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From: Alexandru Elisei <alexandru.elisei@arm.com>
To: maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com,
	linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu
Subject: [PATCH 2/2] KVM/arm64: Print sysreg table name when table is not sorted
Date: Mon, 25 Apr 2022 17:39:04 +0100	[thread overview]
Message-ID: <20220425163904.859195-4-alexandru.elisei@arm.com> (raw)
In-Reply-To: <20220425163904.859195-1-alexandru.elisei@arm.com>

When a sysreg table entry is out-of-order, KVM attempts to print the
address of the table:

[    0.143881] kvm [1]: sys_reg table (____ptrval____) out of order (0)

Printing the name of the table instead of a pointer is more helpful in this
case:

[    0.143881] kvm [1]: sys_reg table sys_reg_descs out of order (0)

Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
---
 arch/arm64/kvm/sys_regs.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 57302048afd0..7b62a2daf056 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2188,18 +2188,18 @@ static const struct sys_reg_desc cp15_64_regs[] = {
 };
 
 static bool check_sysreg_table(const struct sys_reg_desc *table, unsigned int n,
-			       bool is_32)
+			       const char *table_name, bool is_32)
 {
 	unsigned int i;
 
 	for (i = 0; i < n; i++) {
 		if (!is_32 && table[i].reg && !table[i].reset) {
-			kvm_err("sys_reg table %p entry %d lacks reset\n", table, i);
+			kvm_err("sys_reg table %s entry %d lacks reset\n", table_name, i);
 			return false;
 		}
 
 		if (i && cmp_sys_reg(&table[i-1], &table[i]) >= 0) {
-			kvm_err("sys_reg table %p out of order (%d)\n", table, i - 1);
+			kvm_err("sys_reg table %s out of order (%d)\n", table_name, i - 1);
 			return false;
 		}
 	}
@@ -2866,12 +2866,14 @@ int kvm_sys_reg_table_init(void)
 	struct sys_reg_desc clidr;
 
 	/* Make sure tables are unique and in order. */
-	valid &= check_sysreg_table(sys_reg_descs, ARRAY_SIZE(sys_reg_descs), false);
-	valid &= check_sysreg_table(cp14_regs, ARRAY_SIZE(cp14_regs), true);
-	valid &= check_sysreg_table(cp14_64_regs, ARRAY_SIZE(cp14_64_regs), true);
-	valid &= check_sysreg_table(cp15_regs, ARRAY_SIZE(cp15_regs), true);
-	valid &= check_sysreg_table(cp15_64_regs, ARRAY_SIZE(cp15_64_regs), true);
-	valid &= check_sysreg_table(invariant_sys_regs, ARRAY_SIZE(invariant_sys_regs), false);
+	valid &= check_sysreg_table(sys_reg_descs, ARRAY_SIZE(sys_reg_descs),
+				    "sys_reg_descs", false);
+	valid &= check_sysreg_table(cp14_regs, ARRAY_SIZE(cp14_regs), "cp14_regs", true);
+	valid &= check_sysreg_table(cp14_64_regs, ARRAY_SIZE(cp14_64_regs), "cp14_64_regs", true);
+	valid &= check_sysreg_table(cp15_regs, ARRAY_SIZE(cp15_regs), "cp15_regs", true);
+	valid &= check_sysreg_table(cp15_64_regs, ARRAY_SIZE(cp15_64_regs), "cp15_64_regs", true);
+	valid &= check_sysreg_table(invariant_sys_regs, ARRAY_SIZE(invariant_sys_regs),
+				    "invariant_sys_regs", false);
 
 	if (!valid)
 		return -EINVAL;
-- 
2.36.0

_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm

WARNING: multiple messages have this Message-ID (diff)
From: Alexandru Elisei <alexandru.elisei@arm.com>
To: maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com,
	linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu
Subject: [PATCH 2/2] KVM/arm64: Print sysreg table name when table is not sorted
Date: Mon, 25 Apr 2022 17:39:04 +0100	[thread overview]
Message-ID: <20220425163904.859195-4-alexandru.elisei@arm.com> (raw)
In-Reply-To: <20220425163904.859195-1-alexandru.elisei@arm.com>

When a sysreg table entry is out-of-order, KVM attempts to print the
address of the table:

[    0.143881] kvm [1]: sys_reg table (____ptrval____) out of order (0)

