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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Add support to domain builders for loading kernels with physical addresses in the elf paddr and entry fields.
# HG changeset patch
# User cl349@xxxxxxxxxxxxxxxxxxxx
# Node ID d0c7cc0afd15f2293d25cc538ac6bfcc307f3c4b
# Parent 891e0d1cf4abfac1b3ce1210f22032dad205d46d
Add support to domain builders for loading kernels with physical addresses in
the elf paddr and entry fields.
Add a new __xen_guest header field to distinguish between kernels with
the previous use of the paddr field and the new use.
Add a new __xen_guest header field to control the kernel entry point,
since the elf header entry field now points to a physical address.
This header field is also useful for supporting alternative entry
points in kernel images which run both on xen and native.
Also add a kernel config option to control whether the resulting kernel
should include compatibility code to run on Xen 3.0.2 or whether such
code such be left out, resulting in a kernel which will only run on
newer Xen versions. Default to having compatibility enabled.
Kernels built with the new use of the elf header fields would otherwise
not work on Xen versions prior to this changeset.
Signed-off-by: Christian Limpach <Christian.Limpach@xxxxxxxxxxxx>
---
buildconfigs/linux-defconfig_xen0_x86_32 | 10 +-
buildconfigs/linux-defconfig_xen0_x86_64 | 10 +-
buildconfigs/linux-defconfig_xenU_x86_32 | 19 ++-
buildconfigs/linux-defconfig_xenU_x86_64 | 10 +-
buildconfigs/linux-defconfig_xen_x86_32 | 12 +-
buildconfigs/linux-defconfig_xen_x86_64 | 12 +-
linux-2.6-xen-sparse/arch/i386/kernel/head-xen.S | 10 ++
linux-2.6-xen-sparse/arch/x86_64/kernel/head-xen.S | 16 ++-
linux-2.6-xen-sparse/drivers/xen/Kconfig | 16 +++
linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/page.h | 3
linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/page.h | 2
tools/libxc/xc_load_elf.c | 42 +++++---
tools/libxc/xg_private.h | 5 -
xen/common/elf.c | 58 +++++++-----
xen/include/xen/sched.h | 1
15 files changed, 153 insertions(+), 73 deletions(-)
diff -r 891e0d1cf4ab -r d0c7cc0afd15 buildconfigs/linux-defconfig_xen0_x86_32
--- a/buildconfigs/linux-defconfig_xen0_x86_32 Thu May 11 15:51:56 2006 +0100
+++ b/buildconfigs/linux-defconfig_xen0_x86_32 Thu May 11 17:30:50 2006 +0100
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.16-xen0
