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author | Mark Rutland <mark.rutland@arm.com> | 2018-11-09 16:07:10 +0100 |
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committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-12-18 15:10:36 +0100 |
commit | 0d640732dbebed0f10f18526de21652931f0b2f2 (patch) | |
tree | aa9c116f560d604190b904d0a0b966cdae8e6519 /kernel | |
parent | Linux 4.20-rc4 (diff) | |
download | linux-0d640732dbebed0f10f18526de21652931f0b2f2.tar.xz linux-0d640732dbebed0f10f18526de21652931f0b2f2.zip |
arm64: KVM: Skip MMIO insn after emulation
When we emulate an MMIO instruction, we advance the CPU state within
decode_hsr(), before emulating the instruction effects.
Having this logic in decode_hsr() is opaque, and advancing the state
before emulation is problematic. It gets in the way of applying
consistent single-step logic, and it prevents us from being able to fail
an MMIO instruction with a synchronous exception.
Clean this up by only advancing the CPU state *after* the effects of the
instruction are emulated.
Cc: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions