Cyrill Gorcunov wrote:
Thanks Peter for comments. Peter could you clarify for me a bit
more on the string:
x86/kernel/head_32.S:339
/* Set up the stack pointer */
lss stack_start,%esp
but stack_start is defined as head_32.S:647
.data
ENTRY(stack_start)
.long init_thread_union+THREAD_SIZE
so stack_start *must* be aligned with THREAD_SIZE in vmlinux.lds
at compiling time. There is no PDA at this booting time. Am I wrong?
If you're too busy - just reply me like "Read the code" ;)
That doesn't follow.
You're saying that it *must* be aligned, I don't think that's true
anymore; I think nowadays it's more accurate to say that it *is*
aligned, but I don't think that's fundamental.
-hpa
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