-# Sat Apr 8 11:34:07 2006
+# Linux kernel version: 2.6.16.13-xen0
+# Thu May 11 17:06:31 2006
#
CONFIG_X86_32=y
CONFIG_SEMAPHORE_SLEEPERS=y
@@ -1309,7 +1309,7 @@ CONFIG_CRYPTO_CRC32C=m
#
# CONFIG_CRYPTO_DEV_PADLOCK is not set
CONFIG_XEN=y
-CONFIG_XEN_INTERFACE_VERSION=0x00030101
+CONFIG_XEN_INTERFACE_VERSION=0x00030202
#
# XEN
@@ -1330,10 +1330,12 @@ CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_NETDEV_FRONTEND=y
# CONFIG_XEN_BLKDEV_TAP is not set
-# CONFIG_XEN_TPMDEV_FRONTEND is not set
CONFIG_XEN_SCRUB_PAGES=y
CONFIG_XEN_DISABLE_SERIAL=y
CONFIG_XEN_SYSFS=y
+CONFIG_XEN_COMPAT_030002_AND_LATER=y
+# CONFIG_XEN_COMPAT_LATEST_ONLY is not set
+CONFIG_XEN_COMPAT_030002=y
CONFIG_HAVE_ARCH_ALLOC_SKB=y
CONFIG_HAVE_ARCH_DEV_ALLOC_SKB=y
CONFIG_NO_IDLE_HZ=y
diff -r 891e0d1cf4ab -r d0c7cc0afd15 buildconfigs/linux-defconfig_xen0_x86_64
--- a/buildconfigs/linux-defconfig_xen0_x86_64 Thu May 11 15:51:56 2006 +0100
+++ b/buildconfigs/linux-defconfig_xen0_x86_64 Thu May 11 17:30:50 2006 +0100
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.16-xen0
-# Thu Apr 13 14:58:29 2006
+# Linux kernel version: 2.6.16.13-xen0
+# Thu May 11 17:17:19 2006
#
CONFIG_X86_64=y
CONFIG_64BIT=y
@@ -1250,7 +1250,7 @@ CONFIG_CRYPTO_CRC32C=m
# Hardware crypto devices
#
CONFIG_XEN=y
-CONFIG_XEN_INTERFACE_VERSION=0x00030101
+CONFIG_XEN_INTERFACE_VERSION=0x00030202
#
# XEN
@@ -1271,10 +1271,12 @@ CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_NETDEV_FRONTEND=y
# CONFIG_XEN_BLKDEV_TAP is not set
-# CONFIG_XEN_TPMDEV_FRONTEND is not set
CONFIG_XEN_SCRUB_PAGES=y
CONFIG_XEN_DISABLE_SERIAL=y
CONFIG_XEN_SYSFS=y
+CONFIG_XEN_COMPAT_030002_AND_LATER=y
+# CONFIG_XEN_COMPAT_LATEST_ONLY is not set
+CONFIG_XEN_COMPAT_030002=y
CONFIG_HAVE_ARCH_ALLOC_SKB=y
CONFIG_HAVE_ARCH_DEV_ALLOC_SKB=y
CONFIG_NO_IDLE_HZ=y
diff -r 891e0d1cf4ab -r d0c7cc0afd15 buildconfigs/linux-defconfig_xenU_x86_32
--- a/buildconfigs/linux-defconfig_xenU_x86_32 Thu May 11 15:51:56 2006 +0100
+++ b/buildconfigs/linux-defconfig_xenU_x86_32 Thu May 11 17:30:50 2006 +0100
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.16-rc3-xen0
-# Thu Feb 16 22:53:43 2006
+# Linux kernel version: 2.6.16.13-xenU
+# Thu May 11 17:08:12 2006
#
CONFIG_X86_32=y
CONFIG_SEMAPHORE_SLEEPERS=y
@@ -617,11 +617,7 @@ CONFIG_DUMMY_CONSOLE=y
#
#
-# SN Devices
-#
-
-#
-# EDAC - error detection and reporting (RAS)
