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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] merge?
# HG changeset patch
# User cl349@xxxxxxxxxxxxxxxxxxxx
# Node ID 11f556cac45bf9ede12037e1962bed19f88b0dae
# Parent 9471090bb8ec4c01be2531c84510879e235bd4dc
# Parent 978ce7f6a3eb82c126b83a1b8e8665f16ea90de4
merge?
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/configs/xen0_defconfig_x86_32
--- a/linux-2.6-xen-sparse/arch/xen/configs/xen0_defconfig_x86_32 Thu Aug
18 18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/configs/xen0_defconfig_x86_32 Thu Aug
18 18:55:13 2005
@@ -541,7 +541,7 @@
# CONFIG_IP_NF_MATCH_STATE is not set
# CONFIG_IP_NF_MATCH_CONNTRACK is not set
# CONFIG_IP_NF_MATCH_OWNER is not set
-# CONFIG_IP_NF_MATCH_PHYSDEV is not set
+CONFIG_IP_NF_MATCH_PHYSDEV=y
# CONFIG_IP_NF_MATCH_ADDRTYPE is not set
# CONFIG_IP_NF_MATCH_REALM is not set
# CONFIG_IP_NF_MATCH_SCTP is not set
@@ -689,7 +689,7 @@
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
# CONFIG_R8169 is not set
-# CONFIG_SK98LIN is not set
+CONFIG_SK98LIN=y
# CONFIG_VIA_VELOCITY is not set
CONFIG_TIGON3=y
# CONFIG_BNX2 is not set
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/configs/xen0_defconfig_x86_64
--- a/linux-2.6-xen-sparse/arch/xen/configs/xen0_defconfig_x86_64 Thu Aug
18 18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/configs/xen0_defconfig_x86_64 Thu Aug
18 18:55:13 2005
@@ -480,7 +480,7 @@
# CONFIG_IP_NF_MATCH_STATE is not set
# CONFIG_IP_NF_MATCH_CONNTRACK is not set
# CONFIG_IP_NF_MATCH_OWNER is not set
-# CONFIG_IP_NF_MATCH_PHYSDEV is not set
+CONFIG_IP_NF_MATCH_PHYSDEV=y
# CONFIG_IP_NF_MATCH_ADDRTYPE is not set
# CONFIG_IP_NF_MATCH_REALM is not set
# CONFIG_IP_NF_MATCH_SCTP is not set
@@ -611,7 +611,7 @@
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
# CONFIG_R8169 is not set
-# CONFIG_SK98LIN is not set
+CONFIG_SK98LIN=y
# CONFIG_VIA_VELOCITY is not set
CONFIG_TIGON3=y
# CONFIG_BNX2 is not set
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/configs/xenU_defconfig_x86_64
--- a/linux-2.6-xen-sparse/arch/xen/configs/xenU_defconfig_x86_64 Thu Aug
18 18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/configs/xenU_defconfig_x86_64 Thu Aug
18 18:55:13 2005
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.12.4-xenU
-# Mon Aug 15 19:25:22 2005
+# Linux kernel version: 2.6.12-xenU
+# Thu Aug 18 11:15:14 2005
#
CONFIG_XEN=y
CONFIG_ARCH_XEN=y
@@ -270,7 +270,10 @@
CONFIG_IP_ROUTE_MULTIPATH=y
# CONFIG_IP_ROUTE_MULTIPATH_CACHED is not set
CONFIG_IP_ROUTE_VERBOSE=y
-# CONFIG_IP_PNP is not set
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+CONFIG_IP_PNP_RARP=y
CONFIG_NET_IPIP=m
CONFIG_NET_IPGRE=m
CONFIG_NET_IPGRE_BROADCAST=y
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/i386/kernel/Makefile
--- a/linux-2.6-xen-sparse/arch/xen/i386/kernel/Makefile Thu Aug 18
18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/kernel/Makefile Thu Aug 18
18:55:13 2005
@@ -44,7 +44,7 @@
c-obj-$(CONFIG_EFI) += efi.o efi_stub.o
c-obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
c-obj-$(CONFIG_SMP_ALTERNATIVES)+= smpalts.o
-c-obj-$(CONFIG_SWIOTLB) += swiotlb.o
+obj-$(CONFIG_SWIOTLB) += swiotlb.o
EXTRA_AFLAGS := -traditional
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/i386/kernel/i386_ksyms.c
--- a/linux-2.6-xen-sparse/arch/xen/i386/kernel/i386_ksyms.c Thu Aug 18
18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/kernel/i386_ksyms.c Thu Aug 18
18:55:13 2005
@@ -115,9 +115,6 @@
EXPORT_SYMBOL(__copy_to_user_ll);
EXPORT_SYMBOL(strnlen_user);
-EXPORT_SYMBOL(dma_alloc_coherent);
-EXPORT_SYMBOL(dma_free_coherent);
-
#ifdef CONFIG_PCI
EXPORT_SYMBOL(pci_mem_start);
#endif
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/i386/kernel/pci-dma.c
--- a/linux-2.6-xen-sparse/arch/xen/i386/kernel/pci-dma.c Thu Aug 18
18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/kernel/pci-dma.c Thu Aug 18
18:55:13 2005
@@ -24,13 +24,14 @@
unsigned long *bitmap;
};
-static void iommu_bug(void)
-{
- printk(KERN_ALERT "Fatal DMA error! Please use 'swiotlb=force'\n");
- BUG();
-}
-
-#define IOMMU_BUG_ON(test) do { if (unlikely(test)) iommu_bug(); } while(0)
+#define IOMMU_BUG_ON(test) \
+do { \
+ if (unlikely(test)) { \
+ printk(KERN_ALERT "Fatal DMA error! " \
+ "Please use 'swiotlb=force'\n"); \
+ BUG(); \
+ } \
+} while (0)
int
dma_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/i386/kernel/swiotlb.c
--- a/linux-2.6-xen-sparse/arch/xen/i386/kernel/swiotlb.c Thu Aug 18
18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/kernel/swiotlb.c Thu Aug 18
18:55:13 2005
@@ -49,13 +49,14 @@
* swiotlb_sync_single_*, to see if the memory was in fact allocated by this
* API.
*/
-static char *io_tlb_start, *io_tlb_end;
-
-/*
- * The number of IO TLB blocks (in groups of 64) betweeen io_tlb_start and
- * io_tlb_end. This is command line adjustable via setup_io_tlb_npages.
- */
-static unsigned long io_tlb_nslabs;
+static char *iotlb_virt_start, *iotlb_virt_end;
+static dma_addr_t iotlb_bus_start, iotlb_bus_end;
+
+/*
+ * The number of IO TLB blocks (in groups of 64) betweeen iotlb_virt_start and
+ * iotlb_virt_end. This is command line adjustable via setup_io_tlb_npages.
+ */
+static unsigned long iotlb_nslabs;
/*
* When the IOMMU overflows we return a fallback buffer. This sets the size.
