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Sean Christopherson 87aa264cd8 KVM: selftests: Randomly force emulation on x86 writes from guest code 
Override vcpu_arch_put_guest() to randomly force emulation on supported
accesses.  Force emulation of LOCK CMPXCHG as well as a regular MOV to
stress KVM's emulation of atomic accesses, which has a unique path in
KVM's emulator.

Arbitrarily give all the decisions 50/50 odds; absent much, much more
sophisticated infrastructure for generating random numbers, it's highly
unlikely that doing more than a coin flip with affect selftests' ability
to find KVM bugs.

This is effectively a regression test for commit 910c57dfa4 ("KVM: x86:
Mark target gfn of emulated atomic instruction as dirty").

Link: https://lore.kernel.org/r/20240314185459.2439072-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
History 2024-04-29 12:50:43 -07:00
..
accounting delayacct: track delays from IRQ/SOFTIRQ 2023-04-18 16:39:34 -07:00
arch LoongArch changes for v6.9 2024-03-22 10:22:45 -07:00
bootconfig bootconfig: Fix testcase to increase max node 2023-03-22 01:00:28 +09:00
bpf libbpf, selftests/bpf: Adjust libbpf, bpftool, selftests to match LLVM 2024-03-15 14:24:00 -07:00
build perf: build: introduce the libcapstone 2024-02-20 18:06:25 -08:00
certs tools/certs: Add print-cert-tbs-hash.sh 2022-05-23 18:47:49 +03:00
cgroup samples: introduce new samples subdir for cgroup 2023-12-10 16:51:54 -08:00
counter tools/counter: Remove unneeded semicolon 2023-12-20 11:43:31 -05:00
crypto crypto: ccp - Update return values for some unit tests 2024-02-24 08:41:20 +08:00
debugging tools: Add new "test" taint to kernel-chktaint 2022-09-07 14:51:12 -06:00
firewire treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
firmware Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
gpio tools: gpio: fix debounce_period_us output of lsgpio 2023-05-11 10:56:24 +02:00
hv hv/hv_kvp_daemon: Some small fixes for handling NM keyfiles 2023-11-10 23:27:46 +00:00
iio tools: iio: replace seekdir() in iio_generic_buffer 2024-01-23 22:06:56 +00:00
include tools/resolve_btfids: fix build with musl libc 2024-03-28 18:58:29 -07:00
kvm/kvm_stat tools/kvm_stat: use canonical ftrace path 2023-03-29 06:52:08 -04:00
laptop change email address for Pali Rohár 2020-04-10 15:36:22 -07:00
leds .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
lib bpf-for-netdev 2024-03-26 12:55:18 +01:00
memory-model LKMM scripting updates for v6.4 2023-04-24 12:02:25 -07:00
mm tools/mm: add thpmaps script to dump THP usage info 2024-02-22 10:24:38 -08:00
net/ynl tools: ynl: fix setting presence bits in simple nests 2024-03-22 17:54:38 -07:00
objtool objtool: Fix compile failure when using the x32 compiler 2024-03-30 22:12:37 +01:00
pci kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
pcmcia .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
perf RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
power linux-cpupower-6.9-rc1 2024-03-07 21:02:51 +01:00
rcu tools: rcu: Add usage function and check for argument 2023-03-11 18:10:17 -08:00
scripts treewide: remove meaningless assignments in Makefiles 2024-02-23 14:19:07 -08:00
spi spi: spidev_test Add three missing spi mode bits 2023-05-30 15:20:12 +01:00
testing KVM: selftests: Randomly force emulation on x86 writes from guest code 2024-04-29 12:50:43 -07:00
thermal tools/thermal/tmon: Fix compilation warning for wrong format 2024-01-02 09:33:19 +01:00
time treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
tracing tools/rtla: Add -U/--user-load option to timerlat 2024-03-20 05:39:06 +01:00
usb usbip: Use _FORTIFY_SOURCE=2 instead of (implicitly) =1 2023-05-29 15:11:30 +01:00
verification tools/verification: Use tools/build makefiles on rv 2024-03-20 05:39:06 +01:00
virtio tools: virtio: introduce vhost_net_test 2024-03-05 11:38:14 +01:00
wmi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
workqueue workqueue: Implement BH workqueues to eventually replace tasklets 2024-02-04 11:28:06 -10:00
Makefile tools/Makefile: remove cgroup target 2024-03-26 11:07:21 -07:00