linux-kernel - [PATCH v2 3/7] arm64/sysreg: Standardise naming of bitfield constants in OSL[AS]R

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 23 May 2023 19:36:00 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        Oliver Upton <oliver.upton@...ux.dev>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kvmarm@...ts.linux.dev, Mark Brown <broonie@...nel.org>,
        Shaoqin Huang <shahuang@...hat.com>
Subject: [PATCH v2 3/7] arm64/sysreg: Standardise naming of bitfield
 constants in OSL[AS]R_EL1

Our standard scheme for naming the constants for bitfields in system
registers includes _ELx in the name but not the SYS_, update the
constants for OSL[AS]R_EL1 to follow this convention.

Reviewed-by: Shaoqin Huang <shahuang@...hat.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
---
 arch/arm64/include/asm/kvm_host.h |  2 +-
 arch/arm64/include/asm/sysreg.h   | 10 +++++-----
 arch/arm64/kvm/sys_regs.c         | 10 +++++-----
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 7e7e19ef6993..e759e6b0cd02 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -1031,7 +1031,7 @@ void kvm_arm_clear_debug(struct kvm_vcpu *vcpu);
 void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu);
 
 #define kvm_vcpu_os_lock_enabled(vcpu)		\
-	(!!(__vcpu_sys_reg(vcpu, OSLSR_EL1) & SYS_OSLSR_OSLK))
+	(!!(__vcpu_sys_reg(vcpu, OSLSR_EL1) & OSLSR_EL1_OSLK))
 
 int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu,
 			       struct kvm_device_attr *attr);
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index 95de1aaee0e9..979975c8be2c 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -144,13 +144,13 @@
 #define SYS_MDRAR_EL1			sys_reg(2, 0, 1, 0, 0)
 
 #define SYS_OSLAR_EL1			sys_reg(2, 0, 1, 0, 4)
-#define SYS_OSLAR_OSLK			BIT(0)
+#define OSLAR_EL1_OSLK			BIT(0)
 
 #define SYS_OSLSR_EL1			sys_reg(2, 0, 1, 1, 4)
-#define SYS_OSLSR_OSLM_MASK		(BIT(3) | BIT(0))
-#define SYS_OSLSR_OSLM_NI		0
-#define SYS_OSLSR_OSLM_IMPLEMENTED	BIT(3)
-#define SYS_OSLSR_OSLK			BIT(1)
+#define OSLSR_EL1_OSLM_MASK		(BIT(3) | BIT(0))
+#define OSLSR_EL1_OSLM_NI		0
+#define OSLSR_EL1_OSLM_IMPLEMENTED	BIT(3)
+#define OSLSR_EL1_OSLK			BIT(1)
 
 #define SYS_OSDLR_EL1			sys_reg(2, 0, 1, 3, 4)
 #define SYS_DBGPRCR_EL1			sys_reg(2, 0, 1, 4, 4)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 71b12094d613..e834d8897843 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -388,9 +388,9 @@ static bool trap_oslar_el1(struct kvm_vcpu *vcpu,
 		return read_from_write_only(vcpu, p, r);
 
 	/* Forward the OSLK bit to OSLSR */
-	oslsr = __vcpu_sys_reg(vcpu, OSLSR_EL1) & ~SYS_OSLSR_OSLK;
-	if (p->regval & SYS_OSLAR_OSLK)
-		oslsr |= SYS_OSLSR_OSLK;
+	oslsr = __vcpu_sys_reg(vcpu, OSLSR_EL1) & ~OSLSR_EL1_OSLK;
+	if (p->regval & OSLAR_EL1_OSLK)
+		oslsr |= OSLSR_EL1_OSLK;
 
 	__vcpu_sys_reg(vcpu, OSLSR_EL1) = oslsr;
 	return true;
@@ -414,7 +414,7 @@ static int set_oslsr_el1(struct kvm_vcpu *vcpu, const struct sys_reg_desc *rd,
 	 * The only modifiable bit is the OSLK bit. Refuse the write if
 	 * userspace attempts to change any other bit in the register.
 	 */
-	if ((val ^ rd->val) & ~SYS_OSLSR_OSLK)
+	if ((val ^ rd->val) & ~OSLSR_EL1_OSLK)
 		return -EINVAL;
 
 	__vcpu_sys_reg(vcpu, rd->reg) = val;
@@ -1781,7 +1781,7 @@ static const struct sys_reg_desc sys_reg_descs[] = {
 	{ SYS_DESC(SYS_MDRAR_EL1), trap_raz_wi },
 	{ SYS_DESC(SYS_OSLAR_EL1), trap_oslar_el1 },
 	{ SYS_DESC(SYS_OSLSR_EL1), trap_oslsr_el1, reset_val, OSLSR_EL1,
-		SYS_OSLSR_OSLM_IMPLEMENTED, .set_user = set_oslsr_el1, },
+		OSLSR_EL1_OSLM_IMPLEMENTED, .set_user = set_oslsr_el1, },
 	{ SYS_DESC(SYS_OSDLR_EL1), trap_raz_wi },
 	{ SYS_DESC(SYS_DBGPRCR_EL1), trap_raz_wi },
 	{ SYS_DESC(SYS_DBGCLAIMSET_EL1), trap_raz_wi },

-- 
2.30.2