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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [IA64] Use ppn to store io type.
# HG changeset patch
# User Alex Williamson <alex.williamson@xxxxxx>
# Date 1207064572 21600
# Node ID 408fcc50fd35cca38d9a1440cad2da76a1c6acdc
# Parent 6827df3f7391cc3286cac244b4d5075ab661b89d
[IA64] Use ppn to store io type.
Instead of using 3 extra bits in pte to store the io type, only one bit
is used to mark the page as an IO page and the type is stored in the ppn
field. This both save 2 bits and allow many more io types.
Move the VTi memory map to arch-ia64/hvm/memmap.h
Signed-off-by: Tristan Gingold <tgingold@xxxxxxx>
---
xen/arch/ia64/vmx/mmio.c | 19 ++---
xen/arch/ia64/vmx/sioemu.c | 7 +-
xen/arch/ia64/vmx/vlsapic.c | 1
xen/arch/ia64/vmx/vmmu.c | 2
xen/arch/ia64/vmx/vmx_fault.c | 10 +--
xen/arch/ia64/vmx/vmx_init.c | 13 ++-
xen/arch/ia64/vmx/vtlb.c | 2
xen/arch/ia64/xen/mm.c | 3
xen/include/asm-ia64/linux-xen/asm/pgtable.h | 16 +---
xen/include/asm-ia64/vmmu.h | 2
xen/include/public/arch-ia64.h | 59 +++---------------
xen/include/public/arch-ia64/hvm/memmap.h | 88 +++++++++++++++++++++++++++
12 files changed, 134 insertions(+), 88 deletions(-)
diff -r 6827df3f7391 -r 408fcc50fd35 xen/arch/ia64/vmx/mmio.c
--- a/xen/arch/ia64/vmx/mmio.c Fri Mar 28 15:27:13 2008 -0600
+++ b/xen/arch/ia64/vmx/mmio.c Tue Apr 01 09:42:52 2008 -0600
@@ -39,6 +39,7 @@
#include <asm/hvm/vacpi.h>
#include <asm/hvm/support.h>
#include <public/hvm/save.h>
+#include <public/arch-ia64/hvm/memmap.h>
#include <public/arch-ia64/sioemu.h>
#include <asm/sioemu.h>
@@ -352,11 +353,9 @@ static void legacy_io_access(VCPU *vcpu,
return;
}
-static void mmio_access(VCPU *vcpu, u64 src_pa, u64 *dest, size_t s, int ma,
int dir, u64 pte)
-{
- unsigned long iot = pte & GPFN_IO_MASK;
-
- perfc_incra(vmx_mmio_access, iot >> 56);
+static void mmio_access(VCPU *vcpu, u64 src_pa, u64 *dest, size_t s, int ma,
int dir, u64 iot)
+{
+ perfc_incra(vmx_mmio_access, iot & 0x7);
switch (iot) {
case GPFN_PIB:
if (ma != 4)
@@ -366,8 +365,6 @@ static void mmio_access(VCPU *vcpu, u64
vlsapic_write(vcpu, src_pa, s, *dest);
else
*dest = vlsapic_read(vcpu, src_pa, s);
- break;
- case GPFN_GFW:
break;
case GPFN_IOSAPIC:
if (!dir)
@@ -394,7 +391,7 @@ enum inst_type_en { SL_INTEGER, SL_FLOAT
/*
dir 1: read 0:write
*/
-void emulate_io_inst(VCPU *vcpu, u64 padr, u64 ma, u64 pte)
+void emulate_io_inst(VCPU *vcpu, u64 padr, u64 ma, u64 iot)
{
REGS *regs;
IA64_BUNDLE bundle;
@@ -536,8 +533,6 @@ void emulate_io_inst(VCPU *vcpu, u64 pad
}
if (vcpu->domain->arch.is_sioemu) {
- unsigned long iot = pte & GPFN_IO_MASK;
-
if (iot != GPFN_PIB && iot != GPFN_IOSAPIC) {
sioemu_io_emulate(padr, data, data1, update_word);
return;
@@ -545,10 +540,10 @@ void emulate_io_inst(VCPU *vcpu, u64 pad
}
if (size == 4) {
