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| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2020-05-19 15:10:39 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-01 13:14:45 +0200 |
| commit | e682e0d53c390467100dadd0cebcf8f4f0b9498e (patch) | |
| tree | e70adff45fe610475aac54612d954cfbd85da1bc | |
| parent | 6909507e9e98b9eed3ce9d6b4d7528aed106d0fb (diff) | |
| download | linux-stable-e682e0d53c390467100dadd0cebcf8f4f0b9498e.tar.gz linux-stable-e682e0d53c390467100dadd0cebcf8f4f0b9498e.tar.bz2 linux-stable-e682e0d53c390467100dadd0cebcf8f4f0b9498e.zip | |
arm64/cpufeature: Drop TraceFilt feature exposure from ID_DFR0 register
[ Upstream commit 1ed1b90a0594c8c9d31e8bb8be25a2b37717dc9e ]
ID_DFR0 based TraceFilt feature should not be exposed to guests. Hence lets
drop it.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/1589881254-10082-3-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/arm64/kernel/cpufeature.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 095dec566275..de6fa9b4abfa 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -300,7 +300,7 @@ static const struct arm64_ftr_bits ftr_id_pfr0[] = { }; static const struct arm64_ftr_bits ftr_id_dfr0[] = { - ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 28, 4, 0), + /* [31:28] TraceFilt */ S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 24, 4, 0xf), /* PerfMon */ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 20, 4, 0), ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 16, 4, 0), |