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| author |   Zhenzhong Duan <zhenzhong.duan@oracle.com> | 2019-07-11 20:02:10 +0800 |
|---|---|---|
| committer |   Juergen Gross <jgross@suse.com> | 2019-07-17 08:09:58 +0200 |
| commit | b39b049749ce08c7756be57082177730617bb9a0 (patch) | |
| tree | b97c0fdbd1873cd88057655bdd52cea4c75c8f54 | |
| parent | x86: Add "nopv" parameter to disable PV extensions (diff) | |
| download | linux-dev-b39b049749ce08c7756be57082177730617bb9a0.tar.xz linux-dev-b39b049749ce08c7756be57082177730617bb9a0.zip | |
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>
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 2 | ||||
| -rw-r--r-- | 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(); |