CONFIG_NET) += skbuff.o
-obj-$(CONFIG_SMP) += smp.o smpboot.o
+obj-$(CONFIG_SMP) += smpboot.o
diff -r 2eb868d02f0f -r 367b9ca30e88
linux-2.6-xen-sparse/arch/xen/kernel/smpboot.c
--- a/linux-2.6-xen-sparse/arch/xen/kernel/smpboot.c Mon Nov 28 12:39:22 2005
+++ b/linux-2.6-xen-sparse/arch/xen/kernel/smpboot.c Mon Nov 28 13:08:53 2005
@@ -420,6 +420,12 @@
{
}
+int setup_profiling_timer(unsigned int multiplier)
+{
+ /* Dummy function. */
+ return 0;
+}
+
/*
* Local variables:
* c-file-style: "linux"
diff -r 2eb868d02f0f -r 367b9ca30e88 linux-2.6-xen-sparse/drivers/xen/Makefile
--- a/linux-2.6-xen-sparse/drivers/xen/Makefile Mon Nov 28 12:39:22 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/Makefile Mon Nov 28 13:08:53 2005
@@ -2,6 +2,7 @@
obj-y += net_driver_util.o
obj-y += util.o
+obj-y += char/
obj-y += console/
obj-y += evtchn/
obj-y += balloon/
diff -r 2eb868d02f0f -r 367b9ca30e88
linux-2.6-xen-sparse/arch/xen/i386/kernel/fixup.c
--- /dev/null Mon Nov 28 12:39:22 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/kernel/fixup.c Mon Nov 28 13:08:53 2005
@@ -0,0 +1,93 @@
+/******************************************************************************
+ * fixup.c
+ *
+ * Binary-rewriting of certain IA32 instructions, on notification by Xen.
+ * Used to avoid repeated slow emulation of common instructions used by the
+ * user-space TLS (Thread-Local Storage) libraries.
+ *
+ * **** NOTE ****
+ * Issues with the binary rewriting have caused it to be removed. Instead
+ * we rely on Xen's emulator to boot the kernel, and then print a banner
+ * message recommending that the user disables /lib/tls.
+ *
+ * Copyright (c) 2004, K A Fraser
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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/config.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/version.h>
+
+#define DP(_f, _args...) printk(KERN_ALERT " " _f "\n" , ## _args )
+
+fastcall void do_fixup_4gb_segment(struct pt_regs *regs, long error_code)
+{
+ static unsigned long printed = 0;
+ char info[100];
+ int i;
+
+ if (test_and_set_bit(0, &printed))
+ return;
+
+ HYPERVISOR_vm_assist(
+ VMASST_CMD_disable, VMASST_TYPE_4gb_segments_notify);
+
+ sprintf(info, "%s (pid=%d)", current->comm, current->tgid);
+
+
+ DP("");
+ DP("***************************************************************");
+ DP("***************************************************************");
+ DP("** WARNING: Currently emulating unsupported memory accesses **");
+ DP("** in /lib/tls libraries. The emulation is very **");
+ DP("** slow. To ensure full performance you should **");
+ DP("** execute the following as root: **");
+ DP("** mv /lib/tls /lib/tls.disabled **");
+ DP("** Offending process: %-38.38s **", info);
+ DP("***************************************************************");
+ DP("***************************************************************");
+ DP("");
+
+ for (i = 5; i > 0; i--) {
+ printk("Pausing... %d", i);
+ mdelay(1000);
+ printk("\b\b\b\b\b\b\b\b\b\b\b\b");
+ }
+
+ printk("Continuing...\n\n");
+}
+
+static int __init fixup_init(void)
+{
+ HYPERVISOR_vm_assist(
+ VMASST_CMD_enable, VMASST_TYPE_4gb_segments_notify);
+ return 0;
+}
+__initcall(fixup_init);
+
+/*
+ * Local variables:
+ * c-file-style: "linux"
+ * indent-tabs-mode: t
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
diff -r 2eb868d02f0f -r 367b9ca30e88
linux-2.6-xen-sparse/drivers/xen/char/Makefile
--- /dev/null Mon Nov 28 12:39:22 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/char/Makefile Mon Nov 28 13:08:53 2005
@@ -0,0 +1,2 @@
+
+obj-y := mem.o
diff -r 2eb868d02f0f -r 367b9ca30e88 linux-2.6-xen-sparse/drivers/xen/char/mem.c
--- /dev/null Mon Nov 28 12:39:22 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/char/mem.c Mon Nov 28 13:08:53 2005
@@ -0,0 +1,157 @@
+/*
+ * Originally from linux/drivers/char/mem.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * Added devfs support.
