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From: Russell Currey <ruscur@russell.cc>
To: linuxppc-dev@lists.ozlabs.org
Cc: ajd@linux.ibm.com, kernel-hardening@lists.openwall.com,
	npiggin@gmail.com, Russell Currey <ruscur@russell.cc>
Subject: [PATCH 2/2] powerpc: Remove STRICT_KERNEL_RWX incompatibility with RELOCATABLE
Date: Tue, 24 Dec 2019 17:41:26 +1100	[thread overview]
Message-ID: <20191224064126.183670-2-ruscur@russell.cc> (raw)
In-Reply-To: <20191224064126.183670-1-ruscur@russell.cc>

I have tested this with the Radix MMU and everything seems to work, and
the previous patch for Hash seems to fix everything too.
STRICT_KERNEL_RWX should still be disabled by default for now.

Please test STRICT_KERNEL_RWX + RELOCATABLE!

Signed-off-by: Russell Currey <ruscur@russell.cc>
---
 arch/powerpc/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 1ec34e16ed65..6093c48976bf 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -133,7 +133,7 @@ config PPC
 	select ARCH_HAS_PTE_SPECIAL
 	select ARCH_HAS_MEMBARRIER_CALLBACKS
 	select ARCH_HAS_SCALED_CPUTIME		if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64
-	select ARCH_HAS_STRICT_KERNEL_RWX	if ((PPC_BOOK3S_64 || PPC32) && !RELOCATABLE && !HIBERNATION)
+	select ARCH_HAS_STRICT_KERNEL_RWX	if ((PPC_BOOK3S_64 || PPC32) && !HIBERNATION)
 	select ARCH_HAS_TICK_BROADCAST		if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_HAS_UACCESS_FLUSHCACHE
 	select ARCH_HAS_UACCESS_MCSAFE		if PPC64
-- 
2.24.1


WARNING: multiple messages have this Message-ID (diff)
From: Russell Currey <ruscur@russell.cc>
To: linuxppc-dev@lists.ozlabs.org
Cc: ajd@linux.ibm.com, mpe@ellerman.id.au, christophe.leroy@c-s.fr,
	npiggin@gmail.com, kernel-hardening@lists.openwall.com,
	Russell Currey <ruscur@russell.cc>
Subject: [PATCH 2/2] powerpc: Remove STRICT_KERNEL_RWX incompatibility with RELOCATABLE
Date: Tue, 24 Dec 2019 17:41:26 +1100	[thread overview]
Message-ID: <20191224064126.183670-2-ruscur@russell.cc> (raw)
In-Reply-To: <20191224064126.183670-1-ruscur@russell.cc>

I have tested this with the Radix MMU and everything seems to work, and
the previous patch for Hash seems to fix everything too.
STRICT_KERNEL_RWX should still be disabled by default for now.

Please test STRICT_KERNEL_RWX + RELOCATABLE!

Signed-off-by: Russell Currey <ruscur@russell.cc>
---
 arch/powerpc/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 1ec34e16ed65..6093c48976bf 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -133,7 +133,7 @@ config PPC
 	select ARCH_HAS_PTE_SPECIAL
 	select ARCH_HAS_MEMBARRIER_CALLBACKS
 	select ARCH_HAS_SCALED_CPUTIME		if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64
-	select ARCH_HAS_STRICT_KERNEL_RWX	if ((PPC_BOOK3S_64 || PPC32) && !RELOCATABLE && !HIBERNATION)
+	select ARCH_HAS_STRICT_KERNEL_RWX	if ((PPC_BOOK3S_64 || PPC32) && !HIBERNATION)
 	select ARCH_HAS_TICK_BROADCAST		if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_HAS_UACCESS_FLUSHCACHE
 	select ARCH_HAS_UACCESS_MCSAFE		if PPC64
-- 
2.24.1


  reply	other threads:[~2019-12-24  6:45 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-24  6:41 [PATCH 1/2] powerpc/book3s64/hash: Disable 16M linear mapping size if not aligned Russell Currey
2019-12-24  6:41 ` Russell Currey
2019-12-24  6:41 ` Russell Currey [this message]
2019-12-24  6:41   ` [PATCH 2/2] powerpc: Remove STRICT_KERNEL_RWX incompatibility with RELOCATABLE Russell Currey
2020-01-29  5:17 ` [PATCH 1/2] powerpc/book3s64/hash: Disable 16M linear mapping size if not aligned Michael Ellerman
2020-01-29  5:17   ` Michael Ellerman

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