From b39b049749ce08c7756be57082177730617bb9a0 Mon Sep 17 00:00:00 2001
From: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Date: Thu, 11 Jul 2019 20:02:10 +0800
Subject: [PATCH] xen: Map "xen_nopv" parameter to "nopv" and mark it obsolete
Clean up unnecessory code after that operation.
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Signed-off-by: Juergen Gross <jgross@suse.com>
---
Documentation/admin-guide/kernel-parameters.txt | 2 ++
arch/x86/xen/enlighten_hvm.c | 12 ++++++------
2 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 936e8e7e6474..2d990585402c 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5243,6 +5243,8 @@
xen_nopv [X86]
Disables the PV optimizations forcing the HVM guest to
run as generic HVM guest with no PV drivers.
+ This option is obsoleted by the "nopv" option, which
+ has equivalent effect for XEN platform.
xen_scrub_pages= [XEN]
Boolean option to control scrubbing pages before giving them back
diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c
index ac4943cd456a..1756cf775ef2 100644
--- a/arch/x86/xen/enlighten_hvm.c
+++ b/arch/x86/xen/enlighten_hvm.c
@@ -210,18 +210,18 @@ static void __init xen_hvm_guest_init(void)
#endif
}
-static bool xen_nopv;
static __init int xen_parse_nopv(char *arg)
{
- xen_nopv = true;
- return 0;
+ pr_notice("\"xen_nopv\" is deprecated, please use \"nopv\" instead\n");
+
+ if (xen_cpuid_base())
+ nopv = true;
+ return 0;
}
early_param("xen_nopv", xen_parse_nopv);
bool __init xen_hvm_need_lapic(void)
{
- if (xen_nopv)
- return false;
if (xen_pv_domain())
return false;
if (!xen_hvm_domain())
@@ -233,7 +233,7 @@ bool __init xen_hvm_need_lapic(void)
static uint32_t __init xen_platform_hvm(void)
{
- if (xen_pv_domain() || xen_nopv)
+ if (xen_pv_domain())
return 0;
return xen_cpuid_base();