[PATCH] linker_lists: set LINKER_LIST_ALIGN to 8 if 64BIT

Jerome Forissier jerome.forissier at linaro.org
Mon Oct 7 15:35:31 CEST 2024



On 10/7/24 15:31, Heinrich Schuchardt wrote:
> On 07.10.24 14:55, Jerome Forissier wrote:
>>
>>
>> On 10/7/24 11:42, Jerome Forissier wrote:
>>> CPU_MIPS64 needs 8-byte alignment on the linker lists, otherwise an
>>> exception may occur. In fact all 64BIT architectures should default
>>> to 8; that's what this patch does.
>>> Fixes an issue found on malta64 with QEMU:
>>>
>>>   Breakpoint 1, lists_driver_lookup_name (name=0xffffffffbe043578 "root_driver") at /home/uboot/u-boot/drivers/core/lists.c:31
>>>   31                      if (!strcmp(name, entry->name))
>>>   [...]
>>>   ld      a1,0(s0)
>>>
>>>   (gdb) p/x &entry->name
>>>   0xffffffffbe04b0d4
>>>   (gdb) p/x $s0
>>>   0xffffffffbe04b0d4
>>>
>>>   $ grep __u_boot_list /tmp/malta64/u-boot.objdump
>>>   4 __u_boot_list 000018e0  ffffffffbe04a4d4  ffffffffbe04a4d4  0004a584  2**2
>>>
>>> Signed-off-by: Jerome Forissier <jerome.forissier at linaro.org>
>>> ---
>>>   arch/Kconfig | 2 +-
>>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/arch/Kconfig b/arch/Kconfig
>>> index 8f1f4667012..72bf4029251 100644
>>> --- a/arch/Kconfig
>>> +++ b/arch/Kconfig
>>> @@ -45,7 +45,7 @@ config SYS_CACHELINE_SIZE
>>>   config LINKER_LIST_ALIGN
>>>       int
>>>       default 32 if SANDBOX
>>> -    default 8 if ARM64 || X86
>>> +    default 8 if 64BIT
>>>       default 4
>>>       help
>>>         Force the each linker list to be aligned to this boundary. This
>>
>> Superseded by https://patchwork.ozlabs.org/project/uboot/patch/20241007094206.2928071-1-jerome.forissier@linaro.org/
> 
> It seems you are pointing to this very patch. You probably wanted to
> respond to an earlier version.

Sorry about that. I wanted to reply to [1] indeed. And I wondering
why my reply wouldn't show up on patchwork... :o

[1] http://patchwork.ozlabs.org/project/uboot/patch/20241003142030.1610222-1-jerome.forissier@linaro.org/

Thanks.
-- 
Jerome


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