From: Wei Liu <wei.liu2@citrix.com>
To: Xen-devel <xen-devel@lists.xenproject.org>
Cc: Juergen Gross <jgross@suse.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Wei Liu <wei.liu2@citrix.com>, Jan Beulich <JBeulich@suse.com>
Subject: [PATCH RFC 2/4] x86: report if PCID and INVPCID are supported
Date: Thu, 15 Feb 2018 12:10:38 +0000 [thread overview]
Message-ID: <20180215121040.20585-3-wei.liu2@citrix.com> (raw)
In-Reply-To: <20180215121040.20585-1-wei.liu2@citrix.com>
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
xen/arch/x86/setup.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index ac530ece2c..89e42865a4 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1701,6 +1701,13 @@ void __init noreturn __start_xen(unsigned long mbi_p)
cpu_has_nx ? XENLOG_INFO : XENLOG_WARNING "Warning: ",
cpu_has_nx ? "" : "not ");
+
+ printk(XENLOG_INFO
+ "PCID (Process-Context IDentifier) %ssupported\n",
+ cpu_has_pcid ? "" : "not ");
+
+ printk(XENLOG_INFO "INVPCID %ssupported\n", cpu_has_invpcid ? "" : "not ");
+
/*
* We're going to setup domain0 using the module(s) that we stashed safely
* above our heap. The second module, if present, is an initrd ramdisk.
--
2.11.0
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next prev parent reply other threads:[~2018-02-15 12:10 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-15 12:10 [PATCH RFC 0/4] Use INVPCID to flush global mappings Wei Liu
2018-02-15 12:10 ` [PATCH RFC 1/4] x86: introduce cpu_has_invpcid Wei Liu
2018-02-15 12:31 ` Jan Beulich
2018-02-15 12:10 ` Wei Liu [this message]
2018-02-15 12:10 ` [PATCH RFC 3/4] x86: add invpcid.h Wei Liu
2018-02-15 12:15 ` Andrew Cooper
2018-02-15 12:24 ` Wei Liu
2018-02-15 12:26 ` Andrew Cooper
2018-02-15 12:34 ` Jan Beulich
2018-02-15 12:35 ` Wei Liu
2018-02-15 13:23 ` Jan Beulich
2018-02-15 12:10 ` [PATCH RFC 4/4] x86: use invpcid to do global flush Wei Liu
2018-02-15 15:38 ` [PATCH RFC 0/4] Use INVPCID to flush global mappings Juergen Gross
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