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authorBorislav Petkov <bp@suse.de>2022-02-14 00:03:04 +0300
committerBorislav Petkov <bp@suse.de>2022-02-14 00:03:04 +0300
commitc0f6799de2a08f3860e8c13f85a7b9db51563ee0 (patch)
tree4ef1dde004954a7cc28a508df005c4dfe4d4cb99 /scripts
parent754e0b0e35608ed5206d6a67a791563c631cec07 (diff)
parentb008893b08dcc8c30d756db05c229a1491bcb992 (diff)
downloadlinux-c0f6799de2a08f3860e8c13f85a7b9db51563ee0.tar.xz
Merge tip:locking/core into tip:ras/core
Pick up helpers inlining work in order to address more noinstr fallout in the MCE code. Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/atomic/fallbacks/read_acquire11
-rwxr-xr-xscripts/atomic/fallbacks/set_release7
2 files changed, 16 insertions, 2 deletions
diff --git a/scripts/atomic/fallbacks/read_acquire b/scripts/atomic/fallbacks/read_acquire
index 803ba7561076..a0ea1d26e6b2 100755
--- a/scripts/atomic/fallbacks/read_acquire
+++ b/scripts/atomic/fallbacks/read_acquire
@@ -2,6 +2,15 @@ cat <<EOF
static __always_inline ${ret}
arch_${atomic}_read_acquire(const ${atomic}_t *v)
{
- return smp_load_acquire(&(v)->counter);
+ ${int} ret;
+
+ if (__native_word(${atomic}_t)) {
+ ret = smp_load_acquire(&(v)->counter);
+ } else {
+ ret = arch_${atomic}_read(v);
+ __atomic_acquire_fence();
+ }
+
+ return ret;
}
EOF
diff --git a/scripts/atomic/fallbacks/set_release b/scripts/atomic/fallbacks/set_release
index 86ede759f24e..05cdb7f42477 100755
--- a/scripts/atomic/fallbacks/set_release
+++ b/scripts/atomic/fallbacks/set_release
@@ -2,6 +2,11 @@ cat <<EOF
static __always_inline void
arch_${atomic}_set_release(${atomic}_t *v, ${int} i)
{
- smp_store_release(&(v)->counter, i);
+ if (__native_word(${atomic}_t)) {
+ smp_store_release(&(v)->counter, i);
+ } else {
+ __atomic_release_fence();
+ arch_${atomic}_set(v, i);
+ }
}
EOF