From 56c4bfb3f07f3107894c00281276aea4f5e8834d Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Tue, 6 Aug 2013 12:37:11 +0200 Subject: dump: rebase from host-private RAMBlock offsets to guest-physical addresses RAMBlock.offset --> GuestPhysBlock.target_start RAMBlock.offset + RAMBlock.length --> GuestPhysBlock.target_end RAMBlock.length --> GuestPhysBlock.target_end - GuestPhysBlock.target_start "GuestPhysBlock.host_addr" is only used when writing the dump contents. This patch enables "crash" to work with the vmcore by rebasing the vmcore from the left side of the following diagram to the right side: host-private offset relative to ram_addr RAMBlock guest-visible paddrs 0 +-------------------+.....+-------------------+ 0 | ^ | | ^ | | 640 KB | | 640 KB | | v | | v | 0x0000a0000 +-------------------+.....+-------------------+ 0x0000a0000 | ^ | |XXXXXXXXXXXXXXXXXXX| | 384 KB | |XXXXXXXXXXXXXXXXXXX| | v | |XXXXXXXXXXXXXXXXXXX| 0x000100000 +-------------------+.....+-------------------+ 0x000100000 | ^ | | ^ | | 3583 MB | | 3583 MB | | v | | v | 0x0e0000000 +-------------------+.....+-------------------+ 0x0e0000000 | ^ |. |XXXXXXXXXXXXXXXXXXX| | above_4g_mem_size | . |XXXX PCI hole XXXXX| | v | . |XXXX XXXXX| ram_size +-------------------+ . |XXXX 512 MB XXXXX| . .|XXXXXXXXXXXXXXXXXXX| . +-------------------+ 0x100000000 . | ^ | . | above_4g_mem_size | .| v | +-------------------+ ram_size + 512 MB Related RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=981582 Signed-off-by: Laszlo Ersek Signed-off-by: Luiz Capitulino --- memory_mapping.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) (limited to 'memory_mapping.c') diff --git a/memory_mapping.c b/memory_mapping.c index 876f5aa7f5..eeeeb44026 100644 --- a/memory_mapping.c +++ b/memory_mapping.c @@ -279,10 +279,12 @@ static CPUState *find_paging_enabled_cpu(CPUState *start_cpu) return NULL; } -void qemu_get_guest_memory_mapping(MemoryMappingList *list, Error **errp) +void qemu_get_guest_memory_mapping(MemoryMappingList *list, + const GuestPhysBlockList *guest_phys_blocks, + Error **errp) { CPUState *cpu, *first_paging_enabled_cpu; - RAMBlock *block; + GuestPhysBlock *block; ram_addr_t offset, length; first_paging_enabled_cpu = find_paging_enabled_cpu(first_cpu); @@ -302,19 +304,21 @@ void qemu_get_guest_memory_mapping(MemoryMappingList *list, Error **errp) * If the guest doesn't use paging, the virtual address is equal to physical * address. */ - QTAILQ_FOREACH(block, &ram_list.blocks, next) { - offset = block->offset; - length = block->length; + QTAILQ_FOREACH(block, &guest_phys_blocks->head, next) { + offset = block->target_start; + length = block->target_end - block->target_start; create_new_memory_mapping(list, offset, offset, length); } } -void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list) +void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list, + const GuestPhysBlockList *guest_phys_blocks) { - RAMBlock *block; + GuestPhysBlock *block; - QTAILQ_FOREACH(block, &ram_list.blocks, next) { - create_new_memory_mapping(list, block->offset, 0, block->length); + QTAILQ_FOREACH(block, &guest_phys_blocks->head, next) { + create_new_memory_mapping(list, block->target_start, 0, + block->target_end - block->target_start); } } -- cgit v1.2.3