+# EDAC - error detection and reporting (RAS) (EXPERIMENTAL)
#
# CONFIG_EDAC is not set
@@ -852,7 +848,7 @@ CONFIG_CRYPTO_CRC32C=m
#
# CONFIG_CRYPTO_DEV_PADLOCK is not set
CONFIG_XEN=y
-CONFIG_NO_IDLE_HZ=y
+CONFIG_XEN_INTERFACE_VERSION=0x00030202
#
# XEN
@@ -862,12 +858,15 @@ CONFIG_XEN_UNPRIVILEGED_GUEST=y
# CONFIG_XEN_BACKEND is not set
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_NETDEV_FRONTEND=y
-# CONFIG_XEN_TPMDEV_FRONTEND is not set
CONFIG_XEN_SCRUB_PAGES=y
CONFIG_XEN_DISABLE_SERIAL=y
CONFIG_XEN_SYSFS=y
+CONFIG_XEN_COMPAT_030002_AND_LATER=y
+# CONFIG_XEN_COMPAT_LATEST_ONLY is not set
+CONFIG_XEN_COMPAT_030002=y
CONFIG_HAVE_ARCH_ALLOC_SKB=y
CONFIG_HAVE_ARCH_DEV_ALLOC_SKB=y
+CONFIG_NO_IDLE_HZ=y
#
# Library routines
@@ -883,4 +882,6 @@ CONFIG_X86_SMP=y
CONFIG_X86_SMP=y
CONFIG_X86_BIOS_REBOOT=y
CONFIG_X86_TRAMPOLINE=y
+CONFIG_X86_NO_TSS=y
+CONFIG_X86_NO_IDT=y
CONFIG_KTIME_SCALAR=y
diff -r 891e0d1cf4ab -r d0c7cc0afd15 buildconfigs/linux-defconfig_xenU_x86_64
--- a/buildconfigs/linux-defconfig_xenU_x86_64 Thu May 11 15:51:56 2006 +0100
+++ b/buildconfigs/linux-defconfig_xenU_x86_64 Thu May 11 17:30:50 2006 +0100
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.16-xenU
-# Thu Apr 13 14:59:16 2006
+# Linux kernel version: 2.6.16.13-xenU
+# Thu May 11 17:17:57 2006
#
CONFIG_X86_64=y
CONFIG_64BIT=y
@@ -1135,7 +1135,7 @@ CONFIG_CRYPTO_CRC32C=m
# Hardware crypto devices
#
CONFIG_XEN=y
-CONFIG_XEN_INTERFACE_VERSION=0x00030101
+CONFIG_XEN_INTERFACE_VERSION=0x00030202
#
# XEN
@@ -1145,10 +1145,12 @@ CONFIG_XEN_UNPRIVILEGED_GUEST=y
# CONFIG_XEN_BACKEND is not set
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_NETDEV_FRONTEND=y
-# CONFIG_XEN_TPMDEV_FRONTEND is not set
CONFIG_XEN_SCRUB_PAGES=y
CONFIG_XEN_DISABLE_SERIAL=y
CONFIG_XEN_SYSFS=y
+CONFIG_XEN_COMPAT_030002_AND_LATER=y
+# CONFIG_XEN_COMPAT_LATEST_ONLY is not set
+CONFIG_XEN_COMPAT_030002=y
CONFIG_HAVE_ARCH_ALLOC_SKB=y
CONFIG_HAVE_ARCH_DEV_ALLOC_SKB=y
CONFIG_NO_IDLE_HZ=y
diff -r 891e0d1cf4ab -r d0c7cc0afd15 buildconfigs/linux-defconfig_xen_x86_32
--- a/buildconfigs/linux-defconfig_xen_x86_32 Thu May 11 15:51:56 2006 +0100
+++ b/buildconfigs/linux-defconfig_xen_x86_32 Thu May 11 17:30:50 2006 +0100
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.16-xen
-# Thu Apr 20 17:07:18 2006
+# Linux kernel version: 2.6.16.13-xen
+# Thu May 11 17:11:00 2006
#
CONFIG_X86_32=y