- mmio_access(vcpu, padr + 8, &data1, 1 << 3, ma, dir, pte);
+ mmio_access(vcpu, padr + 8, &data1, 1 << 3, ma, dir, iot);
size = 3;
}
- mmio_access(vcpu, padr, &data, 1 << size, ma, dir, pte);
+ mmio_access(vcpu, padr, &data, 1 << size, ma, dir, iot);
emulate_io_update(vcpu, update_word, data, data1);
}
diff -r 6827df3f7391 -r 408fcc50fd35 xen/arch/ia64/vmx/sioemu.c
--- a/xen/arch/ia64/vmx/sioemu.c Fri Mar 28 15:27:13 2008 -0600
+++ b/xen/arch/ia64/vmx/sioemu.c Tue Apr 01 09:42:52 2008 -0600
@@ -166,8 +166,11 @@ sioemu_add_io_physmap (struct domain *d,
unsigned long i;
int res;
+ /* Convert to ppn. */
+ type <<= PAGE_SHIFT;
+
/* Check type. */
- if (type == 0 || (type & GPFN_IO_MASK) != type)
+ if (type == 0 || (type & _PAGE_PPN_MASK) != type)
return -EINVAL;
if ((start & (PAGE_SIZE -1)) || (size & (PAGE_SIZE - 1)))
return -EINVAL;
@@ -180,7 +183,7 @@ sioemu_add_io_physmap (struct domain *d,
/* Set. */
for (i = start; i < start + size; i += PAGE_SIZE) {
- res = __assign_domain_page(d, i, type, ASSIGN_writable);
+ res = __assign_domain_page(d, i, type, ASSIGN_writable | ASSIGN_io);
if (res != 0)
return res;
}
diff -r 6827df3f7391 -r 408fcc50fd35 xen/arch/ia64/vmx/vlsapic.c
--- a/xen/arch/ia64/vmx/vlsapic.c Fri Mar 28 15:27:13 2008 -0600
+++ b/xen/arch/ia64/vmx/vlsapic.c Tue Apr 01 09:42:52 2008 -0600
@@ -47,6 +47,7 @@
#include <xen/domain.h>
#include <asm/hvm/support.h>
#include <public/hvm/save.h>
+#include <public/arch-ia64/hvm/memmap.h>
#ifdef IPI_DEBUG
#define IPI_DPRINTK(x...) printk(x)
diff -r 6827df3f7391 -r 408fcc50fd35 xen/arch/ia64/vmx/vmmu.c
--- a/xen/arch/ia64/vmx/vmmu.c Fri Mar 28 15:27:13 2008 -0600
+++ b/xen/arch/ia64/vmx/vmmu.c Tue Apr 01 09:42:52 2008 -0600
@@ -314,7 +314,7 @@ IA64FAULT vmx_vcpu_itr_d(VCPU *vcpu, u64
thash_purge_entries(vcpu, va, ps);
gpfn = (pte & _PAGE_PPN_MASK)>> PAGE_SHIFT;
gpte = lookup_domain_mpa(vcpu->domain, gpfn, NULL);
- if (gpte & GPFN_IO_MASK)
+ if (gpte & _PAGE_IO)
pte |= VTLB_PTE_IO;
vcpu_get_rr(vcpu, va, &rid);
rid &= RR_RID_MASK;
diff -r 6827df3f7391 -r 408fcc50fd35 xen/arch/ia64/vmx/vmx_fault.c
--- a/xen/arch/ia64/vmx/vmx_fault.c Fri Mar 28 15:27:13 2008 -0600
+++ b/xen/arch/ia64/vmx/vmx_fault.c Tue Apr 01 09:42:52 2008 -0600
@@ -372,8 +372,9 @@ vmx_hpw_miss(u64 vadr, u64 vec, REGS* re
return IA64_FAULT;
}
pte = lookup_domain_mpa(v->domain, pa_clear_uc(vadr), NULL);
- if (v->domain != dom0 && (pte & GPFN_IO_MASK)) {
- emulate_io_inst(v, pa_clear_uc(vadr), 4, pte);
+ if (v->domain != dom0 && (pte & _PAGE_IO)) {
+ emulate_io_inst(v, pa_clear_uc(vadr), 4,
+ (pte & _PFN_MASK) >> PAGE_SHIFT);
return IA64_FAULT;
}
physical_tlb_miss(v, vadr, type);
@@ -404,12 +405,13 @@ try_again:
}
gppa = thash_translate(data, vadr);
pte = lookup_domain_mpa(v->domain, gppa, NULL);
- if (pte & GPFN_IO_MASK) {
+ if (pte & _PAGE_IO) {
if (misr.sp)
panic_domain(NULL, "ld.s on I/O page not with UC attr."
