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xen: issue deprecation warning for 32-bit pv guest 

Support for the kernel as Xen 32-bit PV guest will soon be removed.
Issue a warning when booted as such.

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
This commit is contained in:
Juergen Gross 2019-10-25 09:38:58 +02:00 committed by Boris Ostrovsky
parent ee7f5225dc
commit 6ccae60d01
1 changed files with 8 additions and 0 deletions
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8
arch/x86/xen/enlighten_pv.c
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@ -117,6 +117,14 @@ static void __init xen_banner(void)
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)" : "");
#ifdef CONFIG_X86_32
pr_warn("WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING!\n"
"Support for running as 32-bit PV-guest under Xen will soon be removed\n"
"from the Linux kernel!\n"
"Please use either a 64-bit kernel or switch to HVM or PVH mode!\n"
"WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING!\n");
#endif
}
static void __init xen_pv_init_platform(void)