CONFIG_SEMAPHORE_SLEEPERS=y
@@ -888,7 +888,7 @@ CONFIG_MTD_NAND_DISKONCHIP=m
# CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADVANCED is not set
CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS=0
CONFIG_MTD_NAND_DISKONCHIP_BBTWRITE=y
-CONFIG_MTD_NAND_NANDSIM=y
+CONFIG_MTD_NAND_NANDSIM=m
#
# OneNAND Flash Device Drivers
@@ -3009,7 +3009,7 @@ CONFIG_CRYPTO_TEST=m
#
# CONFIG_CRYPTO_DEV_PADLOCK is not set
CONFIG_XEN=y
-CONFIG_XEN_INTERFACE_VERSION=0x00030101
+CONFIG_XEN_INTERFACE_VERSION=0x00030202
#
# XEN
@@ -3030,10 +3030,12 @@ CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_NETDEV_FRONTEND=y
# CONFIG_XEN_BLKDEV_TAP is not set
-CONFIG_XEN_TPMDEV_FRONTEND=m
CONFIG_XEN_SCRUB_PAGES=y
CONFIG_XEN_DISABLE_SERIAL=y
CONFIG_XEN_SYSFS=y
+CONFIG_XEN_COMPAT_030002_AND_LATER=y
+# CONFIG_XEN_COMPAT_LATEST_ONLY is not set
+CONFIG_XEN_COMPAT_030002=y
CONFIG_HAVE_ARCH_ALLOC_SKB=y
CONFIG_HAVE_ARCH_DEV_ALLOC_SKB=y
CONFIG_NO_IDLE_HZ=y
diff -r 891e0d1cf4ab -r d0c7cc0afd15 buildconfigs/linux-defconfig_xen_x86_64
--- a/buildconfigs/linux-defconfig_xen_x86_64 Thu May 11 15:51:56 2006 +0100
+++ b/buildconfigs/linux-defconfig_xen_x86_64 Thu May 11 17:30:50 2006 +0100
@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.16-xen
-# Thu Apr 20 17:05:48 2006
+# Linux kernel version: 2.6.16.13-xen
+# Thu May 11 17:18:58 2006
#
CONFIG_X86_64=y
CONFIG_64BIT=y
@@ -840,7 +840,7 @@ CONFIG_MTD_NAND_DISKONCHIP=m
# CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADVANCED is not set
CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS=0
CONFIG_MTD_NAND_DISKONCHIP_BBTWRITE=y
-CONFIG_MTD_NAND_NANDSIM=y
+CONFIG_MTD_NAND_NANDSIM=m
#
# OneNAND Flash Device Drivers
@@ -2841,7 +2841,7 @@ CONFIG_CRYPTO_TEST=m
# Hardware crypto devices
#
CONFIG_XEN=y
-CONFIG_XEN_INTERFACE_VERSION=0x00030101
+CONFIG_XEN_INTERFACE_VERSION=0x00030202
#
# XEN
@@ -2863,10 +2863,12 @@ CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_BLKDEV_FRONTEND=y
CONFIG_XEN_NETDEV_FRONTEND=y
# CONFIG_XEN_BLKDEV_TAP is not set
-CONFIG_XEN_TPMDEV_FRONTEND=m
CONFIG_XEN_SCRUB_PAGES=y
CONFIG_XEN_DISABLE_SERIAL=y
CONFIG_XEN_SYSFS=y
+CONFIG_XEN_COMPAT_030002_AND_LATER=y
+# CONFIG_XEN_COMPAT_LATEST_ONLY is not set
+CONFIG_XEN_COMPAT_030002=y
CONFIG_HAVE_ARCH_ALLOC_SKB=y
CONFIG_HAVE_ARCH_DEV_ALLOC_SKB=y
CONFIG_NO_IDLE_HZ=y
diff -r 891e0d1cf4ab -r d0c7cc0afd15
linux-2.6-xen-sparse/arch/i386/kernel/head-xen.S
