linux/arch/arm64
Will Deacon 905e8c5dca arm64: errata: add workaround for cortex-a53 erratum #845719
When running a compat (AArch32) userspace on Cortex-A53, a load at EL0
from a virtual address that matches the bottom 32 bits of the virtual
address used by a recent load at (AArch64) EL1 might return incorrect
data.

This patch works around the issue by writing to the contextidr_el1
register on the exception return path when returning to a 32-bit task.
This workaround is patched in at runtime based on the MIDR value of the
processor.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-04-01 10:24:31 +01:00
..
boot dtb: change binding name to match with newer firmware DT 2015-03-04 15:54:14 -05:00
configs arm64: defconfig: updates for 4.1 2015-03-30 11:29:35 +01:00
crypto arm64/crypto: issue aese/aesmc instructions in pairs 2015-03-19 10:43:57 +00:00
include arm64: errata: add workaround for cortex-a53 erratum #845719 2015-04-01 10:24:31 +01:00
kernel arm64: errata: add workaround for cortex-a53 erratum #845719 2015-04-01 10:24:31 +01:00
kvm arm64: KVM: use ID map with increased VA range if required 2015-03-23 11:35:29 +00:00
lib arm64: __clear_user: handle exceptions on strb 2014-11-13 15:21:26 +00:00
mm arm64: mm: increase VA range of identity map 2015-03-23 11:35:29 +00:00
net arm64: bpf: lift restriction on last instruction 2014-12-03 18:04:09 +00:00
xen arm: xen: implement multicall hypercall support. 2014-04-24 13:09:46 +01:00
Kconfig arm64: errata: add workaround for cortex-a53 erratum #845719 2015-04-01 10:24:31 +01:00
Kconfig.debug arm64: add better page protections to arm64 2015-01-22 14:54:29 +00:00
Makefile arm64: Adjust EFI libstub object include logic 2015-03-17 16:59:47 +00:00