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hv: delay enabling SMEP/SMAP until the end of PCPU initialization

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Host ACPI parsing is needed during initialization only, not in run time.
Hence we don't need to clear U flag for memory in reserved or ACPI type
E820 entries.

- move enable_smep() and enable_smap() to the end of init_pcpu_post(),
  so stac()/clac() can be removed from any init code before this point.

- call init_seed() before init_pcpu_post(), and rmeove stac()/clac() from
  init_seed().

Tracked-On: #3194
Signed-off-by: Zide Chen <zide.chen@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Zide Chen
2019-05-29 10:57:51 -07:00
committed by ACRN System Integration
parent 9e91f14bec
commit e63d32ac02
7 changed files with 6 additions and 28 deletions
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4
hypervisor/arch/x86/seed/seed.c
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@@ -45,8 +45,6 @@ static uint32_t parse_seed_arg(void)
uint32_t i = SEED_ARG_NUM - 1U;
uint32_t len;
stac();
if (boot_regs[0U] == MULTIBOOT_INFO_MAGIC) {
mbi = (struct multiboot_info *)hpa2hva((uint64_t)boot_regs[1U]);
if (mbi != NULL) {
@@ -79,8 +77,6 @@ static uint32_t parse_seed_arg(void)
}
}
clac();
return i;
}