linux-stable/tools
Raghavendra Rao Ananta 50763f0ac0 selftests: KVM: Handle compiler optimizations in ucall
[ Upstream commit 9e2f6498ef ]

The selftests, when built with newer versions of clang, is found
to have over optimized guests' ucall() function, and eliminating
the stores for uc.cmd (perhaps due to no immediate readers). This
resulted in the userspace side always reading a value of '0', and
causing multiple test failures.

As a result, prevent the compiler from optimizing the stores in
ucall() with WRITE_ONCE().

Suggested-by: Ricardo Koller <ricarkol@google.com>
Suggested-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
Message-Id: <20220615185706.1099208-1-rananta@google.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-11 13:06:45 +02:00
..
accounting
arch tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench mem memcpy' - again 2022-07-25 11:26:56 +02:00
bootconfig tools/bootconfig: Fix tracing_on option checking in ftrace2bconf.sh 2021-09-26 14:08:59 +02:00
bpf tools/resolve_btfids: Do not print any commands when building silently 2022-02-08 18:30:39 +01:00
build tools build: Use $(shell ) instead of `` to get embedded libperl's ccopts 2022-04-13 21:01:10 +02:00
cgroup tools/cgroup/slabinfo.py: updated to work on current kernel 2021-05-07 11:04:31 +02:00
debugging
edid
firewire
firmware
gpio tools: gpio: fix %llu warning in gpio-watch.c 2021-01-27 11:55:20 +01:00
hv
iio
include selftests/bpf: Extend verifier and bpf_sock tests for dst_port loads 2022-08-11 13:06:44 +02:00
io_uring tools/io_uring: fix compile breakage 2020-09-21 07:50:58 -06:00
kvm/kvm_stat tools/kvm_stat: fix display of error when multiple processes are found 2022-08-11 13:06:45 +02:00
laptop
leds
lib libbpf: Fix logic for finding matching program for CO-RE relocation 2022-06-09 10:21:03 +02:00
memory-model tools/memory-model: Expand the cheatsheet.txt notion of relaxed 2020-09-04 11:58:15 -07:00
objtool objtool: Fix elf_create_undef_symbol() endianness 2022-07-25 11:26:56 +02:00
pci
pcmcia
perf perf symbol: Correct address for bss symbols 2022-08-03 12:00:49 +02:00
power tools/power turbostat: fix ICX DRAM power numbers 2022-06-09 10:20:51 +02:00
scripts tools: Allow proper CC/CXX/... override with LLVM=1 in Makefile.include 2021-07-31 08:16:10 +02:00
spi
testing selftests: KVM: Handle compiler optimizations in ucall 2022-08-11 13:06:45 +02:00
thermal/tmon tools/thermal/tmon: Add cross compiling support 2021-09-18 13:40:07 +02:00
time
usb usb: testusb: Fix for showing the connection speed 2021-10-09 14:40:56 +02:00
virtio tools/virtio: compile with -pthread 2022-05-25 09:17:53 +02:00
vm tools/vm/page-types: remove dependency on opt_file for idle page tracking 2021-10-09 14:40:57 +02:00
wmi
Makefile