--- a/linux-2.6-xen-sparse/arch/i386/kernel/head-xen.S Thu May 11 15:51:56
2006 +0100
+++ b/linux-2.6-xen-sparse/arch/i386/kernel/head-xen.S Thu May 11 17:30:50
2006 +0100
@@ -23,6 +23,8 @@
#define X86_CAPABILITY new_cpu_data+CPUINFO_x86_capability
#define X86_VENDOR_ID new_cpu_data+CPUINFO_x86_vendor_id
+#define VIRT_ENTRY_OFFSET 0x0
+.org VIRT_ENTRY_OFFSET
ENTRY(startup_32)
movl %esi,xen_start_info
cld
@@ -155,6 +157,14 @@ ENTRY(cpu_gdt_table)
.ascii ",XEN_VER=xen-3.0"
.ascii ",VIRT_BASE=0x"
utoa __PAGE_OFFSET
+#ifdef CONFIG_XEN_COMPAT_030002
+ .ascii ",ELF_PADDR_OFFSET=0x"
+ utoa __PAGE_OFFSET
+#else
+ .ascii ",ELF_PADDR_OFFSET=0x0"
+#endif /* !CONFIG_XEN_COMPAT_030002 */
+ .ascii ",VIRT_ENTRY=0x"
+ utoa (__PAGE_OFFSET + __PHYSICAL_START + VIRT_ENTRY_OFFSET)
.ascii ",HYPERCALL_PAGE=0x"
utoa ((__PHYSICAL_START+HYPERCALL_PAGE_OFFSET)>>PAGE_SHIFT)
.ascii ",FEATURES=writable_page_tables"
diff -r 891e0d1cf4ab -r d0c7cc0afd15
linux-2.6-xen-sparse/arch/x86_64/kernel/head-xen.S
--- a/linux-2.6-xen-sparse/arch/x86_64/kernel/head-xen.S Thu May 11
15:51:56 2006 +0100
+++ b/linux-2.6-xen-sparse/arch/x86_64/kernel/head-xen.S Thu May 11
17:30:50 2006 +0100
@@ -24,6 +24,8 @@
.text
.code64
+#define VIRT_ENTRY_OFFSET 0x0
+.org VIRT_ENTRY_OFFSET
.globl startup_64
startup_64:
ENTRY(_start)
@@ -146,8 +148,18 @@ gdt_end:
.section __xen_guest
.ascii "GUEST_OS=linux,GUEST_VER=2.6"
.ascii ",XEN_VER=xen-3.0"
- .ascii ",VIRT_BASE=0x"; utoh __START_KERNEL_map
- .ascii ",HYPERCALL_PAGE=0x"; utoh (phys_hypercall_page >> PAGE_SHIFT)
+ .ascii ",VIRT_BASE=0x"
+ utoh __START_KERNEL_map
+#ifdef CONFIG_XEN_COMPAT_030002
+ .ascii ",ELF_PADDR_OFFSET=0x"
+ utoh __START_KERNEL_map
+#else
+ .ascii ",ELF_PADDR_OFFSET=0x0"
+#endif /* !CONFIG_XEN_COMPAT_030002 */
+ .ascii ",VIRT_ENTRY=0x"
+ utoh (__START_KERNEL_map + __PHYSICAL_START + VIRT_ENTRY_OFFSET)
+ .ascii ",HYPERCALL_PAGE=0x"
+ utoh (phys_hypercall_page >> PAGE_SHIFT)
.ascii ",FEATURES=writable_page_tables"
.ascii "|writable_descriptor_tables"
.ascii "|auto_translated_physmap"
diff -r 891e0d1cf4ab -r d0c7cc0afd15 linux-2.6-xen-sparse/drivers/xen/Kconfig
--- a/linux-2.6-xen-sparse/drivers/xen/Kconfig Thu May 11 15:51:56 2006 +0100
+++ b/linux-2.6-xen-sparse/drivers/xen/Kconfig Thu May 11 17:30:50 2006 +0100
@@ -198,6 +198,22 @@ config XEN_SYSFS
help
Xen hypervisor attributes will show up under /sys/hypervisor/.
