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From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org,
	linux-s390@vger.kernel.org,
	kvm@vger.kernel.org,
	David Hildenbrand <david@redhat.com>,
	Matthew Wilcox <willy@infradead.org>,
	Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Alexander Gordeev <agordeev@linux.ibm.com>,
	Christian Borntraeger <borntraeger@linux.ibm.com>,
	Sven Schnelle <svens@linux.ibm.com>,
	Janosch Frank <frankja@linux.ibm.com>,
	Claudio Imbrenda <imbrenda@linux.ibm.com>,
	Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
	Thomas Huth <thuth@redhat.com>
Subject: [PATCH v1 4/5] s390/uv: update PG_arch_1 comment
Date: Thu,  4 Apr 2024 18:36:41 +0200
Message-ID: <20240404163642.1125529-5-david@redhat.com>
In-Reply-To: <20240404163642.1125529-1-david@redhat.com>
References: <20240404163642.1125529-1-david@redhat.com>
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We removed the usage of PG_arch_1 for page tables in commit
a51324c430db ("s390/cmma: rework no-dat handling").

Let's update the comment in UV to reflect that.

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 arch/s390/kernel/uv.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c
index 9c0113b26735..76fc61333fae 100644
--- a/arch/s390/kernel/uv.c
+++ b/arch/s390/kernel/uv.c
@@ -471,13 +471,12 @@ int arch_make_page_accessible(struct page *page)
 		return 0;
 
 	/*
-	 * PG_arch_1 is used in 3 places:
-	 * 1. for kernel page tables during early boot
-	 * 2. for storage keys of huge pages and KVM
-	 * 3. As an indication that this small folio might be secure. This can
+	 * PG_arch_1 is used in 2 places:
+	 * 1. for storage keys of hugetlb folios and KVM
+	 * 2. As an indication that this small folio might be secure. This can
 	 *    overindicate, e.g. we set the bit before calling
 	 *    convert_to_secure.
-	 * As secure pages are never huge, all 3 variants can co-exists.
+	 * As secure pages are never large folios, both variants can co-exists.
 	 */
 	if (!test_bit(PG_arch_1, &folio->flags))
 		return 0;
-- 
2.44.0