git: af861a369e4e - stable/13 - amd64: invalidate TLB between page table update and access

[Konstantin Belousov]

The branch stable/13 has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=af861a369e4ec7ea02d0f6611efd84d10b4b103e

commit af861a369e4ec7ea02d0f6611efd84d10b4b103e
Author:     Konstantin Belousov <kib at FreeBSD.org>
AuthorDate: 2021-04-16 18:28:08 +0000
Commit:     Konstantin Belousov <kib at FreeBSD.org>
CommitDate: 2021-05-07 00:35:54 +0000

    amd64: invalidate TLB between page table update and access
    
    (cherry picked from commit 21fc6a2a10cf6fbd294decbb0001473693ec1618)
---
 sys/amd64/amd64/pmap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c
index 1fb81384f11e..01644b9661af 100644
--- a/sys/amd64/amd64/pmap.c
+++ b/sys/amd64/amd64/pmap.c
@@ -2102,6 +2102,7 @@ pmap_bootstrap_la57(void *arg __unused)
 	*(u_long *)(v_code + 2 + (la57_trampoline_gdt_desc - la57_trampoline)) =
 	    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);
 	la57_tramp(KPML5phys);
 
 	/*