+choice
+ prompt "Xen version compatibility"
+ default XEN_COMPAT_030002_AND_LATER
+
+ config XEN_COMPAT_030002_AND_LATER
+ bool "3.0.2 and later"
+
+ config XEN_COMPAT_LATEST_ONLY
+ bool "no compatibility code"
+
+endchoice
+
+config XEN_COMPAT_030002
+ bool
+ default XEN_COMPAT_030002_AND_LATER
+
endmenu
config HAVE_ARCH_ALLOC_SKB
diff -r 891e0d1cf4ab -r d0c7cc0afd15
linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/page.h
--- a/linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/page.h Thu May 11
15:51:56 2006 +0100
+++ b/linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/page.h Thu May 11
17:30:50 2006 +0100
@@ -289,9 +289,10 @@ extern int page_is_ram(unsigned long pag
#endif
#define __KERNEL_START (__PAGE_OFFSET + __PHYSICAL_START)
+#ifdef CONFIG_XEN_COMPAT_030002
#undef LOAD_OFFSET
#define LOAD_OFFSET 0
-
+#endif /* CONFIG_XEN_COMPAT_030002 */
#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
#define VMALLOC_RESERVE ((unsigned long)__VMALLOC_RESERVE)
diff -r 891e0d1cf4ab -r d0c7cc0afd15
linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/page.h
--- a/linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/page.h Thu May
11 15:51:56 2006 +0100
+++ b/linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/page.h Thu May
11 17:30:50 2006 +0100
@@ -260,8 +260,10 @@ static inline pgd_t __pgd(unsigned long
#define __PAGE_OFFSET 0xffff880000000000
#endif /* !__ASSEMBLY__ */
+#ifdef CONFIG_XEN_COMPAT_030002
#undef LOAD_OFFSET
#define LOAD_OFFSET 0
+#endif /* CONFIG_XEN_COMPAT_030002 */
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
diff -r 891e0d1cf4ab -r d0c7cc0afd15 tools/libxc/xc_load_elf.c
--- a/tools/libxc/xc_load_elf.c Thu May 11 15:51:56 2006 +0100
+++ b/tools/libxc/xc_load_elf.c Thu May 11 17:30:50 2006 +0100
@@ -58,7 +58,7 @@ static int parseelfimage(const char *ima
Elf_Ehdr *ehdr = (Elf_Ehdr *)image;
Elf_Phdr *phdr;
Elf_Shdr *shdr;
- unsigned long kernstart = ~0UL, kernend=0UL;
+ unsigned long kernstart = ~0UL, kernend=0UL, vaddr, virt_base;
const char *shstrtab;
char *guestinfo=NULL, *p;
int h;
@@ -148,35 +148,47 @@ static int parseelfimage(const char *ima
dsi->xen_guest_string = guestinfo;
+ virt_base = 0;
+ if ( (p = strstr(guestinfo, "VIRT_BASE=")) != NULL )
+ virt_base = strtoul(p+10, &p, 0);
+ dsi->elf_paddr_offset = virt_base;
+ if ( (p = strstr(guestinfo, "ELF_PADDR_OFFSET=")) != NULL )
+ dsi->elf_paddr_offset = strtoul(p+17, &p, 0);
+
for ( h = 0; h < ehdr->e_phnum; h++ )
{
phdr = (Elf_Phdr *)(image + ehdr->e_phoff + (h*ehdr->e_phentsize));
if ( !is_loadable_phdr(phdr) )
continue;
- if ( phdr->p_paddr < kernstart )
- kernstart = phdr->p_paddr;
- if ( (phdr->p_paddr + phdr->p_memsz) > kernend )
- kernend = phdr->p_paddr + phdr->p_memsz;
- }
+ vaddr = phdr->p_paddr - dsi->elf_paddr_offset + virt_base;
