linux-kernel - [GIT PULL] s390 fixes for 6.13-rc4

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Message-ID: <Z2GQ4oCwZobLsNpp@li-008a6a4c-3549-11b2-a85c-c5cc2836eea2.ibm.com>
Date: Tue, 17 Dec 2024 15:55:30 +0100
From: Alexander Gordeev <agordeev@...ux.ibm.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Vasily Gorbik <gor@...ux.ibm.com>, Heiko Carstens <hca@...ux.ibm.com>,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [GIT PULL] s390 fixes for 6.13-rc4

Hi Linus,

please pull s390 fixes for 6.13-rc4.

Thanks,
Alexander

The following changes since commit fac04efc5c793dccbd07e2d59af9f90b7fc0dca4:

  Linux 6.13-rc2 (2024-12-08 14:03:39 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git tags/s390-6.13-3

for you to fetch changes up to 282da38b465395c930687974627c24f47ddce5ff:

  s390/mm: Consider KMSAN modules metadata for paging levels (2024-12-15 23:35:09 +0100)

----------------------------------------------------------------
s390 fixes for 6.13-rc4

- Fix DirectMap accounting in /proc/meminfo file

- Fix strscpy() return code handling that led to "unsigned 'len' is
  never less than zero" warning

- Fix the calculation determining whether to use three- or four-level
  paging: account KMSAN modules metadata

----------------------------------------------------------------
Alexander Gordeev (1):
      s390/ipl: Fix never less than zero warning

Heiko Carstens (1):
      s390/mm: Fix DirectMap accounting

Vasily Gorbik (1):
      s390/mm: Consider KMSAN modules metadata for paging levels

 arch/s390/boot/startup.c | 2 ++
 arch/s390/boot/vmem.c    | 6 +++---
 arch/s390/kernel/ipl.c   | 2 +-
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c
index abe6e6c0ab98..6087d38c7235 100644
--- a/arch/s390/boot/startup.c
+++ b/arch/s390/boot/startup.c
@@ -234,6 +234,8 @@ static unsigned long get_vmem_size(unsigned long identity_size,
 	vsize = round_up(SZ_2G + max_mappable, rte_size) +
 		round_up(vmemmap_size, rte_size) +
 		FIXMAP_SIZE + MODULES_LEN + KASLR_LEN;
+	if (IS_ENABLED(CONFIG_KMSAN))
+		vsize += MODULES_LEN * 2;
 	return size_add(vsize, vmalloc_size);
 }
 
diff --git a/arch/s390/boot/vmem.c b/arch/s390/boot/vmem.c
index 145035f84a0e..3fa28db2fe59 100644
--- a/arch/s390/boot/vmem.c
+++ b/arch/s390/boot/vmem.c
@@ -306,7 +306,7 @@ static void pgtable_pte_populate(pmd_t *pmd, unsigned long addr, unsigned long e
 			pages++;
 		}
 	}
-	if (mode == POPULATE_DIRECT)
+	if (mode == POPULATE_IDENTITY)
 		update_page_count(PG_DIRECT_MAP_4K, pages);
 }
 
@@ -339,7 +339,7 @@ static void pgtable_pmd_populate(pud_t *pud, unsigned long addr, unsigned long e
 		}
 		pgtable_pte_populate(pmd, addr, next, mode);
 	}
-	if (mode == POPULATE_DIRECT)
+	if (mode == POPULATE_IDENTITY)
 		update_page_count(PG_DIRECT_MAP_1M, pages);
 }
 
@@ -372,7 +372,7 @@ static void pgtable_pud_populate(p4d_t *p4d, unsigned long addr, unsigned long e
 		}
 		pgtable_pmd_populate(pud, addr, next, mode);
 	}
-	if (mode == POPULATE_DIRECT)
+	if (mode == POPULATE_IDENTITY)
 		update_page_count(PG_DIRECT_MAP_2G, pages);
 }
 
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index edbb52ce3f1e..7d12a1305fc9 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -270,7 +270,7 @@ static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj,	\
 	if (len >= sizeof(_value))					\
 		return -E2BIG;						\
 	len = strscpy(_value, buf, sizeof(_value));			\
-	if (len < 0)							\
+	if ((ssize_t)len < 0)						\
 		return len;						\
 	strim(_value);							\
 	return len;							\