@@ -88,11 +89,14 @@
static int __init
setup_io_tlb_npages(char *str)
{
+ /* Unlike ia64, the size is aperture in megabytes, not 'slabs'! */
if (isdigit(*str)) {
- io_tlb_nslabs = simple_strtoul(str, &str, 0) <<
- (PAGE_SHIFT - IO_TLB_SHIFT);
- /* avoid tail segment of size < IO_TLB_SEGSIZE */
- io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE);
+ iotlb_nslabs = simple_strtoul(str, &str, 0) <<
+ (20 - IO_TLB_SHIFT);
+ iotlb_nslabs = ALIGN(iotlb_nslabs, IO_TLB_SEGSIZE);
+ /* Round up to power of two (xen_create_contiguous_region). */
+ while (iotlb_nslabs & (iotlb_nslabs-1))
+ iotlb_nslabs += iotlb_nslabs & ~(iotlb_nslabs-1);
}
if (*str == ',')
++str;
@@ -114,45 +118,55 @@
void
swiotlb_init_with_default_size (size_t default_size)
{
- unsigned long i;
-
- if (!io_tlb_nslabs) {
- io_tlb_nslabs = (default_size >> PAGE_SHIFT);
- io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE);
- }
+ unsigned long i, bytes;
+
+ if (!iotlb_nslabs) {
+ iotlb_nslabs = (default_size >> IO_TLB_SHIFT);
+ iotlb_nslabs = ALIGN(iotlb_nslabs, IO_TLB_SEGSIZE);
+ /* Round up to power of two (xen_create_contiguous_region). */
+ while (iotlb_nslabs & (iotlb_nslabs-1))
+ iotlb_nslabs += iotlb_nslabs & ~(iotlb_nslabs-1);
+ }
+
+ bytes = iotlb_nslabs * (1UL << IO_TLB_SHIFT);
/*
* Get IO TLB memory from the low pages
*/
- io_tlb_start = alloc_bootmem_low_pages(io_tlb_nslabs *
- (1 << IO_TLB_SHIFT));
- if (!io_tlb_start)
+ iotlb_virt_start = alloc_bootmem_low_pages(bytes);
+ if (!iotlb_virt_start)
panic("Cannot allocate SWIOTLB buffer");
xen_create_contiguous_region(
- (unsigned long)io_tlb_start,
- get_order(io_tlb_nslabs * (1 << IO_TLB_SHIFT)));
-
- io_tlb_end = io_tlb_start + io_tlb_nslabs * (1 << IO_TLB_SHIFT);
+ (unsigned long)iotlb_virt_start, get_order(bytes));
+
+ iotlb_virt_end = iotlb_virt_start + bytes;
/*
* Allocate and initialize the free list array. This array is used
* to find contiguous free memory regions of size up to IO_TLB_SEGSIZE
- * between io_tlb_start and io_tlb_end.
- */
- io_tlb_list = alloc_bootmem(io_tlb_nslabs * sizeof(int));
- for (i = 0; i < io_tlb_nslabs; i++)
+ * between iotlb_virt_start and iotlb_virt_end.
+ */
+ io_tlb_list = alloc_bootmem(iotlb_nslabs * sizeof(int));
+ for (i = 0; i < iotlb_nslabs; i++)
io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
io_tlb_index = 0;
io_tlb_orig_addr = alloc_bootmem(
- io_tlb_nslabs * sizeof(*io_tlb_orig_addr));
+ iotlb_nslabs * sizeof(*io_tlb_orig_addr));
/*
* Get the overflow emergency buffer
*/
io_tlb_overflow_buffer = alloc_bootmem_low(io_tlb_overflow);
- printk(KERN_INFO "Placing software IO TLB between 0x%lx - 0x%lx\n",
- virt_to_bus(io_tlb_start), virt_to_bus(io_tlb_end-1));
+ iotlb_bus_start = virt_to_bus(iotlb_virt_start);
+ iotlb_bus_end = iotlb_bus_start + bytes;
+ printk(KERN_INFO "Software IO TLB enabled: \n"
+ " Aperture: %lu megabytes\n"
+ " Bus range: 0x%016lx - 0x%016lx\n"
+ " Kernel range: 0x%016lx - 0x%016lx\n",
+ bytes >> 20,
+ (unsigned long)iotlb_bus_start, (unsigned long)iotlb_bus_end,
+ (unsigned long)iotlb_virt_start, (unsigned long)iotlb_virt_end);
}
void
@@ -240,7 +254,7 @@
{
wrap = index = ALIGN(io_tlb_index, stride);
- if (index >= io_tlb_nslabs)
+ if (index >= iotlb_nslabs)
wrap = index = 0;
do {
@@ -260,7 +274,7 @@
IO_TLB_SEGSIZE -1) && io_tlb_list[i];
i--)
io_tlb_list[i] = ++count;
- dma_addr = io_tlb_start +
+ dma_addr = iotlb_virt_start +
(index << IO_TLB_SHIFT);
/*
@@ -268,13 +282,13 @@
* the next round.
*/
io_tlb_index =
- ((index + nslots) < io_tlb_nslabs
+ ((index + nslots) < iotlb_nslabs
? (index + nslots) : 0);
goto found;
}
index += stride;
- if (index >= io_tlb_nslabs)
+ if (index >= iotlb_nslabs)
index = 0;
} while (index != wrap);
@@ -304,7 +318,7 @@
{
unsigned long flags;
int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
- int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
+ int index = (dma_addr - iotlb_virt_start) >> IO_TLB_SHIFT;
struct phys_addr buffer = io_tlb_orig_addr[index];
/*
@@ -345,7 +359,7 @@
static void
sync_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
{
- int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
+ int index = (dma_addr - iotlb_virt_start) >> IO_TLB_SHIFT;
struct phys_addr buffer = io_tlb_orig_addr[index];
BUG_ON((dir != DMA_FROM_DEVICE) && (dir != DMA_TO_DEVICE));
__sync_single(buffer, dma_addr, size, dir);
@@ -431,11 +445,9 @@
swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
int dir)
{
- char *dma_addr = bus_to_virt(dev_addr);
-
- BUG_ON(dir == DMA_NONE);
- if (dma_addr >= io_tlb_start && dma_addr < io_tlb_end)
- unmap_single(hwdev, dma_addr, size, dir);
+ BUG_ON(dir == DMA_NONE);
+ if ((dev_addr >= iotlb_bus_start) && (dev_addr < iotlb_bus_end))
+ unmap_single(hwdev, bus_to_virt(dev_addr), size, dir);
}
/*
@@ -452,22 +464,18 @@
swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
size_t size, int dir)
{
- char *dma_addr = bus_to_virt(dev_addr);
-
- BUG_ON(dir == DMA_NONE);
- if (dma_addr >= io_tlb_start && dma_addr < io_tlb_end)
- sync_single(hwdev, dma_addr, size, dir);
+ BUG_ON(dir == DMA_NONE);
+ if ((dev_addr >= iotlb_bus_start) && (dev_addr < iotlb_bus_end))
+ sync_single(hwdev, bus_to_virt(dev_addr), size, dir);
}
void
swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
size_t size, int dir)
{
- char *dma_addr = bus_to_virt(dev_addr);
-
- BUG_ON(dir == DMA_NONE);
- if (dma_addr >= io_tlb_start && dma_addr < io_tlb_end)
- sync_single(hwdev, dma_addr, size, dir);
+ BUG_ON(dir == DMA_NONE);
+ if ((dev_addr >= iotlb_bus_start) && (dev_addr < iotlb_bus_end))
+ sync_single(hwdev, bus_to_virt(dev_addr), size, dir);
}
/*
@@ -603,11 +611,9 @@
swiotlb_unmap_page(struct device *hwdev, dma_addr_t dma_address,
size_t size, enum dma_data_direction direction)
{
- char *dma_addr = bus_to_virt(dma_address);
-
BUG_ON(direction == DMA_NONE);
- if (dma_addr >= io_tlb_start && dma_addr < io_tlb_end)
- unmap_single(hwdev, dma_addr, size, direction);
+ if ((dma_address >= iotlb_bus_start) && (dma_address < iotlb_bus_end))
+ unmap_single(hwdev, bus_to_virt(dma_address), size, direction);
}
int
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/i386/mm/hypervisor.c
--- a/linux-2.6-xen-sparse/arch/xen/i386/mm/hypervisor.c Thu Aug 18
18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/mm/hypervisor.c Thu Aug 18
18:55:13 2005
@@ -35,6 +35,7 @@
#include <asm/pgtable.h>
#include <asm-xen/hypervisor.h>
#include <asm-xen/balloon.h>
+#include <linux/module.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
#include <linux/percpu.h>
#include <asm/tlbflush.h>
@@ -58,124 +59,124 @@
#ifndef CONFIG_XEN_SHADOW_MODE
void xen_l1_entry_update(pte_t *ptr, pte_t val)
{
- mmu_update_t u;
- u.ptr = virt_to_machine(ptr);
