From d04477b6028d4c10e880553e041705ca699c669f Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Wed, 14 Mar 2007 16:36:04 +0000 Subject: [PATCH] [XEN] 32on64 kexec: Make the compat page table cover the first 4G of physical memory. This gives the guest kernel more flexibility on where it places the control page. Signed-off-by: Ian Campbell --- xen/arch/x86/x86_64/compat_kexec.S | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/xen/arch/x86/x86_64/compat_kexec.S b/xen/arch/x86/x86_64/compat_kexec.S index c06db6fc7e..cc6f3d6fce 100644 --- a/xen/arch/x86/x86_64/compat_kexec.S +++ b/xen/arch/x86/x86_64/compat_kexec.S @@ -103,13 +103,13 @@ compat_page_list: /* * These compat page tables contain an identity mapping of the - * first 1G of the physical address space. + * first 4G of the physical address space. */ compat_pg_table: .long compat_pg_table_l2 + 0*PAGE_SIZE + 0x01 - __PAGE_OFFSET, 0 - .long 0, 0 - .long 0, 0 - .long 0, 0 + .long compat_pg_table_l2 + 1*PAGE_SIZE + 0x01 - __PAGE_OFFSET, 0 + .long compat_pg_table_l2 + 2*PAGE_SIZE + 0x01 - __PAGE_OFFSET, 0 + .long compat_pg_table_l2 + 3*PAGE_SIZE + 0x01 - __PAGE_OFFSET, 0 .align 4096,0 @@ -123,4 +123,7 @@ compat_pg_table_l2: .endif .endm - identmap + identmap 0x00000000 + identmap 0x40000000 + identmap 0x80000000 + identmap 0xc0000000 -- 2.30.2