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| author | Juergen Gross <jgross@suse.com> | 2021-07-30 09:18:03 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2021-08-30 11:57:48 +0200 |
| commit | 2526cff7c4f944924f39043dc657189eccc4fe5c (patch) | |
| tree | b95ccf001740f3ad8740ad88243fa3301d6f63ad /arch/x86/xen/enlighten_pv.c | |
| parent | xen: check required Xen features (diff) | |
| download | linux-2526cff7c4f944924f39043dc657189eccc4fe5c.tar.xz linux-2526cff7c4f944924f39043dc657189eccc4fe5c.zip | |
xen: assume XENFEAT_mmu_pt_update_preserve_ad being set for pv guests
XENFEAT_mmu_pt_update_preserve_ad is always set in Xen 4.0 and newer.
Remove coding assuming it might be zero.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20210730071804.4302-3-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'arch/x86/xen/enlighten_pv.c')
| -rw-r--r-- | arch/x86/xen/enlighten_pv.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index 03149422dce2..753f63734c13 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -116,9 +116,8 @@ static void __init xen_banner(void) HYPERVISOR_xen_version(XENVER_extraversion, &extra); pr_info("Booting paravirtualized kernel on %s\n", pv_info.name); - printk(KERN_INFO "Xen version: %d.%d%s%s\n", - version >> 16, version & 0xffff, extra.extraversion, - xen_feature(XENFEAT_mmu_pt_update_preserve_ad) ? " (preserve-AD)" : ""); + pr_info("Xen version: %d.%d%s (preserve-AD)\n", + version >> 16, version & 0xffff, extra.extraversion); } static void __init xen_pv_init_platform(void) @@ -1302,13 +1301,6 @@ asmlinkage __visible void __init xen_start_kernel(void) xen_init_apic(); #endif - if (xen_feature(XENFEAT_mmu_pt_update_preserve_ad)) { - pv_ops.mmu.ptep_modify_prot_start = - xen_ptep_modify_prot_start; - pv_ops.mmu.ptep_modify_prot_commit = - xen_ptep_modify_prot_commit; - } - machine_ops = xen_machine_ops; /* |