- u.val = pte_val_ma(val);
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
+ mmu_update_t u;
+ u.ptr = virt_to_machine(ptr);
+ u.val = pte_val_ma(val);
+ BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
}
void xen_l2_entry_update(pmd_t *ptr, pmd_t val)
{
- mmu_update_t u;
- u.ptr = virt_to_machine(ptr);
- u.val = pmd_val_ma(val);
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
+ mmu_update_t u;
+ u.ptr = virt_to_machine(ptr);
+ u.val = pmd_val_ma(val);
+ BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
}
#ifdef CONFIG_X86_PAE
void xen_l3_entry_update(pud_t *ptr, pud_t val)
{
- mmu_update_t u;
- u.ptr = virt_to_machine(ptr);
- u.val = pud_val_ma(val);
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
+ mmu_update_t u;
+ u.ptr = virt_to_machine(ptr);
+ u.val = pud_val_ma(val);
+ BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
}
#endif
#ifdef CONFIG_X86_64
void xen_l3_entry_update(pud_t *ptr, pud_t val)
{
- mmu_update_t u;
- u.ptr = virt_to_machine(ptr);
- u.val = val.pud;
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
+ mmu_update_t u;
+ u.ptr = virt_to_machine(ptr);
+ u.val = val.pud;
+ BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
}
void xen_l4_entry_update(pgd_t *ptr, pgd_t val)
{
- mmu_update_t u;
- u.ptr = virt_to_machine(ptr);
- u.val = val.pgd;
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
+ mmu_update_t u;
+ u.ptr = virt_to_machine(ptr);
+ u.val = val.pgd;
+ BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
}
#endif /* CONFIG_X86_64 */
#endif /* CONFIG_XEN_SHADOW_MODE */
void xen_machphys_update(unsigned long mfn, unsigned long pfn)
{
- mmu_update_t u;
- u.ptr = (mfn << PAGE_SHIFT) | MMU_MACHPHYS_UPDATE;
- u.val = pfn;
- BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
+ mmu_update_t u;
+ u.ptr = (mfn << PAGE_SHIFT) | MMU_MACHPHYS_UPDATE;
+ u.val = pfn;
+ BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);
}
void xen_pt_switch(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_NEW_BASEPTR;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_NEW_BASEPTR;
+ op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_new_user_pt(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_NEW_USER_BASEPTR;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_NEW_USER_BASEPTR;
+ op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_tlb_flush(void)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_TLB_FLUSH_LOCAL;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_TLB_FLUSH_LOCAL;
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_invlpg(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_INVLPG_LOCAL;
- op.linear_addr = ptr & PAGE_MASK;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_INVLPG_LOCAL;
+ op.linear_addr = ptr & PAGE_MASK;
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
#ifdef CONFIG_SMP
void xen_tlb_flush_all(void)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_TLB_FLUSH_ALL;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_TLB_FLUSH_ALL;
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_tlb_flush_mask(cpumask_t *mask)
{
- struct mmuext_op op;
- if ( cpus_empty(*mask) )
- return;
- op.cmd = MMUEXT_TLB_FLUSH_MULTI;
- op.vcpumask = mask->bits;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ if ( cpus_empty(*mask) )
+ return;
+ op.cmd = MMUEXT_TLB_FLUSH_MULTI;
+ op.vcpumask = mask->bits;
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_invlpg_all(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_INVLPG_ALL;
- op.linear_addr = ptr & PAGE_MASK;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_INVLPG_ALL;
+ op.linear_addr = ptr & PAGE_MASK;
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_invlpg_mask(cpumask_t *mask, unsigned long ptr)
{
- struct mmuext_op op;
- if ( cpus_empty(*mask) )
- return;
- op.cmd = MMUEXT_INVLPG_MULTI;
- op.vcpumask = mask->bits;
- op.linear_addr = ptr & PAGE_MASK;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ if ( cpus_empty(*mask) )
+ return;
+ op.cmd = MMUEXT_INVLPG_MULTI;
+ op.vcpumask = mask->bits;
+ op.linear_addr = ptr & PAGE_MASK;
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
#endif /* CONFIG_SMP */
@@ -183,222 +184,281 @@
#ifndef CONFIG_XEN_SHADOW_MODE
void xen_pgd_pin(unsigned long ptr)
{
- struct mmuext_op op;
+ struct mmuext_op op;
#ifdef CONFIG_X86_64
- op.cmd = MMUEXT_PIN_L4_TABLE;
+ op.cmd = MMUEXT_PIN_L4_TABLE;
#elif defined(CONFIG_X86_PAE)
- op.cmd = MMUEXT_PIN_L3_TABLE;
+ op.cmd = MMUEXT_PIN_L3_TABLE;
#else
- op.cmd = MMUEXT_PIN_L2_TABLE;
-#endif
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ op.cmd = MMUEXT_PIN_L2_TABLE;
+#endif
+ op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_pgd_unpin(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_UNPIN_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_UNPIN_TABLE;
+ op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_pte_pin(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_PIN_L1_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_PIN_L1_TABLE;
+ op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_pte_unpin(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_UNPIN_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_UNPIN_TABLE;
+ op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
#ifdef CONFIG_X86_64
void xen_pud_pin(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_PIN_L3_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_PIN_L3_TABLE;
+ op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_pud_unpin(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_UNPIN_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_UNPIN_TABLE;
+ op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_pmd_pin(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_PIN_L2_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_PIN_L2_TABLE;
+ op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
void xen_pmd_unpin(unsigned long ptr)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_UNPIN_TABLE;
- op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_UNPIN_TABLE;
+ op.mfn = pfn_to_mfn(ptr >> PAGE_SHIFT);
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
}
#endif /* CONFIG_X86_64 */
#endif /* CONFIG_XEN_SHADOW_MODE */
void xen_set_ldt(unsigned long ptr, unsigned long len)
{
- struct mmuext_op op;
- op.cmd = MMUEXT_SET_LDT;
- op.linear_addr = ptr;
- op.nr_ents = len;
- BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+ struct mmuext_op op;
+ op.cmd = MMUEXT_SET_LDT;
+ op.linear_addr = ptr;
+ op.nr_ents = len;
+ BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0);
+}
+
+/*
+ * Bitmap is indexed by page number. If bit is set, the page is part of a
+ * xen_create_contiguous_region() area of memory.
