Author: kib
Date: Sat Dec 7 00:23:19 2019
New Revision: 355474
URL: https://svnweb.freebsd.org/changeset/base/355474
Log:
amd64: properly set the start of the io permission bitmap for BSP
... after the initial common TSS is copied into its final location
during PCPU reallocation.
Reported by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/amd64/amd64/pmap.c
Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c Fri Dec 6 23:59:23 2019 (r355473)
+++ head/sys/amd64/amd64/pmap.c Sat Dec 7 00:23:19 2019 (r355474)
@@ -1771,6 +1771,8 @@ pmap_bootstrap(vm_paddr_t *firstaddr)
pcpu_init(&__pcpu[0], 0, sizeof(struct pcpu));
amd64_bsp_pcpu_init1(&__pcpu[0]);
amd64_bsp_ist_init(&__pcpu[0]);
+ __pcpu[0].pc_common_tss.tss_iobase = sizeof(struct amd64tss) +
+ IOPERM_BITMAP_SIZE;
memcpy(__pcpu[0].pc_gdt, temp_bsp_pcpu.pc_gdt, NGDT *
sizeof(struct user_segment_descriptor));
gdt_segs[GPROC0_SEL].ssd_base = (uintptr_t)&__pcpu[0].pc_common_tss;
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