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9d41053e8d
linux-next/arch/arm64
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Marc Zyngier 9d41053e8d arm64: Add missing ISB after invalidating TLB in __primary_switch 
Although there has been a bit of back and forth on the subject, it
appears that invalidating TLBs requires an ISB instruction when FEAT_ETS
is not implemented by the CPU.

From the bible:

  | In an implementation that does not implement FEAT_ETS, a TLB
  | maintenance instruction executed by a PE, PEx, can complete at any
  | time after it is issued, but is only guaranteed to be finished for a
  | PE, PEx, after the execution of DSB by the PEx followed by a Context
  | synchronization event

Add the missing ISB in __primary_switch, just in case.

Fixes: 3c5e9f238b ("arm64: head.S: move KASLR processing out of __enable_mmu()")
Suggested-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20210224093738.3629662-3-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2021-02-24 11:35:19 +00:00
..
boot ARM: SoC fixes for v5.11 2021-01-08 14:13:54 -08:00
configs ARM: device tree updates for 5.11 2020-12-16 16:27:35 -08:00
crypto crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
include arm64 module: set plt* section addresses to 0x0 2021-02-19 17:59:59 +00:00
kernel arm64: Add missing ISB after invalidating TLB in __primary_switch 2021-02-24 11:35:19 +00:00
kvm KVM: arm64: make the hyp vector table entries local 2021-02-24 11:20:43 +00:00
lib arm64: mte: add in-kernel MTE helpers 2020-12-22 12:55:07 -08:00
mm arm64/mm: Fixed some coding style issues 2021-02-23 10:40:54 +00:00
net arm64: bpf: Fix branch offset in JIT 2020-09-17 12:05:36 +01:00
xen arm64: xen: Use modern annotations for assembly functions 2020-01-09 16:09:42 +00:00
Kbuild
Kconfig Merge branch 'for-next/misc' into for-next/core 2021-02-12 15:07:34 +00:00
Kconfig.debug arm64: remove TEXT_OFFSET randomization 2020-06-15 13:10:59 +01:00
Kconfig.platforms ARM: device tree updates for 5.11 2020-12-16 16:27:35 -08:00
Makefile arm64: do not descend to vdso directories twice 2021-01-20 12:18:46 +00:00