+ if ( vaddr < kernstart )
+ kernstart = vaddr;
+ if ( (vaddr + phdr->p_memsz) > kernend )
+ kernend = vaddr + phdr->p_memsz;
+ }
+
+ if ( virt_base )
+ dsi->v_start = virt_base;
+ else
+ dsi->v_start = kernstart;
+
+ dsi->v_kernentry = ehdr->e_entry;
+ if ( (p = strstr(guestinfo, "VIRT_ENTRY=")) != NULL )
+ dsi->v_kernentry = strtoul(p+11, &p, 0);
if ( (kernstart > kernend) ||
- (ehdr->e_entry < kernstart) ||
- (ehdr->e_entry > kernend) )
+ (dsi->v_kernentry < kernstart) ||
+ (dsi->v_kernentry > kernend) )
{
ERROR("Malformed ELF image.");
return -EINVAL;
}
-
- dsi->v_start = kernstart;
- if ( (p = strstr(guestinfo, "VIRT_BASE=")) != NULL )
- dsi->v_start = strtoul(p+10, &p, 0);
if ( (p = strstr(guestinfo, "BSD_SYMTAB")) != NULL )
dsi->load_symtab = 1;
dsi->v_kernstart = kernstart;
dsi->v_kernend = kernend;
- dsi->v_kernentry = ehdr->e_entry;
dsi->v_end = dsi->v_kernend;
loadelfsymtab(image, 0, 0, NULL, dsi);
@@ -204,7 +216,7 @@ loadelfimage(
for ( done = 0; done < phdr->p_filesz; done += chunksz )
{
- pa = (phdr->p_paddr + done) - dsi->v_start;
+ pa = (phdr->p_paddr + done) - dsi->elf_paddr_offset;
va = xc_map_foreign_range(
xch, dom, PAGE_SIZE, PROT_WRITE, parray[pa>>PAGE_SHIFT]);
chunksz = phdr->p_filesz - done;
@@ -217,7 +229,7 @@ loadelfimage(
for ( ; done < phdr->p_memsz; done += chunksz )
{
- pa = (phdr->p_paddr + done) - dsi->v_start;
+ pa = (phdr->p_paddr + done) - dsi->elf_paddr_offset;
va = xc_map_foreign_range(
xch, dom, PAGE_SIZE, PROT_WRITE, parray[pa>>PAGE_SHIFT]);
chunksz = phdr->p_memsz - done;
diff -r 891e0d1cf4ab -r d0c7cc0afd15 tools/libxc/xg_private.h
--- a/tools/libxc/xg_private.h Thu May 11 15:51:56 2006 +0100
+++ b/tools/libxc/xg_private.h Thu May 11 17:30:50 2006 +0100
@@ -136,8 +136,11 @@ struct domain_setup_info
unsigned long v_kernend;
unsigned long v_kernentry;
+ unsigned long elf_paddr_offset;
+
+ unsigned int pae_kernel;
+
unsigned int load_symtab;
- unsigned int pae_kernel;
unsigned long symtab_addr;
unsigned long symtab_len;
diff -r 891e0d1cf4ab -r d0c7cc0afd15 xen/common/elf.c
--- a/xen/common/elf.c Thu May 11 15:51:56 2006 +0100
+++ b/xen/common/elf.c Thu May 11 17:30:50 2006 +0100
@@ -23,7 +23,7 @@ int parseelfimage(struct domain_setup_in
Elf_Ehdr *ehdr = (Elf_Ehdr *)dsi->image_addr;
Elf_Phdr *phdr;
Elf_Shdr *shdr;
- unsigned long kernstart = ~0UL, kernend=0UL;
+ unsigned long kernstart = ~0UL, kernend=0UL, vaddr, virt_base;
char *shstrtab, *guestinfo=NULL, *p;
char *elfbase = (char *)dsi->image_addr;
int h;
@@ -81,39 +81,50 @@ int parseelfimage(struct domain_setup_in
dsi->xen_section_string = guestinfo;
- for ( h = 0; h < ehdr->e_phnum; h++ )
+ if ( guestinfo == NULL )
+ guestinfo = "";
+
+ virt_base = 0;
+ if ( (p = strstr(guestinfo, "VIRT_BASE=")) != NULL )
+ virt_base = simple_strtoul(p+10, &p, 0);
+ dsi->elf_paddr_offset = virt_base;