" pte=0x%lx\n", data->page_flags);
if (data->pl >= ((regs->cr_ipsr >> IA64_PSR_CPL0_BIT) & 3))
- emulate_io_inst(v, gppa, data->ma, pte);
+ emulate_io_inst(v, gppa, data->ma,
+ (pte & _PFN_MASK) >> PAGE_SHIFT);
else {
vcpu_set_isr(v, misr.val);
data_access_rights(v, vadr);
diff -r 6827df3f7391 -r 408fcc50fd35 xen/arch/ia64/vmx/vmx_init.c
--- a/xen/arch/ia64/vmx/vmx_init.c Fri Mar 28 15:27:13 2008 -0600
+++ b/xen/arch/ia64/vmx/vmx_init.c Tue Apr 01 09:42:52 2008 -0600
@@ -44,6 +44,7 @@
#include <public/xen.h>
#include <public/hvm/ioreq.h>
#include <public/event_channel.h>
+#include <public/arch-ia64/hvm/memmap.h>
#include <asm/vmx_phy_mode.h>
#include <asm/processor.h>
#include <asm/vmx.h>
@@ -553,11 +554,11 @@ typedef struct io_range {
} io_range_t;
static const io_range_t io_ranges[] = {
- {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER},
- {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO},
- {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO},
- {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC},
- {PIB_START, PIB_SIZE, GPFN_PIB},
+ {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER << PAGE_SHIFT},
+ {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO << PAGE_SHIFT},
+ {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO << PAGE_SHIFT},
+ {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC << PAGE_SHIFT},
+ {PIB_START, PIB_SIZE, GPFN_PIB << PAGE_SHIFT},
};
// The P2M table is built in libxc/ia64/xc_ia64_hvm_build.c @ setup_guest()
@@ -571,7 +572,7 @@ static void vmx_build_io_physmap_table(s
for (j = io_ranges[i].start;
j < io_ranges[i].start + io_ranges[i].size; j += PAGE_SIZE)
(void)__assign_domain_page(d, j, io_ranges[i].type,
- ASSIGN_writable);
+ ASSIGN_writable | ASSIGN_io);
}
}
diff -r 6827df3f7391 -r 408fcc50fd35 xen/arch/ia64/vmx/vtlb.c
--- a/xen/arch/ia64/vmx/vtlb.c Fri Mar 28 15:27:13 2008 -0600
+++ b/xen/arch/ia64/vmx/vtlb.c Tue Apr 01 09:42:52 2008 -0600
@@ -515,7 +515,7 @@ static u64 translate_phy_pte(VCPU *v, u6
phy_pte.val = pte;
paddr = ((pte & _PAGE_PPN_MASK) & ps_mask) | (va & ~ps_mask);
maddr = lookup_domain_mpa(d, paddr, NULL);
- if (maddr & GPFN_IO_MASK)
+ if (maddr & _PAGE_IO)
return -1;
/* Ensure WB attribute if pte is related to a normal mem page,
diff -r 6827df3f7391 -r 408fcc50fd35 xen/arch/ia64/xen/mm.c
--- a/xen/arch/ia64/xen/mm.c Fri Mar 28 15:27:13 2008 -0600
+++ b/xen/arch/ia64/xen/mm.c Tue Apr 01 09:42:52 2008 -0600
@@ -886,6 +886,7 @@ flags_to_prot (unsigned long flags)
res |= flags & ASSIGN_tlb_track ? _PAGE_TLB_TRACKING: 0;
#endif
