From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/tools/testing/selftests/x86/mov_ss_trap.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/kernel/tools/testing/selftests/x86/mov_ss_trap.c b/kernel/tools/testing/selftests/x86/mov_ss_trap.c
index 3c3a022..6da0ac3 100644
--- a/kernel/tools/testing/selftests/x86/mov_ss_trap.c
+++ b/kernel/tools/testing/selftests/x86/mov_ss_trap.c
@@ -257,7 +257,8 @@
err(1, "sigaltstack");
sethandler(SIGSEGV, handle_and_longjmp, SA_RESETHAND | SA_ONSTACK);
nr = SYS_getpid;
- asm volatile ("mov %[ss], %%ss; SYSENTER" : "+a" (nr)
+ /* Clear EBP first to make sure we segfault cleanly. */
+ asm volatile ("xorl %%ebp, %%ebp; mov %[ss], %%ss; SYSENTER" : "+a" (nr)
: [ss] "m" (ss) : "flags", "rcx"
#ifdef __x86_64__
, "r11"
--
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