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hv: drop the temperory stack for AP startup

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By switching AP wakeup from broadcast to one by one, we could
set correct stack for each AP and drop the temp stack used during
AP boot.

Tracked-On: #2034
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Yin Fengwei
2018-12-11 17:46:02 +08:00
committed by wenlingz
parent 74849cd983
commit 69dc939243
9 changed files with 48 additions and 85 deletions
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22
hypervisor/arch/x86/init.c
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@@ -108,14 +108,11 @@ void bsp_boot_init(void)
SWITCH_TO(rsp, bsp_boot_post);
}
static void cpu_secondary_post(void)
void init_secondary_cpu(void)
{
uint16_t pcpu_id;
/* Release secondary boot spin-lock to allow one of the next CPU(s) to
* perform this common initialization
*/
spinlock_release(&trampoline_spinlock);
init_cpu_pre(INVALID_CPU_ID);
pcpu_id = get_cpu_id();
@@ -125,18 +122,3 @@ static void cpu_secondary_post(void)
enter_guest_mode(pcpu_id);
}
/* NOTE: this function is using temp stack, and after SWITCH_TO(runtime_sp, to)
* it will switch to runtime stack.
*/
void cpu_secondary_init(void)
{
uint64_t rsp;
init_cpu_pre(INVALID_CPU_ID);
/* Switch to run-time stack */
rsp = (uint64_t)(&get_cpu_var(stack)[CONFIG_STACK_SIZE - 1]);
rsp &= ~(CPU_STACK_ALIGN - 1UL);
SWITCH_TO(rsp, cpu_secondary_post);
}