+ */
+unsigned long *contiguous_bitmap;
+
+static void contiguous_bitmap_set(
+ unsigned long first_page, unsigned long nr_pages)
+{
+ unsigned long start_off, end_off, curr_idx, end_idx;
+
+ curr_idx = first_page / BITS_PER_LONG;
+ start_off = first_page & (BITS_PER_LONG-1);
+ end_idx = (first_page + nr_pages) / BITS_PER_LONG;
+ end_off = (first_page + nr_pages) & (BITS_PER_LONG-1);
+
+ if (curr_idx == end_idx) {
+ contiguous_bitmap[curr_idx] |=
+ ((1UL<<end_off)-1) & -(1UL<<start_off);
+ } else {
+ contiguous_bitmap[curr_idx] |= -(1UL<<start_off);
+ while ( ++curr_idx < end_idx )
+ contiguous_bitmap[curr_idx] = ~0UL;
+ contiguous_bitmap[curr_idx] |= (1UL<<end_off)-1;
+ }
+}
+
+static void contiguous_bitmap_clear(
+ unsigned long first_page, unsigned long nr_pages)
+{
+ unsigned long start_off, end_off, curr_idx, end_idx;
+
+ curr_idx = first_page / BITS_PER_LONG;
+ start_off = first_page & (BITS_PER_LONG-1);
+ end_idx = (first_page + nr_pages) / BITS_PER_LONG;
+ end_off = (first_page + nr_pages) & (BITS_PER_LONG-1);
+
+ if (curr_idx == end_idx) {
+ contiguous_bitmap[curr_idx] &=
+ -(1UL<<end_off) | ((1UL<<start_off)-1);
+ } else {
+ contiguous_bitmap[curr_idx] &= (1UL<<start_off)-1;
+ while ( ++curr_idx != end_idx )
+ contiguous_bitmap[curr_idx] = 0;
+ contiguous_bitmap[curr_idx] &= -(1UL<<end_off);
+ }
}
/* Ensure multi-page extents are contiguous in machine memory. */
void xen_create_contiguous_region(unsigned long vstart, unsigned int order)
{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- unsigned long mfn, i, flags;
-
- scrub_pages(vstart, 1 << order);
-
- balloon_lock(flags);
-
- /* 1. Zap current PTEs, giving away the underlying pages. */
- for (i = 0; i < (1<<order); i++) {
- pgd = pgd_offset_k(vstart + (i*PAGE_SIZE));
- pud = pud_offset(pgd, (vstart + (i*PAGE_SIZE)));
- pmd = pmd_offset(pud, (vstart + (i*PAGE_SIZE)));
- pte = pte_offset_kernel(pmd, (vstart + (i*PAGE_SIZE)));
- mfn = pte_mfn(*pte);
- BUG_ON(HYPERVISOR_update_va_mapping(
- vstart + (i*PAGE_SIZE), __pte_ma(0), 0));
- phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] =
- INVALID_P2M_ENTRY;
- BUG_ON(HYPERVISOR_dom_mem_op(
- MEMOP_decrease_reservation, &mfn, 1, 0) != 1);
- }
-
- /* 2. Get a new contiguous memory extent. */
- BUG_ON(HYPERVISOR_dom_mem_op(
- MEMOP_increase_reservation, &mfn, 1, order | (32<<8)) != 1);
-
- /* 3. Map the new extent in place of old pages. */
- for (i = 0; i < (1<<order); i++) {
- BUG_ON(HYPERVISOR_update_va_mapping(
- vstart + (i*PAGE_SIZE),
- __pte_ma(((mfn+i)<<PAGE_SHIFT)|__PAGE_KERNEL), 0));
- xen_machphys_update(mfn+i, (__pa(vstart)>>PAGE_SHIFT)+i);
- phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] = mfn+i;
- }
-
- flush_tlb_all();
-
- balloon_unlock(flags);
+ pgd_t *pgd;
+ pud_t *pud;
+ pmd_t *pmd;
+ pte_t *pte;
+ unsigned long mfn, i, flags;
+
+ scrub_pages(vstart, 1 << order);
+
+ balloon_lock(flags);
+
+ /* 1. Zap current PTEs, giving away the underlying pages. */
+ for (i = 0; i < (1<<order); i++) {
+ pgd = pgd_offset_k(vstart + (i*PAGE_SIZE));
+ pud = pud_offset(pgd, (vstart + (i*PAGE_SIZE)));
+ pmd = pmd_offset(pud, (vstart + (i*PAGE_SIZE)));
+ pte = pte_offset_kernel(pmd, (vstart + (i*PAGE_SIZE)));
+ mfn = pte_mfn(*pte);
+ BUG_ON(HYPERVISOR_update_va_mapping(
+ vstart + (i*PAGE_SIZE), __pte_ma(0), 0));
+ phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] =
+ INVALID_P2M_ENTRY;
+ BUG_ON(HYPERVISOR_dom_mem_op(
+ MEMOP_decrease_reservation, &mfn, 1, 0) != 1);
+ }
+
+ /* 2. Get a new contiguous memory extent. */
+ BUG_ON(HYPERVISOR_dom_mem_op(
+ MEMOP_increase_reservation, &mfn, 1, order | (32<<8)) != 1);
+
+ /* 3. Map the new extent in place of old pages. */
+ for (i = 0; i < (1<<order); i++) {
+ BUG_ON(HYPERVISOR_update_va_mapping(
+ vstart + (i*PAGE_SIZE),
+ pfn_pte_ma(mfn+i, PAGE_KERNEL), 0));
+ xen_machphys_update(mfn+i, (__pa(vstart)>>PAGE_SHIFT)+i);
+ phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] = mfn+i;
+ }
+
+ flush_tlb_all();
+
+ contiguous_bitmap_set(__pa(vstart) >> PAGE_SHIFT, 1UL << order);
+
+ balloon_unlock(flags);
}
void xen_destroy_contiguous_region(unsigned long vstart, unsigned int order)
{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- unsigned long mfn, i, flags;
-
- scrub_pages(vstart, 1 << order);
-
- balloon_lock(flags);
-
- /* 1. Zap current PTEs, giving away the underlying pages. */
- for (i = 0; i < (1<<order); i++) {
- pgd = pgd_offset_k(vstart + (i*PAGE_SIZE));
- pud = pud_offset(pgd, (vstart + (i*PAGE_SIZE)));
- pmd = pmd_offset(pud, (vstart + (i*PAGE_SIZE)));
- pte = pte_offset_kernel(pmd, (vstart + (i*PAGE_SIZE)));
- mfn = pte_mfn(*pte);
- BUG_ON(HYPERVISOR_update_va_mapping(
- vstart + (i*PAGE_SIZE), __pte_ma(0), 0));
- phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] =
- INVALID_P2M_ENTRY;
- BUG_ON(HYPERVISOR_dom_mem_op(
- MEMOP_decrease_reservation, &mfn, 1, 0) != 1);
- }
-
- /* 2. Map new pages in place of old pages. */
- for (i = 0; i < (1<<order); i++) {
- BUG_ON(HYPERVISOR_dom_mem_op(
- MEMOP_increase_reservation, &mfn, 1, 0) != 1);
- BUG_ON(HYPERVISOR_update_va_mapping(
- vstart + (i*PAGE_SIZE),
- __pte_ma((mfn<<PAGE_SHIFT)|__PAGE_KERNEL), 0));