+ * Jan-11-1998, C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>
+ * Shared /dev/zero mmaping support, Feb 2000, Kanoj Sarcar <kanoj@xxxxxxx>
+ */
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/miscdevice.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/mman.h>
+#include <linux/random.h>
+#include <linux/init.h>
+#include <linux/raw.h>
+#include <linux/tty.h>
+#include <linux/capability.h>
+#include <linux/smp_lock.h>
+#include <linux/devfs_fs_kernel.h>
+#include <linux/ptrace.h>
+#include <linux/device.h>
+#include <asm/pgalloc.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/hypervisor.h>
+
+static inline int uncached_access(struct file *file)
+{
+ if (file->f_flags & O_SYNC)
+ return 1;
+ /* Xen sets correct MTRR type on non-RAM for us. */
+ return 0;
+}
+
+/*
+ * This funcion reads the *physical* memory. The f_pos points directly to the
+ * memory location.
+ */
+static ssize_t read_mem(struct file * file, char __user * buf,
+ size_t count, loff_t *ppos)
+{
+ unsigned long i, p = *ppos;
+ ssize_t read = -EFAULT;
+ void __iomem *v;
+
+ if ((v = ioremap(p, count)) == NULL) {
+ /*
+ * Some programs (e.g., dmidecode) groove off into weird RAM
+ * areas where no table scan possibly exist (because Xen will
+ * have stomped on them!). These programs get rather upset if
+ * we let them know that Xen failed their access, so we fake
+ * out a read of all zeroes. :-)
+ */
+ for (i = 0; i < count; i++)
+ if (put_user(0, buf+i))
+ return -EFAULT;
+ return count;
+ }
+ if (copy_to_user(buf, v, count))
+ goto out;
+
+ read = count;
+ *ppos += read;
+out:
+ iounmap(v);
+ return read;
+}
+
+static ssize_t write_mem(struct file * file, const char __user * buf,
+ size_t count, loff_t *ppos)
+{
+ unsigned long p = *ppos;
+ ssize_t written = -EFAULT;
+ void __iomem *v;
+
+ if ((v = ioremap(p, count)) == NULL)
+ return -EFAULT;
+ if (copy_from_user(v, buf, count))
+ goto out;
+
+ written = count;
+ *ppos += written;
+out:
+ iounmap(v);
+ return written;
+}
+
+static int mmap_mem(struct file * file, struct vm_area_struct * vma)
+{
+ if (uncached_access(file))
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+ if (direct_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+ vma->vm_end - vma->vm_start,
+ vma->vm_page_prot, DOMID_IO))
+ return -EAGAIN;
+
+ return 0;
+}
+
+/*
+ * The memory devices use the full 32/64 bits of the offset, and so we cannot
+ * check against negative addresses: they are ok. The return value is weird,
+ * though, in that case (0).
+ *
+ * also note that seeking relative to the "end of file" isn't supported:
+ * it has no meaning, so it returns -EINVAL.
