| Message ID | 20230927140123.5283-18-joey.gouly@arm.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show
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From: Joey Gouly <joey.gouly@arm.com>
To: <linux-arm-kernel@lists.infradead.org>
CC: <nd@arm.com>, <akpm@linux-foundation.org>, <aneesh.kumar@linux.ibm.com>,
<catalin.marinas@arm.com>, <dave.hansen@linux.intel.com>,
<joey.gouly@arm.com>, <maz@kernel.org>, <oliver.upton@linux.dev>,
<shuah@kernel.org>, <will@kernel.org>, <kvmarm@lists.linux.dev>,
<linux-fsdevel@vger.kernel.org>, <linux-mm@kvack.org>,
<linux-kselftest@vger.kernel.org>
Subject: [PATCH v1 17/20] arm64: enable POE and PIE to coexist
Date: Wed, 27 Sep 2023 15:01:20 +0100
Message-ID: <20230927140123.5283-18-joey.gouly@arm.com>
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Permission Overlay Extension
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expand
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diff --git a/arch/arm64/include/asm/pgtable-prot.h b/arch/arm64/include/asm/pgtable-prot.h index eed814b00a38..06fb944ef252 100644 --- a/arch/arm64/include/asm/pgtable-prot.h +++ b/arch/arm64/include/asm/pgtable-prot.h @@ -141,10 +141,10 @@ extern bool arm64_use_ng_mappings; #define PIE_E0 ( \ PIRx_ELx_PERM(pte_pi_index(_PAGE_EXECONLY), PIE_X_O) | \ - PIRx_ELx_PERM(pte_pi_index(_PAGE_READONLY_EXEC), PIE_RX) | \ - PIRx_ELx_PERM(pte_pi_index(_PAGE_SHARED_EXEC), PIE_RWX) | \ - PIRx_ELx_PERM(pte_pi_index(_PAGE_READONLY), PIE_R) | \ - PIRx_ELx_PERM(pte_pi_index(_PAGE_SHARED), PIE_RW)) + PIRx_ELx_PERM(pte_pi_index(_PAGE_READONLY_EXEC), PIE_RX_O) | \ + PIRx_ELx_PERM(pte_pi_index(_PAGE_SHARED_EXEC), PIE_RWX_O) | \ + PIRx_ELx_PERM(pte_pi_index(_PAGE_READONLY), PIE_R_O) | \ + PIRx_ELx_PERM(pte_pi_index(_PAGE_SHARED), PIE_RW_O)) #define PIE_E1 ( \ PIRx_ELx_PERM(pte_pi_index(_PAGE_EXECONLY), PIE_NONE_O) | \
Set the EL0/userspace indirection encodings to be the overlay enabled variants of the permissions. Signed-off-by: Joey Gouly <joey.gouly@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> --- arch/arm64/include/asm/pgtable-prot.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)