- xen_machphys_update(mfn, (__pa(vstart)>>PAGE_SHIFT)+i);
- phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] = mfn;
- }
-
- flush_tlb_all();
-
- balloon_unlock(flags);
-}
-
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
+ pgd_t *pgd;
+ pud_t *pud;
+ pmd_t *pmd;
+ pte_t *pte;
+ unsigned long mfn, i, flags;
+
+ scrub_pages(vstart, 1 << order);
+
+ balloon_lock(flags);
+
+ contiguous_bitmap_clear(__pa(vstart) >> PAGE_SHIFT, 1UL << order);
+
+ /* 1. Zap current PTEs, giving away the underlying pages. */
+ for (i = 0; i < (1<<order); i++) {
+ pgd = pgd_offset_k(vstart + (i*PAGE_SIZE));
+ pud = pud_offset(pgd, (vstart + (i*PAGE_SIZE)));
+ pmd = pmd_offset(pud, (vstart + (i*PAGE_SIZE)));
+ pte = pte_offset_kernel(pmd, (vstart + (i*PAGE_SIZE)));
+ mfn = pte_mfn(*pte);
+ BUG_ON(HYPERVISOR_update_va_mapping(
+ vstart + (i*PAGE_SIZE), __pte_ma(0), 0));
+ phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] =
+ INVALID_P2M_ENTRY;
+ BUG_ON(HYPERVISOR_dom_mem_op(
+ MEMOP_decrease_reservation, &mfn, 1, 0) != 1);
+ }
+
+ /* 2. Map new pages in place of old pages. */
+ for (i = 0; i < (1<<order); i++) {
+ BUG_ON(HYPERVISOR_dom_mem_op(
+ MEMOP_increase_reservation, &mfn, 1, 0) != 1);
+ BUG_ON(HYPERVISOR_update_va_mapping(
+ vstart + (i*PAGE_SIZE),
+ pfn_pte_ma(mfn, PAGE_KERNEL), 0));
+ xen_machphys_update(mfn, (__pa(vstart)>>PAGE_SHIFT)+i);
+ phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] = mfn;
+ }
+
+ flush_tlb_all();
+
+ balloon_unlock(flags);
+}
+
unsigned long allocate_empty_lowmem_region(unsigned long pages)
{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- unsigned long *pfn_array;
- unsigned long vstart;
- unsigned long i;
- unsigned int order = get_order(pages*PAGE_SIZE);
-
- vstart = __get_free_pages(GFP_KERNEL, order);
- if ( vstart == 0 )
- return 0UL;
-
- scrub_pages(vstart, 1 << order);
-
- pfn_array = vmalloc((1<<order) * sizeof(*pfn_array));
- if ( pfn_array == NULL )
- BUG();
-
- for ( i = 0; i < (1<<order); i++ )
- {
- pgd = pgd_offset_k( (vstart + (i*PAGE_SIZE)));
- pud = pud_offset(pgd, (vstart + (i*PAGE_SIZE)));
- pmd = pmd_offset(pud, (vstart + (i*PAGE_SIZE)));
- pte = pte_offset_kernel(pmd, (vstart + (i*PAGE_SIZE)));
- pfn_array[i] = pte_mfn(*pte);
+ pgd_t *pgd;
+ pud_t *pud;
+ pmd_t *pmd;
+ pte_t *pte;
+ unsigned long *pfn_array;
+ unsigned long vstart;
+ unsigned long i;
+ unsigned int order = get_order(pages*PAGE_SIZE);
+
+ vstart = __get_free_pages(GFP_KERNEL, order);
+ if (vstart == 0)
+ return 0UL;
+
+ scrub_pages(vstart, 1 << order);
+
+ pfn_array = vmalloc((1<<order) * sizeof(*pfn_array));
+ BUG_ON(pfn_array == NULL);
+
+ for (i = 0; i < (1<<order); i++) {
+ pgd = pgd_offset_k( (vstart + (i*PAGE_SIZE)));
+ pud = pud_offset(pgd, (vstart + (i*PAGE_SIZE)));
+ pmd = pmd_offset(pud, (vstart + (i*PAGE_SIZE)));
+ pte = pte_offset_kernel(pmd, (vstart + (i*PAGE_SIZE)));
+ pfn_array[i] = pte_mfn(*pte);
#ifdef CONFIG_X86_64
- xen_l1_entry_update(pte, __pte(0));
+ xen_l1_entry_update(pte, __pte(0));
#else
- BUG_ON(HYPERVISOR_update_va_mapping(vstart + (i*PAGE_SIZE),
- __pte_ma(0), 0));
-#endif
- phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] =
- INVALID_P2M_ENTRY;
- }
-
- flush_tlb_all();
-
- balloon_put_pages(pfn_array, 1 << order);
-
- vfree(pfn_array);
-
- return vstart;
-}
-
-#endif /* CONFIG_XEN_PHYSDEV_ACCESS */
+ BUG_ON(HYPERVISOR_update_va_mapping(vstart + (i*PAGE_SIZE),
+ __pte_ma(0), 0));
+#endif
+ phys_to_machine_mapping[(__pa(vstart)>>PAGE_SHIFT)+i] =
+ INVALID_P2M_ENTRY;
+ }
+
+ flush_tlb_all();
+
+ balloon_put_pages(pfn_array, 1 << order);
+
+ vfree(pfn_array);
+
+ return vstart;
+}
+
+EXPORT_SYMBOL(allocate_empty_lowmem_region);
+
+/*
+ * Local variables:
+ * c-file-style: "linux"
+ * indent-tabs-mode: t
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/i386/mm/init.c
--- a/linux-2.6-xen-sparse/arch/xen/i386/mm/init.c Thu Aug 18 18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/mm/init.c Thu Aug 18 18:55:13 2005
@@ -41,6 +41,8 @@
#include <asm/sections.h>
#include <asm-xen/hypervisor.h>
+extern unsigned long *contiguous_bitmap;
+
#if defined(CONFIG_SWIOTLB)
extern void swiotlb_init(void);
int swiotlb;
@@ -636,6 +638,11 @@
int tmp;
int bad_ppro;
unsigned long pfn;
+
+ contiguous_bitmap = alloc_bootmem_low_pages(
+ (max_low_pfn + 2*BITS_PER_LONG) >> 3);
+ BUG_ON(!contiguous_bitmap);
+ memset(contiguous_bitmap, 0, (max_low_pfn + 2*BITS_PER_LONG) >> 3);
#if defined(CONFIG_SWIOTLB)
swiotlb_init();
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/i386/mm/ioremap.c
--- a/linux-2.6-xen-sparse/arch/xen/i386/mm/ioremap.c Thu Aug 18 18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/mm/ioremap.c Thu Aug 18 18:55:13 2005
@@ -300,17 +300,17 @@
static int direct_remap_area_pte_fn(pte_t *pte,
- struct page *pte_page,
- unsigned long address,
- void *data)
-{
- mmu_update_t **v = (mmu_update_t **)data;
-
- (*v)->ptr = (pfn_to_mfn(page_to_pfn(pte_page)) << PAGE_SHIFT)
- | ((unsigned long)pte & ~PAGE_MASK);
- (*v)++;
-
- return 0;
+ struct page *pte_page,
+ unsigned long address,
+ void *data)
+{
+ mmu_update_t **v = (mmu_update_t **)data;
+
+ (*v)->ptr = ((physaddr_t)pfn_to_mfn(page_to_pfn(pte_page)) <<
