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Message-Id: <20250523043935.2009972-8-kees@kernel.org>
Date: Thu, 22 May 2025 21:39:18 -0700
From: Kees Cook <kees@...nel.org>
To: Arnd Bergmann <arnd@...db.de>
Cc: Kees Cook <kees@...nel.org>,
Madhavan Srinivasan <maddy@...ux.ibm.com>,
Michael Ellerman <mpe@...erman.id.au>,
Nicholas Piggin <npiggin@...il.com>,
Christophe Leroy <christophe.leroy@...roup.eu>,
Naveen N Rao <naveen@...nel.org>,
"Ritesh Harjani (IBM)" <ritesh.list@...il.com>,
"Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
Andrew Morton <akpm@...ux-foundation.org>,
linuxppc-dev@...ts.ozlabs.org,
"Gustavo A. R. Silva" <gustavoars@...nel.org>,
Christoph Hellwig <hch@....de>,
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Andrey Konovalov <andreyknvl@...il.com>,
Andrey Ryabinin <ryabinin.a.a@...il.com>,
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Masahiro Yamada <masahiroy@...nel.org>,
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Subject: [PATCH v2 08/14] powerpc: Handle KCOV __init vs inline mismatches
When KCOV is enabled all functions get instrumented, unless
the __no_sanitize_coverage attribute is used. To prepare for
__no_sanitize_coverage being applied to __init functions, we have to
handle differences in how GCC's inline optimizations get resolved. For
s390 this requires forcing a couple functions to be inline with
__always_inline.
Signed-off-by: Kees Cook <kees@...nel.org>
---
Cc: Madhavan Srinivasan <maddy@...ux.ibm.com>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Nicholas Piggin <npiggin@...il.com>
Cc: Christophe Leroy <christophe.leroy@...roup.eu>
Cc: Naveen N Rao <naveen@...nel.org>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@...il.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: <linuxppc-dev@...ts.ozlabs.org>
---
arch/powerpc/mm/book3s64/hash_utils.c | 2 +-
arch/powerpc/mm/book3s64/radix_pgtable.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
index 5158aefe4873..93f1e1eb5ea6 100644
--- a/arch/powerpc/mm/book3s64/hash_utils.c
+++ b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -409,7 +409,7 @@ static DEFINE_RAW_SPINLOCK(linear_map_kf_hash_lock);
static phys_addr_t kfence_pool;
-static inline void hash_kfence_alloc_pool(void)
+static __always_inline void hash_kfence_alloc_pool(void)
{
if (!kfence_early_init_enabled())
goto err;
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index 9f764bc42b8c..3238e9ed46b5 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -363,7 +363,7 @@ static int __meminit create_physical_mapping(unsigned long start,
}
#ifdef CONFIG_KFENCE
-static inline phys_addr_t alloc_kfence_pool(void)
+static __always_inline phys_addr_t alloc_kfence_pool(void)
{
phys_addr_t kfence_pool;
--
2.34.1
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