+ */
+static loff_t memory_lseek(struct file * file, loff_t offset, int orig)
+{
+ loff_t ret;
+
+ down(&file->f_dentry->d_inode->i_sem);
+ switch (orig) {
+ case 0:
+ file->f_pos = offset;
+ ret = file->f_pos;
+ force_successful_syscall_return();
+ break;
+ case 1:
+ file->f_pos += offset;
+ ret = file->f_pos;
+ force_successful_syscall_return();
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ up(&file->f_dentry->d_inode->i_sem);
+ return ret;
+}
+
+static int open_mem(struct inode * inode, struct file * filp)
+{
+ return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
+}
+
+struct file_operations mem_fops = {
+ .llseek = memory_lseek,
+ .read = read_mem,
+ .write = write_mem,
+ .mmap = mmap_mem,
+ .open = open_mem,
+};
+
+/*
+ * Local variables:
+ * c-file-style: "linux"
+ * indent-tabs-mode: t
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
diff -r 2eb868d02f0f -r 367b9ca30e88
linux-2.6-xen-sparse/arch/xen/kernel/devmem.c
--- a/linux-2.6-xen-sparse/arch/xen/kernel/devmem.c Mon Nov 28 12:39:22 2005
+++ /dev/null Mon Nov 28 13:08:53 2005
@@ -1,157 +0,0 @@
-/*
- * Originally from linux/drivers/char/mem.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * Added devfs support.
- * Jan-11-1998, C. Scott Ananian <cananian@xxxxxxxxxxxxxxxxxxxx>
- * Shared /dev/zero mmaping support, Feb 2000, Kanoj Sarcar <kanoj@xxxxxxx>
- */
-
-#include <linux/config.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/mman.h>
-#include <linux/random.h>
-#include <linux/init.h>
-#include <linux/raw.h>
-#include <linux/tty.h>
-#include <linux/capability.h>
-#include <linux/smp_lock.h>
-#include <linux/devfs_fs_kernel.h>
-#include <linux/ptrace.h>
-#include <linux/device.h>
-#include <asm/pgalloc.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/hypervisor.h>
-
-static inline int uncached_access(struct file *file)
-{
- if (file->f_flags & O_SYNC)
- return 1;
- /* Xen sets correct MTRR type on non-RAM for us. */
- return 0;
-}
-
-/*
- * This funcion reads the *physical* memory. The f_pos points directly to the
- * memory location.
- */
-static ssize_t read_mem(struct file * file, char __user * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long i, p = *ppos;
- ssize_t read = -EFAULT;
- void __iomem *v;
-
- if ((v = ioremap(p, count)) == NULL) {
- /*
- * Some programs (e.g., dmidecode) groove off into weird RAM
- * areas where no table scan possibly exist (because Xen will
- * have stomped on them!). These programs get rather upset if
- * we let them know that Xen failed their access, so we fake
- * out a read of all zeroes. :-)
- */
- for (i = 0; i < count; i++)
- if (put_user(0, buf+i))
- return -EFAULT;
- return count;
- }
- if (copy_to_user(buf, v, count))
- goto out;
-
- read = count;
- *ppos += read;
-out:
- iounmap(v);
- return read;
-}
-
-static ssize_t write_mem(struct file * file, const char __user * buf,
- size_t count, loff_t *ppos)
-{
- unsigned long p = *ppos;
- ssize_t written = -EFAULT;
- void __iomem *v;
-
- if ((v = ioremap(p, count)) == NULL)
- return -EFAULT;
- if (copy_from_user(v, buf, count))
- goto out;
-
- written = count;
- *ppos += written;
-out:
- iounmap(v);
- return written;
-}
-
-static int mmap_mem(struct file * file, struct vm_area_struct * vma)
-{
- if (uncached_access(file))
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- if (direct_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot, DOMID_IO))
- return -EAGAIN;
-
- return 0;
-}
-
-/*
- * The memory devices use the full 32/64 bits of the offset, and so we cannot
- * check against negative addresses: they are ok. The return value is weird,
- * though, in that case (0).
- *
- * also note that seeking relative to the "end of file" isn't supported:
- * it has no meaning, so it returns -EINVAL.
