linux/arch/arm64
Raghavendra Rao Ananta 8ce8a6fce9 KVM: arm64: Trim guest debug exception handling
The switch-case for handling guest debug exception covers
all the debug exception classes, but functionally, doesn't
do anything with them other than ESR_ELx_EC_WATCHPT_LOW.
Moreover, even though handled well, the 'default' case
could be confusing from a security point of view, stating
that the guests' actions can potentially flood the syslog.
But in reality, the code is unreachable.

Hence, trim down the function to only handle the case with
ESR_ELx_EC_WATCHPT_LOW with a simple 'if' check.

Suggested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210823223940.1878930-1-rananta@google.com
2021-08-26 11:33:32 +01:00
..
boot Networking fixes for 5.14-rc4, including fixes from bpf, can, WiFi (mac80211) 2021-07-30 16:01:36 -07:00
configs Additional Qualcomm ARM64 defconfig udpate for v5.14 2021-06-23 19:01:58 -07:00
crypto crypto: arm64 - use a pattern rule for generating *.S files 2021-05-14 19:07:54 +08:00
include Merge branch arm64/for-next/sysreg into kvm-arm64/misc-5.15 2021-08-20 11:49:23 +01:00
kernel arm64: smccc: Save lr before calling __arm_smccc_sve_check() 2021-07-21 11:23:25 +01:00
kvm KVM: arm64: Trim guest debug exception handling 2021-08-26 11:33:32 +01:00
lib arm64: Avoid premature usercopy failure 2021-07-15 17:29:14 +01:00
mm Revert "mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge" 2021-07-21 11:28:09 +01:00
net bpf: Introduce BPF nospec instruction for mitigating Spectre v4 2021-07-29 00:20:56 +02:00
tools arm64: Allow mismatched 32-bit EL0 support 2021-06-11 13:25:40 +01:00
xen
Kbuild bpf: Fix BPF_JIT kconfig symbol dependency 2021-05-20 23:48:37 +02:00
Kconfig arm64: Restrict ARM64_BTI_KERNEL to clang 12.0.0 and newer 2021-07-13 16:31:31 +01:00
Kconfig.debug
Kconfig.platforms Merge branch 'arm/fixes' into arm/soc 2021-07-09 10:46:02 -07:00
Makefile Kbuild updates for v5.14 2021-07-10 11:01:38 -07:00