Xen 4.17.4-pre-patchset-14.17.4-pre-patchset-14.17

Signed-off-by: Tomáš Mózes <hydrapolic@gmail.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/0055-x86-mm-use-block_lock_speculation-in-_mm_write_lock.patch b/0055-x86-mm-use-block_lock_speculation-in-_mm_write_lock.patch
new file mode 100644
index 0000000..719234c
--- /dev/null
+++ b/0055-x86-mm-use-block_lock_speculation-in-_mm_write_lock.patch
@@ -0,0 +1,35 @@
+From a153b8b42e9027ba3057bc7c8bf55e4d71e86ec3 Mon Sep 17 00:00:00 2001
+From: Jan Beulich <jbeulich@suse.com>
+Date: Wed, 27 Mar 2024 12:28:24 +0100
+Subject: [PATCH 55/67] x86/mm: use block_lock_speculation() in
+ _mm_write_lock()
+
+I can only guess that using block_speculation() there was a leftover
+from, earlier on, SPECULATIVE_HARDEN_LOCK depending on
+SPECULATIVE_HARDEN_BRANCH.
+
+Fixes: 197ecd838a2a ("locking: attempt to ensure lock wrappers are always inline")
+Signed-off-by: Jan Beulich <jbeulich@suse.com>
+Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
+master commit: 62018f08708a5ff6ef8fc8ff2aaaac46e5a60430
+master date: 2024-03-18 13:53:37 +0100
+---
+ xen/arch/x86/mm/mm-locks.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/xen/arch/x86/mm/mm-locks.h b/xen/arch/x86/mm/mm-locks.h
+index 3ea2d8eb03..7d6e4d2a7c 100644
+--- a/xen/arch/x86/mm/mm-locks.h
++++ b/xen/arch/x86/mm/mm-locks.h
+@@ -150,7 +150,7 @@ static always_inline void _mm_write_lock(const struct domain *d, mm_rwlock_t *l,
+         _set_lock_level(_lock_level(d, level));
+     }
+     else
+-        block_speculation();
++        block_lock_speculation();
+     l->recurse_count++;
+ }
+ 
+-- 
+2.44.0
+