[PATCH] memorder: Reconcile W+RWC propagation path with litmus dataflow

Align the Section 15.3.7.2 propagation narrative with Listing 15.18 by correcting the path to P2->z->P1. This removes a variable-path contradiction in the counter-temporal explanation and restores argument traceability.

Signed-off-by: Kunwu Chan <[email protected]>
---
 memorder/memorder.tex | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/memorder/memorder.tex b/memorder/memorder.tex
index 16a569d1..2357e7ea 100644
--- a/memorder/memorder.tex
+++ b/memorder/memorder.tex
@@ -2755,8 +2755,8 @@ This situation might seem completely counter-intuitive, but keep
 in mind that the speed of light is finite and computers are of
 non-zero size.
 It therefore takes time for the effect of the \co{P2()}'s store to
-\co{x} to propagate to \co{P1()}, which in turn means that it is possible
-that \co{P1()}'s read from \co{x} happens much later in time, but
+\co{z} to propagate to \co{P1()}, which in turn means that it is possible
+that \co{P1()}'s read from \co{z} happens much later in time, but
 nevertheless still sees the old value of zero.
 This situation is depicted in
 \cref{fig:memorder:Load-to-Store is Counter-Temporal}:
-- 
2.25.1