res |= flags & ASSIGN_pgc_allocated ? _PAGE_PGC_ALLOCATED: 0;
+ res |= flags & ASSIGN_io ? _PAGE_IO: 0;
return res;
}
@@ -966,7 +967,7 @@ assign_domain_page(struct domain *d,
{
struct page_info* page = mfn_to_page(physaddr >> PAGE_SHIFT);
- BUG_ON((physaddr & GPFN_IO_MASK) != GPFN_MEM);
+ BUG_ON((physaddr & _PAGE_PPN_MASK) != physaddr);
BUG_ON(page->count_info != (PGC_allocated | 1));
set_gpfn_from_mfn(physaddr >> PAGE_SHIFT, mpaddr >> PAGE_SHIFT);
// because __assign_domain_page() uses set_pte_rel() which has
diff -r 6827df3f7391 -r 408fcc50fd35
xen/include/asm-ia64/linux-xen/asm/pgtable.h
--- a/xen/include/asm-ia64/linux-xen/asm/pgtable.h Fri Mar 28 15:27:13
2008 -0600
+++ b/xen/include/asm-ia64/linux-xen/asm/pgtable.h Tue Apr 01 09:42:52
2008 -0600
@@ -97,17 +97,9 @@
#define _PAGE_PGC_ALLOCATED_BIT 59 /* _PGC_allocated */
#define _PAGE_PGC_ALLOCATED (__IA64_UL(1) << _PAGE_PGC_ALLOCATED_BIT)
-/* domVTI */
-#define GPFN_MEM (0UL << 60) /* Guest pfn is normal mem */
-#define GPFN_FRAME_BUFFER (1UL << 60) /* VGA framebuffer */
-#define GPFN_LOW_MMIO (2UL << 60) /* Low MMIO range */
-#define GPFN_PIB (3UL << 60) /* PIB base */
-#define GPFN_IOSAPIC (4UL << 60) /* IOSAPIC base */
-#define GPFN_LEGACY_IO (5UL << 60) /* Legacy I/O base */
-#define GPFN_GFW (6UL << 60) /* Guest Firmware */
-#define GPFN_HIGH_MMIO (7UL << 60) /* High MMIO range */
-
-#define GPFN_IO_MASK (7UL << 60) /* Guest pfn is I/O type */
+
+#define _PAGE_IO_BIT 60
+#define _PAGE_IO (__IA64_UL(1) << _PAGE_IO_BIT)
#else
#define _PAGE_PROTNONE (__IA64_UL(1) << 63)
@@ -341,7 +333,7 @@ set_pte_rel(volatile pte_t* ptep, pte_t
#define pte_file(pte) ((pte_val(pte) & _PAGE_FILE) != 0)
#ifdef XEN
#define pte_pgc_allocated(pte) ((pte_val(pte) & _PAGE_PGC_ALLOCATED) != 0)
-#define pte_mem(pte) (!(pte_val(pte) & GPFN_IO_MASK) && !pte_none(pte))
+#define pte_mem(pte) (!(pte_val(pte) & _PAGE_IO) && !pte_none(pte))
#endif
/*
* Note: we convert AR_RWX to AR_RX and AR_RW to AR_R by clearing the 2nd bit
in the
diff -r 6827df3f7391 -r 408fcc50fd35 xen/include/asm-ia64/vmmu.h
--- a/xen/include/asm-ia64/vmmu.h Fri Mar 28 15:27:13 2008 -0600
+++ b/xen/include/asm-ia64/vmmu.h Tue Apr 01 09:42:52 2008 -0600
@@ -190,7 +190,7 @@ extern void free_domain_tlb(struct vcpu
extern void free_domain_tlb(struct vcpu *v);
extern thash_data_t * vhpt_lookup(u64 va);
extern unsigned long fetch_code(struct vcpu *vcpu, u64 gip, IA64_BUNDLE
*pbundle);
-extern void emulate_io_inst(struct vcpu *vcpu, u64 padr, u64 ma, u64 pte);
+extern void emulate_io_inst(struct vcpu *vcpu, u64 padr, u64 ma, u64 iot);
