From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 82648261F6 for ; Fri, 26 May 2023 14:33:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3FB0BC4339C; Fri, 26 May 2023 14:33:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1685111635; bh=UaDqzpeXMxTsA0h1VeMgRA4blxON31O7kP8OlVYUq/E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YM7MX8Og8fTJWm0KWs/I7dne4K44omL0VLbEekfs24gCmx9xA4Mk2SjugXCspyakv LLi80+GB4edTIHojuCkYRwVpKm0ToLME9mt3vj5p5xOytsOsbAadmZNt4sn72OqB6U llDKyzNhvxnzemQqU7FG8OTDdt8jqH1vnqz8+vQDLiKnxrasWtPap7dkD9kRG71+uj 0r6/EbZ2RVJJiLpjwlbrfCjhHVzEXiX1Q4h706Q5oJEdVG0i/V0rkuL2UGxZWYvjre /4IpGBV7jGvCjCFUWJellPhYwmgGr9haAyyCBejFGRStaHW3MTCL28FF1eBsKS6tH5 /PyI/fRSxuBQg== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1q2YVt-000aHS-AY; Fri, 26 May 2023 15:33:53 +0100 From: Marc Zyngier To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Quentin Perret , Will Deacon , Fuad Tabba Subject: [PATCH v2 08/17] KVM: arm64: Remove alternatives from sysreg accessors in VHE hypervisor context Date: Fri, 26 May 2023 15:33:39 +0100 Message-Id: <20230526143348.4072074-9-maz@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230526143348.4072074-1-maz@kernel.org> References: <20230526143348.4072074-1-maz@kernel.org> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, qperret@google.com, will@kernel.org, tabba@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false In the VHE hypervisor code, we should be using the remapped VHE accessors, no ifs, no buts. No need to generate any alternative. Signed-off-by: Marc Zyngier --- arch/arm64/include/asm/kvm_hyp.h | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/arch/arm64/include/asm/kvm_hyp.h b/arch/arm64/include/asm/kvm_hyp.h index bdd9cf546d95..fea04eb25cb4 100644 --- a/arch/arm64/include/asm/kvm_hyp.h +++ b/arch/arm64/include/asm/kvm_hyp.h @@ -16,6 +16,23 @@ DECLARE_PER_CPU(struct kvm_cpu_context, kvm_hyp_ctxt); DECLARE_PER_CPU(unsigned long, kvm_hyp_vector); DECLARE_PER_CPU(struct kvm_nvhe_init_params, kvm_init_params); +/* + * Unified accessors for registers that have a different encoding + * between VHE and non-VHE. They must be specified without their "ELx" + * encoding, but with the SYS_ prefix, as defined in asm/sysreg.h. + */ + +#if defined(__KVM_VHE_HYPERVISOR__) + +#define read_sysreg_el0(r) read_sysreg_s(r##_EL02) +#define write_sysreg_el0(v,r) write_sysreg_s(v, r##_EL02) +#define read_sysreg_el1(r) read_sysreg_s(r##_EL12) +#define write_sysreg_el1(v,r) write_sysreg_s(v, r##_EL12) +#define read_sysreg_el2(r) read_sysreg_s(r##_EL1) +#define write_sysreg_el2(v,r) write_sysreg_s(v, r##_EL1) + +#else // !__KVM_VHE_HYPERVISOR__ + #define read_sysreg_elx(r,nvh,vh) \ ({ \ u64 reg; \ @@ -35,12 +52,6 @@ DECLARE_PER_CPU(struct kvm_nvhe_init_params, kvm_init_params); : : "rZ" (__val)); \ } while (0) -/* - * Unified accessors for registers that have a different encoding - * between VHE and non-VHE. They must be specified without their "ELx" - * encoding, but with the SYS_ prefix, as defined in asm/sysreg.h. - */ - #define read_sysreg_el0(r) read_sysreg_elx(r, _EL0, _EL02) #define write_sysreg_el0(v,r) write_sysreg_elx(v, r, _EL0, _EL02) #define read_sysreg_el1(r) read_sysreg_elx(r, _EL1, _EL12) @@ -48,6 +59,8 @@ DECLARE_PER_CPU(struct kvm_nvhe_init_params, kvm_init_params); #define read_sysreg_el2(r) read_sysreg_elx(r, _EL2, _EL1) #define write_sysreg_el2(v,r) write_sysreg_elx(v, r, _EL2, _EL1) +#endif // __KVM_VHE_HYPERVISOR__ + /* * Without an __arch_swab32(), we fall back to ___constant_swab32(), but the * static inline can allow the compiler to out-of-line this. KVM always wants -- 2.34.1