From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org,
David Hildenbrand <david@redhat.com>,
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>,
Matthew Wilcox <willy@infradead.org>,
Thomas Huth <thuth@redhat.com>
Subject: [PATCH v2 05/10] s390/uv: update PG_arch_1 comment
Date: Fri, 12 Apr 2024 16:21:15 +0200 [thread overview]
Message-ID: <20240412142120.220087-6-david@redhat.com> (raw)
In-Reply-To: <20240412142120.220087-1-david@redhat.com>
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.
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
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 914dcec27329..ecfc08902215 100644
--- a/arch/s390/kernel/uv.c
+++ b/arch/s390/kernel/uv.c
@@ -495,13 +495,12 @@ 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
next prev parent reply other threads:[~2024-04-12 14:22 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-12 14:21 [PATCH v2 00/10] s390: PG_arch_1+folio cleanups for uv+hugetlb David Hildenbrand
2024-04-12 14:21 ` [PATCH v2 01/10] s390/uv: don't call folio_wait_writeback() without a folio reference David Hildenbrand
2024-04-12 14:21 ` [PATCH v2 02/10] s390/uv: gmap_make_secure() cleanups for further changes David Hildenbrand
2024-05-07 15:27 ` Claudio Imbrenda
2024-04-12 14:21 ` [PATCH v2 03/10] s390/uv: split large folios in gmap_make_secure() David Hildenbrand
2024-05-07 15:43 ` Claudio Imbrenda
2024-04-12 14:21 ` [PATCH v2 04/10] s390/uv: convert PG_arch_1 users to only work on small folios David Hildenbrand
2024-05-07 15:49 ` Claudio Imbrenda
2024-04-12 14:21 ` David Hildenbrand [this message]
2024-04-12 14:21 ` [PATCH v2 06/10] s390/uv: make uv_convert_from_secure() a static function David Hildenbrand
2024-05-07 15:53 ` Claudio Imbrenda
2024-04-12 14:21 ` [PATCH v2 07/10] s390/uv: convert uv_destroy_owned_page() to uv_destroy_(folio|pte)() David Hildenbrand
2024-05-07 16:25 ` Claudio Imbrenda
2024-04-12 14:21 ` [PATCH v2 08/10] s390/uv: convert uv_convert_owned_from_secure() to uv_convert_from_secure_(folio|pte)() David Hildenbrand
2024-05-07 16:26 ` Claudio Imbrenda
2024-04-12 14:21 ` [PATCH v2 09/10] s390/uv: implement HAVE_ARCH_MAKE_FOLIO_ACCESSIBLE David Hildenbrand
2024-05-07 16:29 ` Claudio Imbrenda
2024-04-12 14:21 ` [PATCH v2 10/10] s390/hugetlb: convert PG_arch_1 code to work on folio->flags David Hildenbrand
2024-05-07 16:33 ` Claudio Imbrenda
2024-05-08 18:08 ` David Hildenbrand
2024-05-10 8:45 ` Claudio Imbrenda
2024-04-30 18:49 ` [PATCH v2 00/10] s390: PG_arch_1+folio cleanups for uv+hugetlb David Hildenbrand
2024-05-06 8:38 ` Heiko Carstens
2024-05-07 16:34 ` Claudio Imbrenda
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