extern void emulate_io_update(struct vcpu *vcpu, u64 word, u64 d, u64 d1);
extern int vhpt_enabled(struct vcpu *vcpu, uint64_t vadr, vhpt_ref_t ref);
extern void thash_vhpt_insert(struct vcpu *v, u64 pte, u64 itir, u64 ifa,
diff -r 6827df3f7391 -r 408fcc50fd35 xen/include/public/arch-ia64.h
--- a/xen/include/public/arch-ia64.h Fri Mar 28 15:27:13 2008 -0600
+++ b/xen/include/public/arch-ia64.h Tue Apr 01 09:42:52 2008 -0600
@@ -62,6 +62,10 @@ typedef unsigned long xen_pfn_t;
/* WARNING: before changing this, check that shared_info fits on a page */
#define MAX_VIRT_CPUS 64
+/* IO ports location for PV. */
+#define IO_PORTS_PADDR 0x00000ffffc000000UL
+#define IO_PORTS_SIZE 0x0000000004000000UL
+
#ifndef __ASSEMBLY__
#define __anonymous_union __extension__ union
@@ -75,54 +79,6 @@ typedef unsigned long xen_ulong_t;
#endif
#define INVALID_MFN (~0UL)
-
-#define MEM_G (1UL << 30)
-#define MEM_M (1UL << 20)
-#define MEM_K (1UL << 10)
-
-/* Guest physical address of IO ports space. */
-#define IO_PORTS_PADDR 0x00000ffffc000000UL
-#define IO_PORTS_SIZE 0x0000000004000000UL
-
-#define MMIO_START (3 * MEM_G)
-#define MMIO_SIZE (512 * MEM_M)
-
-#define VGA_IO_START 0xA0000UL
-#define VGA_IO_SIZE 0x20000
-
-#define LEGACY_IO_START (MMIO_START + MMIO_SIZE)
-#define LEGACY_IO_SIZE (64*MEM_M)
-
-#define IO_PAGE_START (LEGACY_IO_START + LEGACY_IO_SIZE)
-#define IO_PAGE_SIZE XEN_PAGE_SIZE
-
-#define STORE_PAGE_START (IO_PAGE_START + IO_PAGE_SIZE)
-#define STORE_PAGE_SIZE XEN_PAGE_SIZE
-
-#define BUFFER_IO_PAGE_START (STORE_PAGE_START + STORE_PAGE_SIZE)
-#define BUFFER_IO_PAGE_SIZE XEN_PAGE_SIZE
-
-#define BUFFER_PIO_PAGE_START (BUFFER_IO_PAGE_START + BUFFER_IO_PAGE_SIZE)
-#define BUFFER_PIO_PAGE_SIZE XEN_PAGE_SIZE
-
-#define IO_SAPIC_START 0xfec00000UL
-#define IO_SAPIC_SIZE 0x100000
-
-#define PIB_START 0xfee00000UL
-#define PIB_SIZE 0x200000
-
-#define GFW_START (4*MEM_G -16*MEM_M)
-#define GFW_SIZE (16*MEM_M)
-
-/* Nvram belongs to GFW memory space */
-#define NVRAM_SIZE (MEM_K * 64)
-#define NVRAM_START (GFW_START + 10 * MEM_M)
-
-#define NVRAM_VALID_SIG 0x4650494e45584948 // "HIXENIPF"
-struct nvram_save_addr {
- unsigned long addr;
- unsigned long signature;
-};
struct pt_fpreg {
union {
@@ -505,6 +461,9 @@ DEFINE_XEN_GUEST_HANDLE(vcpu_guest_conte
/* Internal only: associated with PGC_allocated bit */
#define _ASSIGN_pgc_allocated 3
#define ASSIGN_pgc_allocated (1UL << _ASSIGN_pgc_allocated)
+/* Page is an IO page. */
+#define _ASSIGN_io 4
+#define ASSIGN_io (1UL << _ASSIGN_io)
