14.02.2016 14:24, Wink Saville пишет:
> I'm using multiboot2 and I see a zero field in grub/include/multiboot2.h:
>
> struct multiboot_mmap_entry
> {
> multiboot_uint64_t addr;
> multiboot_uint64_t len;
> #define MULTIBOOT_MEMORY_AVAILABLE 1
> #define MULTIBOOT_MEMORY_RESERVED 2
> #define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3
> #define MULTIBOOT_MEMORY_NVS 4
> #define MULTIBOOT_MEMORY_BADRAM 5
> multiboot_uint32_t type;
> multiboot_uint32_t zero;
> } GRUB_PACKED;
> typedef struct multiboot_mmap_entry multiboot_memory_map_t;
>
OK, I pushed fix (although documentation also says OS should ignore this
field :) )
>
> Although in grub/include/multiboot.h it does not exist:
>
> struct multiboot_mmap_entry
> {
> multiboot_uint32_t size;
> multiboot_uint64_t addr;
> multiboot_uint64_t len;
> #define MULTIBOOT_MEMORY_AVAILABLE 1
> #define MULTIBOOT_MEMORY_RESERVED 2
> #define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3
> #define MULTIBOOT_MEMORY_NVS 4
> #define MULTIBOOT_MEMORY_BADRAM 5
> multiboot_uint32_t type;
> } GRUB_PACKED;
> typedef struct multiboot_mmap_entry multiboot_memory_map_t;
>
>
> On Sat, Feb 13, 2016 at 11:12 PM, Andrei Borzenkov <arvidj...@gmail.com>
> wrote:
>> 14.02.2016 00:20, Wink Saville пишет:
>>> I'm processing multiboot_tag_mmap and the multiboot_mmap_entry.zero
>>> isn't zero. As best as I can tell grub isn't initializing it. Here is
>>> the code from grub-core/loader/i386/multiboot_mbi.c:
>>>
>>> /* Helper for grub_fill_multiboot_mmap. */
>>> static int
>>> grub_fill_multiboot_mmap_iter (grub_uint64_t addr, grub_uint64_t size,
>>> grub_memory_type_t type, void *data)
>>> {
>>> struct multiboot_mmap_entry **mmap_entry = data;
>>>
>>> (*mmap_entry)->addr = addr;
>>> (*mmap_entry)->len = size;
>>> (*mmap_entry)->type = type;
>>> (*mmap_entry)->size = sizeof (struct multiboot_mmap_entry) - sizeof
>>> ((*mmap_entry)->size);
>>> (*mmap_entry)++;
>>>
>>> return 0;
>>> }
>>>
>>> And similar code in grub-core/loader/multiboot_mbi2.c:
>>>
>>> /* Helper for grub_fill_multiboot_mmap. */
>>> static int
>>> grub_fill_multiboot_mmap_iter (grub_uint64_t addr, grub_uint64_t size,
>>> grub_memory_type_t type, void *data)
>>> {
>>> struct multiboot_mmap_entry **mmap_entry = data;
>>>
>>> (*mmap_entry)->addr = addr;
>>> (*mmap_entry)->len = size;
>>> (*mmap_entry)->type = type;
>>> (*mmap_entry)++;
>>>
>>> return 0;
>>> }
>>>
>>> And I'd expect to see:
>>>
>>> (*mmap_entry)->zero = 0;
>>>
>>> Is there a reason its not being zeroed?
>>>
>>
>> Because it does not exist?
>>
>>
>> _______________________________________________
>> Grub-devel mailing list
>> Grub-devel@gnu.org
>> https://lists.gnu.org/mailman/listinfo/grub-devel
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