+ if ( (p = strstr(guestinfo, "ELF_PADDR_OFFSET=")) != NULL )
+ dsi->elf_paddr_offset = simple_strtoul(p+17, &p, 0);
+
+ for ( h = 0; h < ehdr->e_phnum; h++ )
{
phdr = (Elf_Phdr *)(elfbase + ehdr->e_phoff + (h*ehdr->e_phentsize));
if ( !is_loadable_phdr(phdr) )
continue;
- if ( phdr->p_paddr < kernstart )
- kernstart = phdr->p_paddr;
- if ( (phdr->p_paddr + phdr->p_memsz) > kernend )
- kernend = phdr->p_paddr + phdr->p_memsz;
- }
+ vaddr = phdr->p_paddr - dsi->elf_paddr_offset + virt_base;
+ if ( vaddr < kernstart )
+ kernstart = vaddr;
+ if ( (vaddr + phdr->p_memsz) > kernend )
+ kernend = vaddr + phdr->p_memsz;
+ }
+
+ if ( virt_base )
+ dsi->v_start = virt_base;
+ else
+ dsi->v_start = kernstart;
+
+ dsi->v_kernentry = ehdr->e_entry;
+ if ( (p = strstr(guestinfo, "VIRT_ENTRY=")) != NULL )
+ dsi->v_kernentry = simple_strtoul(p+11, &p, 0);
if ( (kernstart > kernend) ||
- (ehdr->e_entry < kernstart) ||
- (ehdr->e_entry > kernend) )
+ (dsi->v_kernentry < kernstart) ||
+ (dsi->v_kernentry > kernend) )
{
printk("Malformed ELF image.\n");
return -EINVAL;
}
- dsi->v_start = kernstart;
-
- if ( guestinfo != NULL )
- {
- if ( (p = strstr(guestinfo, "VIRT_BASE=")) != NULL )
- dsi->v_start = simple_strtoul(p+10, &p, 0);
-
- if ( (p = strstr(guestinfo, "BSD_SYMTAB")) != NULL )
+ if ( (p = strstr(guestinfo, "BSD_SYMTAB")) != NULL )
dsi->load_symtab = 1;
- }
dsi->v_kernstart = kernstart;
dsi->v_kernend = kernend;
- dsi->v_kernentry = ehdr->e_entry;
dsi->v_end = dsi->v_kernend;
loadelfsymtab(dsi, 0);
@@ -126,18 +137,19 @@ int loadelfimage(struct domain_setup_inf
char *elfbase = (char *)dsi->image_addr;
Elf_Ehdr *ehdr = (Elf_Ehdr *)dsi->image_addr;
Elf_Phdr *phdr;
+ unsigned long vaddr;
int h;
- for ( h = 0; h < ehdr->e_phnum; h++ )
+ for ( h = 0; h < ehdr->e_phnum; h++ )
{
phdr = (Elf_Phdr *)(elfbase + ehdr->e_phoff + (h*ehdr->e_phentsize));
if ( !is_loadable_phdr(phdr) )
continue;
+ vaddr = phdr->p_paddr - dsi->elf_paddr_offset + dsi->v_start;
if ( phdr->p_filesz != 0 )
- memcpy((char *)phdr->p_paddr, elfbase + phdr->p_offset,
- phdr->p_filesz);
+ memcpy((char *)vaddr, elfbase + phdr->p_offset, phdr->p_filesz);
if ( phdr->p_memsz > phdr->p_filesz )
- memset((char *)phdr->p_paddr + phdr->p_filesz, 0,
+ memset((char *)vaddr + phdr->p_filesz, 0,
phdr->p_memsz - phdr->p_filesz);
}
diff -r 891e0d1cf4ab -r d0c7cc0afd15 xen/include/xen/sched.h
--- a/xen/include/xen/sched.h Thu May 11 15:51:56 2006 +0100
+++ b/xen/include/xen/sched.h Thu May 11 17:30:50 2006 +0100
@@ -173,6 +173,7 @@ struct domain_setup_info
unsigned long v_kernend;
unsigned long v_kernentry;
/* Initialised by loader: Private. */
+ unsigned long elf_paddr_offset;
unsigned int load_symtab;
unsigned long symtab_addr;
unsigned long symtab_len;
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