lkml.org 
[lkml]   [2017]   [Dec]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[patch 08/16] selftests/x86/ldt_gdt: Prepare for access bit forced
From: Thomas Gleixner <tglx@linutronix.de>

In order to make the LDT mapping RO the access bit needs to be forced by
the kernel. Adjust the test case so it handles that gracefully.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
tools/testing/selftests/x86/ldt_gdt.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/tools/testing/selftests/x86/ldt_gdt.c
+++ b/tools/testing/selftests/x86/ldt_gdt.c
@@ -122,8 +122,7 @@ static void check_valid_segment(uint16_t
* NB: Different Linux versions do different things with the
* accessed bit in set_thread_area().
*/
- if (ar != expected_ar &&
- (ldt || ar != (expected_ar | AR_ACCESSED))) {
+ if (ar != expected_ar && ar != (expected_ar | AR_ACCESSED)) {
printf("[FAIL]\t%s entry %hu has AR 0x%08X but expected 0x%08X\n",
(ldt ? "LDT" : "GDT"), index, ar, expected_ar);
nerrs++;

\
 
 \ /
  Last update: 2017-12-12 18:39    [W:0.233 / U:0.084 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site