From: Alexandre Ghiti <alex@ghiti.fr> To: Jonathan Corbet <corbet@lwn.net>, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Arnd Bergmann <arnd@arndb.de>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Alexander Potapenko <glider@google.com>, Dmitry Vyukov <dvyukov@google.com>, linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-arch@vger.kernel.org, linux-mm@kvack.org Cc: Alexandre Ghiti <alex@ghiti.fr> Subject: [PATCH] riscv: Protect kernel linear mapping only if CONFIG_STRICT_KERNEL_RWX is set Date: Thu, 15 Apr 2021 07:04:26 -0400 [thread overview] Message-ID: <20210415110426.2238-1-alex@ghiti.fr> (raw) If CONFIG_STRICT_KERNEL_RWX is not set, we cannot set different permissions to the kernel data and text sections, so make sure it is defined before trying to protect the kernel linear mapping. Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> --- arch/riscv/kernel/setup.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index 626003bb5fca..ab394d173cd4 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -264,12 +264,12 @@ void __init setup_arch(char **cmdline_p) sbi_init(); - if (IS_ENABLED(CONFIG_STRICT_KERNEL_RWX)) + if (IS_ENABLED(CONFIG_STRICT_KERNEL_RWX)) { protect_kernel_text_data(); - -#if defined(CONFIG_64BIT) && defined(CONFIG_MMU) - protect_kernel_linear_mapping_text_rodata(); +#ifdef CONFIG_64BIT + protect_kernel_linear_mapping_text_rodata(); #endif + } #ifdef CONFIG_SWIOTLB swiotlb_init(1); -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Alexandre Ghiti <alex@ghiti.fr> To: Jonathan Corbet <corbet@lwn.net>, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Arnd Bergmann <arnd@arndb.de>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Alexander Potapenko <glider@google.com>, Dmitry Vyukov <dvyukov@google.com>, linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-arch@vger.kernel.org, linux-mm@kvack.org Cc: Alexandre Ghiti <alex@ghiti.fr> Subject: [PATCH] riscv: Protect kernel linear mapping only if CONFIG_STRICT_KERNEL_RWX is set Date: Thu, 15 Apr 2021 07:04:26 -0400 [thread overview] Message-ID: <20210415110426.2238-1-alex@ghiti.fr> (raw) If CONFIG_STRICT_KERNEL_RWX is not set, we cannot set different permissions to the kernel data and text sections, so make sure it is defined before trying to protect the kernel linear mapping. Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> --- arch/riscv/kernel/setup.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index 626003bb5fca..ab394d173cd4 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -264,12 +264,12 @@ void __init setup_arch(char **cmdline_p) sbi_init(); - if (IS_ENABLED(CONFIG_STRICT_KERNEL_RWX)) + if (IS_ENABLED(CONFIG_STRICT_KERNEL_RWX)) { protect_kernel_text_data(); - -#if defined(CONFIG_64BIT) && defined(CONFIG_MMU) - protect_kernel_linear_mapping_text_rodata(); +#ifdef CONFIG_64BIT + protect_kernel_linear_mapping_text_rodata(); #endif + } #ifdef CONFIG_SWIOTLB swiotlb_init(1); -- 2.20.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next reply other threads:[~2021-04-15 11:04 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-15 11:04 Alexandre Ghiti [this message] 2021-04-15 11:04 ` [PATCH] riscv: Protect kernel linear mapping only if CONFIG_STRICT_KERNEL_RWX is set Alexandre Ghiti 2021-04-16 10:41 ` Anup Patel 2021-04-16 10:41 ` Anup Patel 2021-04-16 10:41 ` Anup Patel 2021-04-16 10:47 ` Alex Ghiti 2021-04-16 10:47 ` Alex Ghiti 2021-04-16 16:33 ` Palmer Dabbelt 2021-04-16 16:33 ` Palmer Dabbelt 2021-04-17 17:26 ` Alex Ghiti 2021-04-17 17:26 ` Alex Ghiti 2021-04-23 1:34 ` Palmer Dabbelt 2021-04-23 1:34 ` Palmer Dabbelt
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