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amd64: add defines and decode protection keys and SGX page faults reasons.

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Reviewed by:	markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D18893
This commit is contained in:
Konstantin Belousov 2019-02-20 09:46:44 +00:00
parent 1809ef7836
commit 87b1bf4f31
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=344352
2 changed files with 5 additions and 1 deletions
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4
sys/amd64/amd64/trap.c
View File

@ -885,10 +885,12 @@ trap_fatal(frame, eva)
#endif
if (type == T_PAGEFLT) {
printf("fault virtual address = 0x%lx\n", eva);
printf("fault code = %s %s %s, %s\n",
printf("fault code = %s %s %s%s%s, %s\n",
code & PGEX_U ? "user" : "supervisor",
code & PGEX_W ? "write" : "read",
code & PGEX_I ? "instruction" : "data",
code & PGEX_PK ? " prot key" : " ",
code & PGEX_SGX ? " SGX" : " ",
code & PGEX_RSV ? "reserved bits in PTE" :
code & PGEX_P ? "protection violation" : "page not present");
}

2
sys/amd64/include/pmap.h
View File

@ -131,6 +131,8 @@
#define PGEX_U 0x04 /* access from User mode (UPL) */
#define PGEX_RSV 0x08 /* reserved PTE field is non-zero */
#define PGEX_I 0x10 /* during an instruction fetch */
#define PGEX_PK 0x20 /* protection key violation */
#define PGEX_SGX 0x40 /* SGX-related */
/*
* undef the PG_xx macros that define bits in the regular x86 PTEs that