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From: Tom Lendacky <thomas.lendacky@amd.com>
Subject: [PATCH v9 34/38] x86/mm: Create native_make_p4d() for
 PGTABLE_LEVELS <= 4
Date: Fri, 07 Jul 2017 08:44:30 -0500
Message-ID: <20170707134430.29711.74599.stgit@tlendack-t1.amdoffice.net>
In-Reply-To: <20170707133804.29711.1616.stgit@tlendack-t1.amdoffice.net>
References: <20170707133804.29711.1616.stgit@tlendack-t1.amdoffice.net>
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Cc: Brijesh Singh <brijesh.singh@amd.com>, Toshimitsu Kani <toshi.kani@hpe.com>, Radim =?utf-8?b?S3LEjW3DocWZ?= <rkrcmar@redhat.com>, Matt Fleming <matt@codeblueprint.co.uk>, Alexander Potapenko <glider@google.com>, "H. Peter Anvin" <hpa@zytor.com>, Larry Woodman <lwoodman@redhat.com>, Jonathan Corbet <corbet@lwn.net>, Joerg Roedel <joro@8bytes.org>, "Michael S. Tsirkin" <mst@redhat.com>, Ingo Molnar <mingo@redhat.com>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Dave Young <dyoung@redhat.com>, Rik van Riel <riel@redhat.com>, Arnd Bergmann <arnd@arndb.de>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, Dmitry Vyukov <dvyukov@google.com>, Juergen Gross <jgross@suse.com>, Thomas Gleixner <tglx@linutronix.de>, Paolo Bonzini <pbonzini@redhat.com>

Currently, native_make_p4d() is only defined when CONFIG_PGTABLE_LEVELS
is greater than 4. Create a macro that will allow for defining and using
native_make_p4d() when CONFIG_PGTABLES_LEVELS is not greater than 4.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
---
 arch/x86/include/asm/pgtable_types.h |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
index 830992f..6c55973 100644
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -309,6 +309,11 @@ static inline p4dval_t native_p4d_val(p4d_t p4d)
 #else
 #include <asm-generic/pgtable-nop4d.h>
 
+static inline p4d_t native_make_p4d(pudval_t val)
+{
+	return (p4d_t) { .pgd = native_make_pgd((pgdval_t)val) };
+}
+
 static inline p4dval_t native_p4d_val(p4d_t p4d)
 {
 	return native_pgd_val(p4d.pgd);

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