linux-kernel - [PATCH RFC v3 08/27] KVM: arm64: Move SVE state access macros after feature test macros

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]

Message-Id: <20241220-kvm-arm64-sme-v3-8-05b018c1ffeb@kernel.org>
Date: Fri, 20 Dec 2024 16:46:33 +0000
From: Mark Brown <broonie@...nel.org>
To: Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>, 
 Joey Gouly <joey.gouly@....com>, Catalin Marinas <catalin.marinas@....com>, 
 Suzuki K Poulose <suzuki.poulose@....com>, Will Deacon <will@...nel.org>, 
 Paolo Bonzini <pbonzini@...hat.com>, Jonathan Corbet <corbet@....net>, 
 Shuah Khan <shuah@...nel.org>
Cc: Dave Martin <Dave.Martin@....com>, Fuad Tabba <tabba@...gle.com>, 
 linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, kvm@...r.kernel.org, 
 linux-doc@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 Mark Brown <broonie@...nel.org>
Subject: [PATCH RFC v3 08/27] KVM: arm64: Move SVE state access macros
 after feature test macros

In preparation for SME support move the macros used to access SVE state
after the feature test macros, we will need to test for SME subfeatures to
determine the size of the SME state.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
 arch/arm64/include/asm/kvm_host.h | 46 +++++++++++++++++++--------------------
 1 file changed, 23 insertions(+), 23 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index fca81ede6140c0ee7d03cb6ca8f5eead45b87033..97b617606221e8c11fd2b55d9636848d8453209f 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -934,29 +934,6 @@ struct kvm_vcpu_arch {
 #define IN_WFI			__vcpu_single_flag(sflags, BIT(7))
 
 
-/* Pointer to the vcpu's SVE FFR for sve_{save,load}_state() */
-#define vcpu_sve_pffr(vcpu) (kern_hyp_va((vcpu)->arch.sve_state) +	\
-			     sve_ffr_offset((vcpu)->arch.sve_max_vl))
-
-#define vcpu_sve_max_vq(vcpu)	sve_vq_from_vl((vcpu)->arch.sve_max_vl)
-
-#define vcpu_sve_zcr_elx(vcpu)						\
-	(unlikely(is_hyp_ctxt(vcpu)) ? ZCR_EL2 : ZCR_EL1)
-
-#define vcpu_sve_state_size(vcpu) ({					\
-	size_t __size_ret;						\
-	unsigned int __vcpu_vq;						\
-									\
-	if (WARN_ON(!sve_vl_valid((vcpu)->arch.sve_max_vl))) {		\
-		__size_ret = 0;						\
-	} else {							\
-		__vcpu_vq = vcpu_sve_max_vq(vcpu);			\
-		__size_ret = SVE_SIG_REGS_SIZE(__vcpu_vq);		\
-	}								\
-									\
-	__size_ret;							\
-})
-
 #define KVM_GUESTDBG_VALID_MASK (KVM_GUESTDBG_ENABLE | \
 				 KVM_GUESTDBG_USE_SW_BP | \
 				 KVM_GUESTDBG_USE_HW | \
@@ -992,6 +969,29 @@ struct kvm_vcpu_arch {
 
 #define vcpu_gp_regs(v)		(&(v)->arch.ctxt.regs)
 
+/* Pointer to the vcpu's SVE FFR for sve_{save,load}_state() */
+#define vcpu_sve_pffr(vcpu) (kern_hyp_va((vcpu)->arch.sve_state) +	\
+			     sve_ffr_offset((vcpu)->arch.sve_max_vl))
+
+#define vcpu_sve_max_vq(vcpu)	sve_vq_from_vl((vcpu)->arch.sve_max_vl)
+
+#define vcpu_sve_zcr_elx(vcpu)						\
+	(unlikely(is_hyp_ctxt(vcpu)) ? ZCR_EL2 : ZCR_EL1)
+
+#define vcpu_sve_state_size(vcpu) ({					\
+	size_t __size_ret;						\
+	unsigned int __vcpu_vq;						\
+									\
+	if (WARN_ON(!sve_vl_valid((vcpu)->arch.sve_max_vl))) {		\
+		__size_ret = 0;						\
+	} else {							\
+		__vcpu_vq = vcpu_sve_max_vq(vcpu);			\
+		__size_ret = SVE_SIG_REGS_SIZE(__vcpu_vq);		\
+	}								\
+									\
+	__size_ret;							\
+})
+
 /*
  * Only use __vcpu_sys_reg/ctxt_sys_reg if you know you want the
  * memory backed version of a register, and not the one most recently

-- 
2.39.5