+ PAGE_SHIFT) | ((unsigned long)pte & ~PAGE_MASK);
+ (*v)++;
+
+ return 0;
}
int direct_remap_area_pages(struct mm_struct *mm,
@@ -397,6 +397,16 @@
}
return generic_page_range(mm, address, size, f, NULL);
-}
+}
EXPORT_SYMBOL(touch_pte_range);
+
+/*
+ * Local variables:
+ * c-file-style: "linux"
+ * indent-tabs-mode: t
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/kernel/skbuff.c
--- a/linux-2.6-xen-sparse/arch/xen/kernel/skbuff.c Thu Aug 18 18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/kernel/skbuff.c Thu Aug 18 18:55:13 2005
@@ -5,8 +5,6 @@
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/etherdevice.h>
@@ -14,34 +12,86 @@
#include <linux/init.h>
#include <asm/io.h>
#include <asm/page.h>
-
-EXPORT_SYMBOL(__dev_alloc_skb);
+#include <asm-xen/hypervisor.h>
/* Referenced in netback.c. */
/*static*/ kmem_cache_t *skbuff_cachep;
-/* Size must be cacheline-aligned (alloc_skb uses SKB_DATA_ALIGN). */
-#define XEN_SKB_SIZE \
- ((PAGE_SIZE - sizeof(struct skb_shared_info)) & ~(SMP_CACHE_BYTES - 1))
+#define MAX_SKBUFF_ORDER 2
+static kmem_cache_t *skbuff_order_cachep[MAX_SKBUFF_ORDER + 1];
struct sk_buff *__dev_alloc_skb(unsigned int length, int gfp_mask)
{
- struct sk_buff *skb;
- skb = alloc_skb_from_cache(skbuff_cachep, length + 16, gfp_mask);
- if ( likely(skb != NULL) )
- skb_reserve(skb, 16);
- return skb;
+ struct sk_buff *skb;
+ int order;
+
+ length = SKB_DATA_ALIGN(length + 16);
+ order = get_order(length + sizeof(struct skb_shared_info));
+ if (order > MAX_SKBUFF_ORDER) {
+ printk(KERN_ALERT "Attempt to allocate order %d skbuff. "
+ "Increase MAX_SKBUFF_ORDER.\n", order);
+ return NULL;
+ }
+
+ skb = alloc_skb_from_cache(
+ skbuff_order_cachep[order], length, gfp_mask);
+ if (skb != NULL)
+ skb_reserve(skb, 16);
+
+ return skb;
}
static void skbuff_ctor(void *buf, kmem_cache_t *cachep, unsigned long unused)
{
- scrub_pages(buf, 1);
+ int order = 0;
+
+ while (skbuff_order_cachep[order] != cachep)
+ order++;
+
+ if (order != 0)
+ xen_create_contiguous_region((unsigned long)buf, order);
+
+ scrub_pages(buf, 1 << order);
+}
+
+static void skbuff_dtor(void *buf, kmem_cache_t *cachep, unsigned long unused)
+{
+ int order = 0;
+
+ while (skbuff_order_cachep[order] != cachep)
+ order++;
+
+ if (order != 0)
+ xen_destroy_contiguous_region((unsigned long)buf, order);
}
static int __init skbuff_init(void)
{
- skbuff_cachep = kmem_cache_create(
- "xen-skb", PAGE_SIZE, PAGE_SIZE, 0, skbuff_ctor, NULL);
- return 0;
+ static char name[MAX_SKBUFF_ORDER + 1][20];
+ unsigned long size;
+ int order;
+
+ for (order = 0; order <= MAX_SKBUFF_ORDER; order++) {
+ size = PAGE_SIZE << order;
+ sprintf(name[order], "xen-skb-%lu", size);
+ skbuff_order_cachep[order] = kmem_cache_create(
+ name[order], size, size, 0, skbuff_ctor, skbuff_dtor);
+ }
+
+ skbuff_cachep = skbuff_order_cachep[0];
+
+ return 0;
}
__initcall(skbuff_init);
+
+EXPORT_SYMBOL(__dev_alloc_skb);
+
+/*
+ * Local variables:
+ * c-file-style: "linux"
+ * indent-tabs-mode: t
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/x86_64/kernel/setup.c
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/kernel/setup.c Thu Aug 18
18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/x86_64/kernel/setup.c Thu Aug 18
18:55:13 2005
@@ -426,16 +426,10 @@
#ifdef CONFIG_XEN
static void __init contig_initmem_init(void)
{
- unsigned long bootmap_size, bootmap;
-
- bootmap_size = bootmem_bootmap_pages(end_pfn)<<PAGE_SHIFT;
- bootmap = start_pfn;
- bootmap_size = init_bootmem(bootmap, end_pfn);
- reserve_bootmem(bootmap, bootmap_size);
-
- free_bootmem(start_pfn << PAGE_SHIFT, (end_pfn - start_pfn) <<
PAGE_SHIFT);
- reserve_bootmem(0, (PFN_PHYS(start_pfn) +
- bootmap_size + PAGE_SIZE-1));
+ unsigned long bootmap_size = init_bootmem(start_pfn, end_pfn);
+ free_bootmem(0, end_pfn << PAGE_SHIFT);
+ /* XXX KAF: Why can't we leave low 1MB of memory free? */
+ reserve_bootmem(0, (PFN_PHYS(start_pfn) + bootmap_size + PAGE_SIZE-1));
}
#else
static void __init contig_initmem_init(void)
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/x86_64/mm/fault.c
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/mm/fault.c Thu Aug 18 18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/x86_64/mm/fault.c Thu Aug 18 18:55:13 2005
@@ -250,7 +250,11 @@
happen within a race in page table update. In the later
case just flush. */
- pgd = pgd_offset(current->mm ?: &init_mm, address);
+ /* On Xen the line below does not always work. Needs investigating! */
+ /*pgd = pgd_offset(current->mm ?: &init_mm, address);*/
+ pgd = (pgd_t *)per_cpu(cur_pgd, smp_processor_id());
+ pgd += pgd_index(address);
+
pgd_ref = pgd_offset_k(address);
if (pgd_none(*pgd_ref))
return -1;
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/arch/xen/x86_64/mm/init.c
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/mm/init.c Thu Aug 18 18:54:38 2005
+++ b/linux-2.6-xen-sparse/arch/xen/x86_64/mm/init.c Thu Aug 18 18:55:13 2005
@@ -39,6 +39,12 @@
#include <asm/mmu_context.h>
#include <asm/proto.h>
#include <asm/smp.h>
+
+extern unsigned long *contiguous_bitmap;
+
+#if defined(CONFIG_SWIOTLB)
+extern void swiotlb_init(void);
+#endif
#ifndef Dprintk
#define Dprintk(x...)
