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Thu, 11 Jun 2026 06:01:49 -0700 (PDT) Date: Thu, 11 Jun 2026 13:01:39 +0000 In-Reply-To: <20260611130144.1385343-1-abarnas@google.com> Mime-Version: 1.0 References: <20260611130144.1385343-1-abarnas@google.com> X-Mailer: git-send-email 2.54.0.1136.gdb2ca164c4-goog Message-ID: <20260611130144.1385343-2-abarnas@google.com> Subject: [RFC PATCH 1/6] arm64: mm: explicitly declare module and ftrace execmem regions From: "=?UTF-8?q?Adrian=20Barna=C5=9B?=" To: linux-arm-kernel@lists.infradead.org Cc: linux-mm@kvack.org, "=?UTF-8?q?Adrian=20Barna=C5=9B?=" , Catalin Marinas , Will Deacon , Ryan Roberts , David Hildenbrand , "Mike Rapoport (Microsoft)" , Ard Biesheuvel , Christoph Lameter , Yang Shi , Brendan Jackman Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260611_060152_140511_13E77ACF X-CRM114-Status: GOOD ( 10.30 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Replace the reliance on the EXECMEM_DEFAULT fallback by explicitly defining the execution memory (execmem) regions for MODULE_TEXT, MODULE_DATA, and FTRACE in execmem_arch_setup(). Signed-off-by: Adrian Barna=C5=9B --- arch/arm64/mm/init.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 96711b8578fd..c673a9a839dd 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -519,7 +519,7 @@ struct execmem_info __init *execmem_arch_setup(void) =20 execmem_info =3D (struct execmem_info){ .ranges =3D { - [EXECMEM_DEFAULT] =3D { + [EXECMEM_MODULE_TEXT] =3D { .start =3D start, .end =3D end, .pgprot =3D PAGE_KERNEL, @@ -533,12 +533,28 @@ struct execmem_info __init *execmem_arch_setup(void) .pgprot =3D PAGE_KERNEL_ROX, .alignment =3D 1, }, + [EXECMEM_FTRACE] =3D { + .start =3D VMALLOC_START, + .end =3D VMALLOC_END, + .pgprot =3D PAGE_KERNEL, + .alignment =3D 1, + .fallback_start =3D fallback_start, + .fallback_end =3D fallback_end, + }, [EXECMEM_BPF] =3D { .start =3D VMALLOC_START, .end =3D VMALLOC_END, .pgprot =3D PAGE_KERNEL, .alignment =3D 1, }, + [EXECMEM_MODULE_DATA] =3D { + .start =3D start, + .end =3D end, + .pgprot =3D PAGE_KERNEL, + .alignment =3D 1, + .fallback_start =3D fallback_start, + .fallback_end =3D fallback_end, + }, }, }; =20 --=20 2.54.0.1136.gdb2ca164c4-goog