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author | James Morse <james.morse@arm.com> | 2019-10-17 18:42:58 +0100 |
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committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-10-25 17:46:40 +0100 |
commit | 05460849c3b51180d5ada3373d0449aea19075e4 (patch) | |
tree | 5bfcc53493c796afc793825f8801159106bdcf27 /net/mac80211 | |
parent | Linux 5.4-rc3 (diff) | |
download | linux-dev-05460849c3b51180d5ada3373d0449aea19075e4.tar.xz linux-dev-05460849c3b51180d5ada3373d0449aea19075e4.zip |
arm64: errata: Hide CTR_EL0.DIC on systems affected by Neoverse-N1 #1542419
Cores affected by Neoverse-N1 #1542419 could execute a stale instruction
when a branch is updated to point to freshly generated instructions.
To workaround this issue we need user-space to issue unnecessary
icache maintenance that we can trap. Start by hiding CTR_EL0.DIC.
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'net/mac80211')
0 files changed, 0 insertions, 0 deletions