[Qemu-devel] [PATCH v3 06/15] target/arm/cpu: Use div-round-up to determine predicate register array size

From: Andrew Jones <drjones@redhat.com>
To: qemu-devel@nongnu.org, qemu-arm@nongnu.org
Cc: peter.maydell@linaro.org, richard.henderson@linaro.org,
	armbru@redhat.com, eric.auger@redhat.com, imammedo@redhat.com,
	alex.bennee@linaro.org, Dave.Martin@arm.com
Subject: [Qemu-devel] [PATCH v3 06/15] target/arm/cpu: Use div-round-up to determine predicate register array size
Date: Fri,  2 Aug 2019 14:25:31 +0200	[thread overview]
Message-ID: <20190802122540.26385-7-drjones@redhat.com> (raw)
In-Reply-To: <20190802122540.26385-1-drjones@redhat.com>

Unless we're guaranteed to always increase ARM_MAX_VQ by a multiple of
four, then we should use DIV_ROUND_UP to ensure we get an appropriate
array size.

Signed-off-by: Andrew Jones <drjones@redhat.com>
---
 target/arm/cpu.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 94c990cddbd8..a3300f3ee7d7 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -195,7 +195,7 @@ typedef struct ARMVectorReg {
 #ifdef TARGET_AARCH64
 /* In AArch32 mode, predicate registers do not exist at all.  */
 typedef struct ARMPredicateReg {
-    uint64_t p[2 * ARM_MAX_VQ / 8] QEMU_ALIGNED(16);
+    uint64_t p[DIV_ROUND_UP(2 * ARM_MAX_VQ, 8)] QEMU_ALIGNED(16);
 } ARMPredicateReg;
 
 /* In AArch32 mode, PAC keys do not exist at all.  */
-- 
2.20.1