@@ -794,8 +800,12 @@
int codesize, reservedpages, datasize, initsize;
int tmp;
+ contiguous_bitmap = alloc_bootmem_low_pages(
+ (end_pfn + 2*BITS_PER_LONG) >> 3);
+ BUG_ON(!contiguous_bitmap);
+ memset(contiguous_bitmap, 0, (end_pfn + 2*BITS_PER_LONG) >> 3);
+
#if defined(CONFIG_SWIOTLB)
- extern void swiotlb_init(void);
swiotlb_init();
#endif
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c
--- a/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c Thu Aug 18
18:54:38 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c Thu Aug 18
18:55:13 2005
@@ -213,9 +213,7 @@
{
BUG_ON(HYPERVISOR_update_va_mapping(
(unsigned long)__va(pfn << PAGE_SHIFT),
- __pte_ma((mfn_list[i] << PAGE_SHIFT) |
- pgprot_val(PAGE_KERNEL)),
- 0));
+ pfn_pte_ma(mfn_list[i], PAGE_KERNEL), 0));
}
/* Finally, relinquish the memory back to the system allocator. */
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/drivers/xen/blkback/blkback.c
--- a/linux-2.6-xen-sparse/drivers/xen/blkback/blkback.c Thu Aug 18
18:54:38 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/blkback/blkback.c Thu Aug 18
18:55:13 2005
@@ -406,21 +406,15 @@
#endif
-#ifdef CONFIG_XEN_BLKDEV_TAP_BE
if ( HYPERVISOR_update_va_mapping_otherdomain(
MMAP_VADDR(pending_idx, 0),
- (pte_t) { (req->frame_and_sects[0] & PAGE_MASK) | __PAGE_KERNEL },
+ pfn_pte_ma(req->frame_and_sects[0] >> PAGE_SHIFT, PAGE_KERNEL),
+#ifdef CONFIG_XEN_BLKDEV_TAP_BE
0, (blkif->is_blktap ? ID_TO_DOM(req->id) : blkif->domid) ) )
-
+#else
+ 0, blkif->domid) )
+#endif
goto out;
-#else
- if ( HYPERVISOR_update_va_mapping_otherdomain(
- MMAP_VADDR(pending_idx, 0),
- (pte_t) { (req->frame_and_sects[0] & PAGE_MASK) | __PAGE_KERNEL },
- 0, blkif->domid) )
-
- goto out;
-#endif
#endif /* endif CONFIG_XEN_BLKDEV_GRANT */
rsp = vbd_probe(blkif, (vdisk_t *)MMAP_VADDR(pending_idx, 0),
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/include/asm-xen/asm-i386/dma-mapping.h
--- a/linux-2.6-xen-sparse/include/asm-xen/asm-i386/dma-mapping.h Thu Aug
18 18:54:38 2005
+++ b/linux-2.6-xen-sparse/include/asm-xen/asm-i386/dma-mapping.h Thu Aug
18 18:55:13 2005
@@ -26,7 +26,9 @@
static inline int
range_straddles_page_boundary(void *p, size_t size)
{
- return ((((unsigned long)p & ~PAGE_MASK) + size) > PAGE_SIZE);
+ extern unsigned long *contiguous_bitmap;
+ return (((((unsigned long)p & ~PAGE_MASK) + size) > PAGE_SIZE) &&
+ !test_bit(__pa(p) >> PAGE_SHIFT, contiguous_bitmap));
}
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
diff -r 9471090bb8ec -r 11f556cac45b
linux-2.6-xen-sparse/include/asm-xen/hypervisor.h
--- a/linux-2.6-xen-sparse/include/asm-xen/hypervisor.h Thu Aug 18 18:54:38 2005
+++ b/linux-2.6-xen-sparse/include/asm-xen/hypervisor.h Thu Aug 18 18:55:13 2005
@@ -137,10 +137,8 @@
void xen_create_contiguous_region(unsigned long vstart, unsigned int order);
void xen_destroy_contiguous_region(unsigned long vstart, unsigned int order);
-#ifdef CONFIG_XEN_PHYSDEV_ACCESS
/* Allocate a contiguous empty region of low memory. Return virtual start. */
unsigned long allocate_empty_lowmem_region(unsigned long pages);
-#endif
#include <asm/hypercall.h>
diff -r 9471090bb8ec -r 11f556cac45b tools/examples/network-bridge
--- a/tools/examples/network-bridge Thu Aug 18 18:54:38 2005
+++ b/tools/examples/network-bridge Thu Aug 18 18:55:13 2005
@@ -51,7 +51,7 @@
bridge=${bridge:-xen-br0}
netdev=${netdev:-eth0}
-antispoof=${antispoof:-yes}
+antispoof=${antispoof:-no}
echo "*network $OP bridge=$bridge netdev=$netdev antispoof=$antispoof" >&2
diff -r 9471090bb8ec -r 11f556cac45b tools/python/xen/xm/create.py
--- a/tools/python/xen/xm/create.py Thu Aug 18 18:54:38 2005
+++ b/tools/python/xen/xm/create.py Thu Aug 18 18:55:13 2005
@@ -23,6 +23,7 @@
import sys
import socket
import commands
+import time
import xen.lowlevel.xc
@@ -674,18 +675,33 @@
return 0
def balloon_out(dom0_min_mem, opts):
- """Balloon out to get memory for domU, if necessarily"""
+ """Balloon out memory from dom0 if necessary"""
SLACK = 4
+ timeout = 20 # 2s
+ ret = 0
xc = xen.lowlevel.xc.new()
pinfo = xc.physinfo()
- free_mem = pinfo['free_pages']/256
- if free_mem < opts.vals.memory + SLACK:
- need_mem = opts.vals.memory + SLACK - free_mem
- cur_alloc = get_dom0_alloc()
- if cur_alloc - need_mem >= dom0_min_mem:
- server.xend_domain_mem_target_set(0, cur_alloc - need_mem)
+ free_mem = pinfo['free_pages'] / 256
+ domU_need_mem = opts.vals.memory + SLACK
+
+ dom0_cur_alloc = get_dom0_alloc()
+ dom0_new_alloc = dom0_cur_alloc - (domU_need_mem - free_mem)
+
+ if free_mem < domU_need_mem and dom0_new_alloc >= dom0_min_mem:
+
+ server.xend_domain_mem_target_set(0, dom0_new_alloc)
+
+ while dom0_cur_alloc > dom0_new_alloc and timeout > 0:
+ time.sleep(0.1) # sleep 100ms
+ dom0_cur_alloc = get_dom0_alloc()
+ timeout -= 1
+
+ if dom0_cur_alloc > dom0_new_alloc:
+ ret = 1
+
del xc
+ return ret
def main(argv):
random.seed()
@@ -717,7 +733,8 @@
else:
dom0_min_mem = xroot.get_dom0_min_mem()
if dom0_min_mem != 0:
- balloon_out(dom0_min_mem, opts)
+ if balloon_out(dom0_min_mem, opts):
+ return
dom = make_domain(opts, config)
if opts.vals.console_autoconnect:
diff -r 9471090bb8ec -r 11f556cac45b tools/python/xen/xm/main.py
--- a/tools/python/xen/xm/main.py Thu Aug 18 18:54:38 2005
+++ b/tools/python/xen/xm/main.py Thu Aug 18 18:55:13 2005
@@ -200,7 +200,11 @@
def xm_list(args):
use_long = 0
show_vcpus = 0
- (options, params) = getopt(args, 'lv', ['long','vcpus'])
+ try:
+ (options, params) = getopt(args, 'lv', ['long','vcpus'])
+ except GetoptError, opterr:
+ err(opterr)
+ sys.exit(1)
n = len(params)
for (k, v) in options:
diff -r 9471090bb8ec -r 11f556cac45b xen/arch/x86/mm.c
--- a/xen/arch/x86/mm.c Thu Aug 18 18:54:38 2005
+++ b/xen/arch/x86/mm.c Thu Aug 18 18:55:13 2005
@@ -3059,7 +3059,7 @@
}
/* Turn a sub-word access into a full-word access. */
- if (bytes != sizeof(physaddr_t))
+ if ( bytes != sizeof(physaddr_t) )
{
int rc;
physaddr_t full;
@@ -3076,6 +3076,10 @@
