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amd64 pmap: be more verbose around entering and leaving LA57 trampoline

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(cherry picked from commit 2912c2fbd44072b7372c24dd34392c01f5104497)
This commit is contained in:
Konstantin Belousov 2021-11-06 08:10:16 +02:00
parent 6f357a211a
commit 0eec03f113
1 changed files with 7 additions and 0 deletions
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7
sys/amd64/amd64/pmap.c
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@ -2247,6 +2247,10 @@ pmap_bootstrap_la57(void *arg __unused)
la57_trampoline_gdt - la57_trampoline + VM_PAGE_TO_PHYS(m_code);
la57_tramp = (void (*)(uint64_t))VM_PAGE_TO_PHYS(m_code);
invlpg((vm_offset_t)la57_tramp);
if (bootverbose) {
printf("entering LA57 trampoline at %#lx\n",
(vm_offset_t)la57_tramp);
}
la57_tramp(KPML5phys);
/*
@ -2261,6 +2265,9 @@ pmap_bootstrap_la57(void *arg __unused)
(struct system_segment_descriptor *)&__pcpu[0].pc_gdt[GPROC0_SEL]);
ltr(GSEL(GPROC0_SEL, SEL_KPL));
if (bootverbose)
printf("LA57 trampoline returned, CR4 %#lx\n", rcr4());
/*
* Now unmap the trampoline, and free the pages.
* Clear pml5 entry used for 1:1 trampoline mapping.