lkml.org 
[lkml]   [2018]   [Oct]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] kdump, vmcoreinfo: Export sme_me_mask value to vmcoreinfo
Date
For AMD machine with SME feature, makedumpfile tools need to know
whether the crash kernel was encrypted or not. So it is necessary
to write the sme_me_mask to vmcoreinfo.

Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
---
arch/x86/kernel/machine_kexec_64.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index 4c8acdfdc5a7..dcfdb64d1097 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -357,6 +357,8 @@ void arch_crash_save_vmcoreinfo(void)
vmcoreinfo_append_str("NUMBER(pgtable_l5_enabled)=%d\n",
pgtable_l5_enabled());

+ VMCOREINFO_NUMBER(sme_me_mask);
+
#ifdef CONFIG_NUMA
VMCOREINFO_SYMBOL(node_data);
VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
--
2.17.1
\
 
 \ /
  Last update: 2018-10-26 11:37    [W:0.142 / U:6.844 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site