- */
-static loff_t memory_lseek(struct file * file, loff_t offset, int orig)
-{
- loff_t ret;
-
- down(&file->f_dentry->d_inode->i_sem);
- switch (orig) {
- case 0:
- file->f_pos = offset;
- ret = file->f_pos;
- force_successful_syscall_return();
- break;
- case 1:
- file->f_pos += offset;
- ret = file->f_pos;
- force_successful_syscall_return();
- break;
- default:
- ret = -EINVAL;
- }
- up(&file->f_dentry->d_inode->i_sem);
- return ret;
-}
-
-static int open_mem(struct inode * inode, struct file * filp)
-{
- return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
-}
-
-struct file_operations mem_fops = {
- .llseek = memory_lseek,
- .read = read_mem,
- .write = write_mem,
- .mmap = mmap_mem,
- .open = open_mem,
-};
-
-/*
- * Local variables:
- * c-file-style: "linux"
- * indent-tabs-mode: t
- * c-indent-level: 8
- * c-basic-offset: 8
- * tab-width: 8
- * End:
- */
diff -r 2eb868d02f0f -r 367b9ca30e88
linux-2.6-xen-sparse/arch/xen/kernel/fixup.c
--- a/linux-2.6-xen-sparse/arch/xen/kernel/fixup.c Mon Nov 28 12:39:22 2005
+++ /dev/null Mon Nov 28 13:08:53 2005
@@ -1,93 +0,0 @@
-/******************************************************************************
- * fixup.c
- *
- * Binary-rewriting of certain IA32 instructions, on notification by Xen.
- * Used to avoid repeated slow emulation of common instructions used by the
- * user-space TLS (Thread-Local Storage) libraries.
- *
- * **** NOTE ****
- * Issues with the binary rewriting have caused it to be removed. Instead
- * we rely on Xen's emulator to boot the kernel, and then print a banner
- * message recommending that the user disables /lib/tls.
- *
- * Copyright (c) 2004, K A Fraser
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that 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/config.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/version.h>
-
-#define DP(_f, _args...) printk(KERN_ALERT " " _f "\n" , ## _args )
-
-fastcall void do_fixup_4gb_segment(struct pt_regs *regs, long error_code)
-{
- static unsigned long printed = 0;
- char info[100];
- int i;
-
- if (test_and_set_bit(0, &printed))
- return;
-
- HYPERVISOR_vm_assist(
- VMASST_CMD_disable, VMASST_TYPE_4gb_segments_notify);
-
- sprintf(info, "%s (pid=%d)", current->comm, current->tgid);
-
-
- DP("");
- DP("***************************************************************");
- DP("***************************************************************");
- DP("** WARNING: Currently emulating unsupported memory accesses **");
- DP("** in /lib/tls libraries. The emulation is very **");
- DP("** slow. To ensure full performance you should **");
- DP("** execute the following as root: **");
- DP("** mv /lib/tls /lib/tls.disabled **");
- DP("** Offending process: %-38.38s **", info);
- DP("***************************************************************");
- DP("***************************************************************");
- DP("");
-
- for (i = 5; i > 0; i--) {
- printk("Pausing... %d", i);
- mdelay(1000);
- printk("\b\b\b\b\b\b\b\b\b\b\b\b");
- }
-
- printk("Continuing...\n\n");
-}
-
-static int __init fixup_init(void)
-{
- HYPERVISOR_vm_assist(
- VMASST_CMD_enable, VMASST_TYPE_4gb_segments_notify);
- return 0;
-}
-__initcall(fixup_init);
-
-/*
- * Local variables:
- * c-file-style: "linux"
- * indent-tabs-mode: t
- * c-indent-level: 8
- * c-basic-offset: 8
- * tab-width: 8
- * End:
- */
diff -r 2eb868d02f0f -r 367b9ca30e88 linux-2.6-xen-sparse/arch/xen/kernel/smp.c
--- a/linux-2.6-xen-sparse/arch/xen/kernel/smp.c Mon Nov 28 12:39:22 2005
+++ /dev/null Mon Nov 28 13:08:53 2005
@@ -1,25 +0,0 @@
-/* Copyright (C) 2004, Christian Limpach */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/threads.h>
-
-/*
- * the frequency of the profiling timer can be changed
- * by writing a multiplier value into /proc/profile.
- */
-int setup_profiling_timer(unsigned int multiplier)
-{
- printk("setup_profiling_timer\n");
- return 0;
-}
-
-/*
- * Local variables:
- * c-file-style: "linux"
- * indent-tabs-mode: t
- * c-indent-level: 8
- * c-basic-offset: 8
- * tab-width: 8
- * End:
- */
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