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HV: add a specific stack space used in CPU booting

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The original stack used in CPU booting is: ld_bss_end + 4KB;
which could be out of the RAM size limit defined in link_ram file.

So add a specific stack space in link_ram file, and used in
CPU booting.

Tracked-On: #4738
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Reviewed by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Minggui Cao
2020-04-28 15:31:21 +08:00
committed by wenlingz
parent 5936bf431c
commit 691a0e2e56
2 changed files with 10 additions and 4 deletions
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6
hypervisor/arch/x86/boot/cpu_primary.S
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@@ -237,10 +237,8 @@ cpu_primary_start_64:
primary_start_long_mode:
/* Initialize temporary stack pointer */
lea ld_bss_end(%rip), %rsp
/*0x1000 = PAGE_SIZE*/
add $0x1000,%rsp
/* Initialize temporary stack pointer, size = 0x1000 */
lea stack_for_boot(%rip), %rsp
/* 16 = CPU_STACK_ALIGN */
and $(~(16 - 1)),%rsp