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arch/x86_64/intel64/intel64_head.S: move initial RSP for AP cores below regs area

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move initial RSP for AP cores below regs area.
otherwise IDLE thread for AP cores can be corrupted

XCP region now match regs allocation in up_initial_state()

Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
This commit is contained in:
p-szafonimateusz 2024-08-30 11:36:32 +02:00 • committed by Xiang Xiao
parent 192dde1b58
commit bbea8dcefe
1 changed files with 4 additions and 0 deletions
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4
arch/x86_64/src/intel64/intel64_head.S
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@ -364,6 +364,10 @@ ap_start:
add %rax, %rbx
mov (%rbx), %rsp
/* Move initial RSP below IDLE TCB regs */
sub $XCPTCONTEXT_SIZE, %rsp
and $(~XCPTCONTEXT_SIZE), %rsp
/* Jump to ap_start routine */
movabs $x86_64_ap_boot, %rbx
jmp *%rbx