From: Christophe Leroy <christophe.leroy@csgroup.eu> To: Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au> Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH] powerpc/32s: Fix is_module_segment() when MODULES_VADDR is defined Date: Wed, 5 Aug 2020 15:27:28 +0000 (UTC) [thread overview] Message-ID: <07884ed033c31e074747b7eb8eaa329d15db07ec.1596641219.git.christophe.leroy@csgroup.eu> (raw) When MODULES_VADDR is defined, is_module_segment() shall check the address against it instead of checking agains VMALLOC_START. Fixes: 6ca055322da8 ("powerpc/32s: Use dedicated segment for modules with STRICT_KERNEL_RWX") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> --- arch/powerpc/mm/book3s32/mmu.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/powerpc/mm/book3s32/mmu.c b/arch/powerpc/mm/book3s32/mmu.c index c0162911f6cb..82ae9e06a773 100644 --- a/arch/powerpc/mm/book3s32/mmu.c +++ b/arch/powerpc/mm/book3s32/mmu.c @@ -191,10 +191,17 @@ static bool is_module_segment(unsigned long addr) { if (!IS_ENABLED(CONFIG_MODULES)) return false; +#ifdef MODULES_VADDR + if (addr < ALIGN_DOWN(MODULES_VADDR, SZ_256M)) + return false; + if (addr >= ALIGN(MODULES_END, SZ_256M)) + return false; +#else if (addr < ALIGN_DOWN(VMALLOC_START, SZ_256M)) return false; if (addr >= ALIGN(VMALLOC_END, SZ_256M)) return false; +#endif return true; } -- 2.25.0
WARNING: multiple messages have this Message-ID (diff)
From: Christophe Leroy <christophe.leroy@csgroup.eu> To: Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH] powerpc/32s: Fix is_module_segment() when MODULES_VADDR is defined Date: Wed, 5 Aug 2020 15:27:28 +0000 (UTC) [thread overview] Message-ID: <07884ed033c31e074747b7eb8eaa329d15db07ec.1596641219.git.christophe.leroy@csgroup.eu> (raw) When MODULES_VADDR is defined, is_module_segment() shall check the address against it instead of checking agains VMALLOC_START. Fixes: 6ca055322da8 ("powerpc/32s: Use dedicated segment for modules with STRICT_KERNEL_RWX") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> --- arch/powerpc/mm/book3s32/mmu.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/powerpc/mm/book3s32/mmu.c b/arch/powerpc/mm/book3s32/mmu.c index c0162911f6cb..82ae9e06a773 100644 --- a/arch/powerpc/mm/book3s32/mmu.c +++ b/arch/powerpc/mm/book3s32/mmu.c @@ -191,10 +191,17 @@ static bool is_module_segment(unsigned long addr) { if (!IS_ENABLED(CONFIG_MODULES)) return false; +#ifdef MODULES_VADDR + if (addr < ALIGN_DOWN(MODULES_VADDR, SZ_256M)) + return false; + if (addr >= ALIGN(MODULES_END, SZ_256M)) + return false; +#else if (addr < ALIGN_DOWN(VMALLOC_START, SZ_256M)) return false; if (addr >= ALIGN(VMALLOC_END, SZ_256M)) return false; +#endif return true; } -- 2.25.0
next reply other threads:[~2020-08-05 20:15 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-05 15:27 Christophe Leroy [this message] 2020-08-05 15:27 ` [PATCH] powerpc/32s: Fix is_module_segment() when MODULES_VADDR is defined Christophe Leroy 2020-08-18 13:58 ` Michael Ellerman
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