diff --git a/hw/xive.c b/hw/xive.c
index 9148c5f653e2..d6628a09bae0 100644
--- a/hw/xive.c
+++ b/hw/xive.c
@@ -1623,6 +1623,8 @@ static bool xive_config_init(struct xive *x)
 #endif
 	val |= PC_TCTXT_CHIPID_OVERRIDE;
 	val |= PC_TCTXT_CFG_TARGET_EN;
+	/* Disable pressure relief as we hijack the field in the VPs */
+	val &= ~PC_TCTXT_CFG_STORE_ACK;
 	val = SETFIELD(PC_TCTXT_CHIPID, val, x->block_id);
 	xive_regw(x, PC_TCTXT_CFG, val);
 	xive_dbg(x, "PC_TCTXT_CFG=%016llx\n", val);
diff --git a/include/xive.h b/include/xive.h
index 860373c912f1..70f6499f8c02 100644
--- a/include/xive.h
+++ b/include/xive.h
@@ -75,6 +75,7 @@
 #define PC_TCTXT_CFG		0x400
 #define  PC_TCTXT_CFG_BLKGRP_EN		PPC_BIT(0)
 #define  PC_TCTXT_CFG_TARGET_EN		PPC_BIT(1)
+#define  PC_TCTXT_CFG_STORE_ACK		PPC_BIT(3)
 #define  PC_TCTXT_CFG_HARD_CHIPID_BLK	PPC_BIT(8)
 #define  PC_TCTXT_CHIPID_OVERRIDE	PPC_BIT(9)
 #define  PC_TCTXT_CHIPID		PPC_BITMASK(12,15)