/* This structure has the same layout of struct ia64_boot_param, defined in
<asm/system.h>. It is redefined here to ease use. */
@@ -640,6 +599,10 @@ DEFINE_XEN_GUEST_HANDLE(pfarg_load_t);
#endif /* __ASSEMBLY__ */
#endif /* XEN */
+#ifndef __ASSEMBLY__
+#include "arch-ia64/hvm/memmap.h"
+#endif
+
#endif /* __HYPERVISOR_IF_IA64_H__ */
/*
diff -r 6827df3f7391 -r 408fcc50fd35 xen/include/public/arch-ia64/hvm/memmap.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/include/public/arch-ia64/hvm/memmap.h Tue Apr 01 09:42:52 2008 -0600
@@ -0,0 +1,88 @@
+/******************************************************************************
+ * memmap.h
+ *
+ * Copyright (c) 2008 Tristan Gingold <tgingold AT free fr>
+ *
+ * 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
+ *
+ */
+
+#ifndef __XEN_PUBLIC_HVM_MEMMAP_IA64_H__
+#define __XEN_PUBLIC_HVM_MEMMAP_IA64_H__
+
+#define MEM_G (1UL << 30)
+#define MEM_M (1UL << 20)
+#define MEM_K (1UL << 10)
+
+/* Guest physical address of IO ports space. */
+#define MMIO_START (3 * MEM_G)
+#define MMIO_SIZE (512 * MEM_M)
+
+#define VGA_IO_START 0xA0000UL
+#define VGA_IO_SIZE 0x20000
+
+#define LEGACY_IO_START (MMIO_START + MMIO_SIZE)
+#define LEGACY_IO_SIZE (64 * MEM_M)
+
+#define IO_PAGE_START (LEGACY_IO_START + LEGACY_IO_SIZE)
+#define IO_PAGE_SIZE XEN_PAGE_SIZE
+
+#define STORE_PAGE_START (IO_PAGE_START + IO_PAGE_SIZE)
+#define STORE_PAGE_SIZE XEN_PAGE_SIZE
+
+#define BUFFER_IO_PAGE_START (STORE_PAGE_START + STORE_PAGE_SIZE)
+#define BUFFER_IO_PAGE_SIZE XEN_PAGE_SIZE
+
+#define BUFFER_PIO_PAGE_START (BUFFER_IO_PAGE_START + BUFFER_IO_PAGE_SIZE)
+#define BUFFER_PIO_PAGE_SIZE XEN_PAGE_SIZE
+
+#define IO_SAPIC_START 0xfec00000UL
+#define IO_SAPIC_SIZE 0x100000
+
+#define PIB_START 0xfee00000UL
+#define PIB_SIZE 0x200000
+
+#define GFW_START (4 * MEM_G - 16 * MEM_M)
+#define GFW_SIZE (16 * MEM_M)
+
+/* domVTI */
+#define GPFN_FRAME_BUFFER 0x1 /* VGA framebuffer */
+#define GPFN_LOW_MMIO 0x2 /* Low MMIO range */
+#define GPFN_PIB 0x3 /* PIB base */
+#define GPFN_IOSAPIC 0x4 /* IOSAPIC base */
+#define GPFN_LEGACY_IO 0x5 /* Legacy I/O base */
+#define GPFN_HIGH_MMIO 0x6 /* High MMIO range */
+
+/* Nvram belongs to GFW memory space */
+#define NVRAM_SIZE (MEM_K * 64)
+#define NVRAM_START (GFW_START + 10 * MEM_M)
+
+#define NVRAM_VALID_SIG 0x4650494e45584948 /* "HIXENIPF" */
+struct nvram_save_addr {
+ unsigned long addr;
+ unsigned long signature;
+};
+
+#endif /* __XEN_PUBLIC_HVM_MEMMAP_IA64_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
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