OpenCloudOS-Kernel/tools
Peter Zijlstra a149180fbc x86: Add magic AMD return-thunk
Note: needs to be in a section distinct from Retpolines such that the
Retpoline RET substitution cannot possibly use immediate jumps.

ORC unwinding for zen_untrain_ret() and __x86_return_thunk() is a
little tricky but works due to the fact that zen_untrain_ret() doesn't
have any stack ops and as such will emit a single ORC entry at the
start (+0x3f).

Meanwhile, unwinding an IP, including the __x86_return_thunk() one
(+0x40) will search for the largest ORC entry smaller or equal to the
IP, these will find the one ORC entry (+0x3f) and all works.

  [ Alexandre: SVM part. ]
  [ bp: Build fix, massages. ]

Suggested-by: Andrew Cooper <Andrew.Cooper3@citrix.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
2022-06-27 10:33:59 +02:00
..
accounting delayacct: track delays from write-protect copy 2022-06-01 15:55:25 -07:00
arch tools headers UAPI: Synch KVM's svm.h header with the kernel 2022-06-26 12:32:55 -03:00
bootconfig
bpf bpftool: Use sysfs vmlinux when dumping BTF by ID 2022-05-13 16:07:53 -07:00
build perf build: Stop using __weak bpf_map_create() to handle older libbpf versions 2022-05-26 12:36:56 -03:00
certs tools/certs: Add print-cert-tbs-hash.sh 2022-05-23 18:47:49 +03:00
cgroup tools/cgroup/slabinfo: update to work with struct slab 2022-02-21 11:34:49 +01:00
counter kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
debugging
edid
firewire
firmware
gpio tools: gpio: Add new hardware clock type 2022-05-04 11:06:14 +02:00
hv kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
iio Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
include tools include UAPI: Sync linux/vhost.h with the kernel sources 2022-06-26 12:32:55 -03:00
io_uring
kvm/kvm_stat tools/kvm_stat: fix display of error when multiple processes are found 2022-06-15 08:14:20 -04:00
laptop
leds
lib libperf evsel: Open shouldn't leak fd on failure 2022-06-19 10:41:43 -03:00
memory-model tools/memory-model/README: Update klitmus7 compat table 2022-05-03 10:12:48 -07:00
objtool x86: Add magic AMD return-thunk 2022-06-27 10:33:59 +02:00
pci kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
pcmcia
perf perf stat: Enable ignore_missing_thread 2022-06-26 12:32:55 -03:00
power Power management updates for 5.19-rc1 2022-05-24 16:04:25 -07:00
rcu
scripts Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
spi kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
testing ARM64: 2022-06-24 12:17:47 -07:00
thermal tools/thermal: remove unneeded semicolon 2022-05-19 12:11:52 +02:00
time
tracing rtla: Remove procps-ng dependency 2022-05-26 15:20:46 -04:00
usb testusb: Fix warning comparing pointer to 0 2022-04-26 13:32:49 +02:00
virtio tools/virtio: compile with -pthread 2022-03-28 16:52:59 -04:00
vm mm/page-flags: reuse PG_mappedtodisk as PG_anon_exclusive for PageAnon() pages 2022-05-09 18:20:44 -07:00
wmi
Makefile Thermal control updates for 5.19-rc1 2022-05-24 16:19:30 -07:00