Printing the name of the table instead of a pointer is more helpful in this
case:

[    0.143881] kvm [1]: sys_reg table sys_reg_descs out of order (0)

Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
---
 arch/arm64/kvm/sys_regs.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 57302048afd0..7b62a2daf056 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2188,18 +2188,18 @@ static const struct sys_reg_desc cp15_64_regs[] = {
 };
 
 static bool check_sysreg_table(const struct sys_reg_desc *table, unsigned int n,
-			       bool is_32)
+			       const char *table_name, bool is_32)
 {
 	unsigned int i;
 
 	for (i = 0; i < n; i++) {
 		if (!is_32 && table[i].reg && !table[i].reset) {
-			kvm_err("sys_reg table %p entry %d lacks reset\n", table, i);
+			kvm_err("sys_reg table %s entry %d lacks reset\n", table_name, i);
 			return false;
 		}
 
 		if (i && cmp_sys_reg(&table[i-1], &table[i]) >= 0) {
-			kvm_err("sys_reg table %p out of order (%d)\n", table, i - 1);
+			kvm_err("sys_reg table %s out of order (%d)\n", table_name, i - 1);
 			return false;
 		}
 	}
@@ -2866,12 +2866,14 @@ int kvm_sys_reg_table_init(void)
 	struct sys_reg_desc clidr;
 
 	/* Make sure tables are unique and in order. */
-	valid &= check_sysreg_table(sys_reg_descs, ARRAY_SIZE(sys_reg_descs), false);
-	valid &= check_sysreg_table(cp14_regs, ARRAY_SIZE(cp14_regs), true);
-	valid &= check_sysreg_table(cp14_64_regs, ARRAY_SIZE(cp14_64_regs), true);
-	valid &= check_sysreg_table(cp15_regs, ARRAY_SIZE(cp15_regs), true);
-	valid &= check_sysreg_table(cp15_64_regs, ARRAY_SIZE(cp15_64_regs), true);
-	valid &= check_sysreg_table(invariant_sys_regs, ARRAY_SIZE(invariant_sys_regs), false);
+	valid &= check_sysreg_table(sys_reg_descs, ARRAY_SIZE(sys_reg_descs),
+				    "sys_reg_descs", false);
+	valid &= check_sysreg_table(cp14_regs, ARRAY_SIZE(cp14_regs), "cp14_regs", true);
+	valid &= check_sysreg_table(cp14_64_regs, ARRAY_SIZE(cp14_64_regs), "cp14_64_regs", true);
+	valid &= check_sysreg_table(cp15_regs, ARRAY_SIZE(cp15_regs), "cp15_regs", true);
+	valid &= check_sysreg_table(cp15_64_regs, ARRAY_SIZE(cp15_64_regs), "cp15_64_regs", true);
+	valid &= check_sysreg_table(invariant_sys_regs, ARRAY_SIZE(invariant_sys_regs),
+				    "invariant_sys_regs", false);
 
 	if (!valid)
 		return -EINVAL;
-- 
2.36.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2022-04-25 16:39 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-25 16:39 [PATCH 0/2] KVM/arm64: sys_reg_table_init() small improvements Alexandru Elisei
2022-04-25 16:39 ` Alexandru Elisei
2022-04-25 16:39 ` [PATCH 1/2] KVM/arm64: Don't BUG_ON() if emulated register table is unsorted Alexandru Elisei
2022-04-25 16:39   ` Alexandru Elisei
2022-04-25 16:39 ` [PATCH 2/2] KVM/arm64: Print emulated register table name when it " Alexandru Elisei
2022-04-25 16:39   ` Alexandru Elisei
2022-04-26 21:18   ` Marc Zyngier
2022-04-26 21:18     ` Marc Zyngier
2022-04-27 10:21     ` Alexandru Elisei
2022-04-27 10:21       ` Alexandru Elisei
2022-04-27 20:56       ` Marc Zyngier
2022-04-27 20:56         ` Marc Zyngier
2022-04-25 16:39 ` Alexandru Elisei [this message]
2022-04-25 16:39   ` [PATCH 2/2] KVM/arm64: Print sysreg table name when table is not sorted Alexandru Elisei
2022-04-26  9:04   ` Alexandru Elisei
2022-04-26  9:04     ` Alexandru Elisei

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