val &= (((physaddr_t)1 << (bytes*8)) - 1);
val <<= (offset)*8;
val |= full;
+ /* Also fill in missing parts of the cmpxchg old value. */
+ old &= (((physaddr_t)1 << (bytes*8)) - 1);
+ old <<= (offset)*8;
+ old |= full;
}
/* Read the PTE that maps the page being updated. */
@@ -3111,7 +3115,7 @@
if ( do_cmpxchg )
{
ol1e = l1e_from_intpte(old);
- if ( cmpxchg((unsigned long *)pl1e, old, val) != old )
+ if ( cmpxchg((intpte_t *)pl1e, old, val) != old )
{
unmap_domain_page(pl1e);
put_page_from_l1e(nl1e, d);
@@ -3299,8 +3303,8 @@
/* Finally, make the p.t. page writable by the guest OS. */
l1e_add_flags(pte, _PAGE_RW);
- if ( unlikely(__copy_to_user(&linear_pg_table[l1_linear_offset(addr)],
- &pte, sizeof(pte))) )
+ if ( unlikely(__put_user(pte.l1,
+ &linear_pg_table[l1_linear_offset(addr)].l1)) )
{
MEM_LOG("ptwr: Could not update pte at %p", (unsigned long *)
&linear_pg_table[l1_linear_offset(addr)]);
diff -r 9471090bb8ec -r 11f556cac45b xen/arch/x86/setup.c
--- a/xen/arch/x86/setup.c Thu Aug 18 18:54:38 2005
+++ b/xen/arch/x86/setup.c Thu Aug 18 18:55:13 2005
@@ -244,6 +244,8 @@
#define EARLY_FAIL() for ( ; ; ) __asm__ __volatile__ ( "hlt" )
+static struct e820entry e820_raw[E820MAX];
+
void __init __start_xen(multiboot_info_t *mbi)
{
char *cmdline;
@@ -253,7 +255,6 @@
unsigned long _initrd_start = 0, _initrd_len = 0;
unsigned int initrdidx = 1;
physaddr_t s, e;
- struct e820entry e820_raw[E820MAX];
int i, e820_raw_nr = 0, bytes = 0;
struct ns16550_defaults ns16550 = {
.data_bits = 8,
diff -r 9471090bb8ec -r 11f556cac45b xen/arch/x86/traps.c
--- a/xen/arch/x86/traps.c Thu Aug 18 18:54:38 2005
+++ b/xen/arch/x86/traps.c Thu Aug 18 18:55:13 2005
@@ -159,10 +159,8 @@
addr = *stack++;
if ( is_kernel_text(addr) )
{
- if ( (i != 0) && ((i % 6) == 0) )
- printk("\n ");
printk("[<%p>]", _p(addr));
- print_symbol(" %s\n", addr);
+ print_symbol(" %s\n ", addr);
i++;
}
}
diff -r 9471090bb8ec -r 11f556cac45b xen/arch/x86/x86_32/traps.c
--- a/xen/arch/x86/x86_32/traps.c Thu Aug 18 18:54:38 2005
+++ b/xen/arch/x86/x86_32/traps.c Thu Aug 18 18:55:13 2005
@@ -66,8 +66,9 @@
printk("CPU: %d\nEIP: %04lx:[<%08lx>]",
smp_processor_id(), (unsigned long)0xffff & regs->cs, eip);
- print_symbol(" %s\n", eip);
- printk("EFLAGS: %08lx CONTEXT: %s\n", eflags, context);
+ if ( !GUEST_MODE(regs) )
+ print_symbol(" %s", eip);
+ printk("\nEFLAGS: %08lx CONTEXT: %s\n", eflags, context);
printk("eax: %08x ebx: %08x ecx: %08x edx: %08x\n",
regs->eax, regs->ebx, regs->ecx, regs->edx);
printk("esi: %08x edi: %08x ebp: %08x esp: %08lx\n",
diff -r 9471090bb8ec -r 11f556cac45b xen/arch/x86/x86_64/traps.c
--- a/xen/arch/x86/x86_64/traps.c Thu Aug 18 18:54:38 2005
+++ b/xen/arch/x86/x86_64/traps.c Thu Aug 18 18:55:13 2005
@@ -17,8 +17,9 @@
{
printk("CPU: %d\nEIP: %04x:[<%016lx>]",
smp_processor_id(), 0xffff & regs->cs, regs->rip);
- print_symbol(" %s\n", regs->rip);
- printk("EFLAGS: %016lx\n", regs->eflags);
+ if ( !GUEST_MODE(regs) )
+ print_symbol(" %s", regs->rip);
+ printk("\nEFLAGS: %016lx\n", regs->eflags);
printk("rax: %016lx rbx: %016lx rcx: %016lx rdx: %016lx\n",
regs->rax, regs->rbx, regs->rcx, regs->rdx);
printk("rsi: %016lx rdi: %016lx rbp: %016lx rsp: %016lx\n",
diff -r 9471090bb8ec -r 11f556cac45b xen/drivers/char/console.c
--- a/xen/drivers/char/console.c Thu Aug 18 18:54:38 2005
+++ b/xen/drivers/char/console.c Thu Aug 18 18:55:13 2005
@@ -652,8 +652,9 @@
void panic(const char *fmt, ...)
{
va_list args;
- char buf[128], cpustr[10];
+ char buf[128];
unsigned long flags;
+ static spinlock_t lock = SPIN_LOCK_UNLOCKED;
extern void machine_restart(char *);
debugtrace_dump();
@@ -665,16 +666,13 @@
debugger_trap_immediate();
/* Spit out multiline message in one go. */
- spin_lock_irqsave(&console_lock, flags);
- __putstr("\n****************************************\n");
- __putstr("Panic on CPU");
- sprintf(cpustr, "%d", smp_processor_id());
- __putstr(cpustr);
- __putstr(":\n");
- __putstr(buf);
- __putstr("****************************************\n\n");
- __putstr("Reboot in five seconds...\n");
- spin_unlock_irqrestore(&console_lock, flags);
+ spin_lock_irqsave(&lock, flags);
+ printk("\n****************************************\n");
+ printk("Panic on CPU %d:\n", smp_processor_id());
+ printk(buf);
+ printk("****************************************\n\n");
+ printk("Reboot in five seconds...\n");
+ spin_unlock_irqrestore(&lock, flags);
watchdog_disable();
mdelay(5000);
diff -r 9471090bb8ec -r 11f556cac45b xen/include/asm-x86/e820.h
--- a/xen/include/asm-x86/e820.h Thu Aug 18 18:54:38 2005
+++ b/xen/include/asm-x86/e820.h Thu Aug 18 18:55:13 2005
@@ -3,7 +3,7 @@
#include <asm/page.h>
-#define E820MAX 32
+#define E820MAX 128
#define E820_RAM 1
#define E820_RESERVED 2
diff -r 9471090bb8ec -r 11f556cac45b xen/include/asm-x86/uaccess.h
--- a/xen/include/asm-x86/uaccess.h Thu Aug 18 18:54:38 2005
+++ b/xen/include/asm-x86/uaccess.h Thu Aug 18 18:55:13 2005
@@ -125,22 +125,20 @@
__pu_err; \
})
-#define __get_user_nocheck(x,ptr,size) \
-({ \
- long __gu_err, __gu_val; \
- __get_user_size(__gu_val,(ptr),(size),__gu_err,-EFAULT);\
- (x) = (__typeof__(*(ptr)))__gu_val; \
- __gu_err; \
+#define __get_user_nocheck(x,ptr,size) \
+({ \
+ long __gu_err; \
+ __get_user_size((x),(ptr),(size),__gu_err,-EFAULT); \
+ __gu_err; \
})
-#define __get_user_check(x,ptr,size) \
-({ \
- long __gu_err, __gu_val; \
- __typeof__(*(ptr)) __user *__gu_addr = (ptr); \
- __get_user_size(__gu_val,__gu_addr,(size),__gu_err,-EFAULT); \
- (x) = (__typeof__(*(ptr)))__gu_val; \
- if (!__addr_ok(__gu_addr)) __gu_err = -EFAULT; \
- __gu_err; \
+#define __get_user_check(x,ptr,size) \
+({ \
+ long __gu_err; \
+ __typeof__(*(ptr)) __user *__gu_addr = (ptr); \
+ __get_user_size((x),__gu_addr,(size),__gu_err,-EFAULT); \
+ if (!__addr_ok(__gu_addr)) __gu_err = -EFAULT; \
+ __gu_err; \
})
struct __large_struct { unsigned long buf[100]; };
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