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d="scan'208";a="3420489" From: Paul Durrant To: Date: Thu, 25 Jul 2019 14:39:17 +0100 Message-ID: <20190725133920.40673-4-paul.durrant@citrix.com> X-Mailer: git-send-email 2.20.1.2.gb21ebb671 In-Reply-To: <20190725133920.40673-1-paul.durrant@citrix.com> References: <20190725133920.40673-1-paul.durrant@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH v2 3/6] x86/hvm/domain: remove the 'hap_enabled' flag X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Andrew Cooper , Paul Durrant , Wei Liu , Jan Beulich , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" The hap_enabled() macro can determine whether the feature is available using the domain 'options'; there is no need for a separate flag. Signed-off-by: Paul Durrant Reviewed-by: Roger Pau Monn=C3=A9 --- Cc: Jan Beulich Cc: Andrew Cooper Cc: Wei Liu Cc: "Roger Pau Monn=C3=A9" v2: - Defer changes to shadow_domain_init() to patch #4 --- xen/arch/x86/domain.c | 7 +------ xen/arch/x86/mm/paging.c | 4 ++-- xen/include/asm-x86/hvm/domain.h | 9 +++------ xen/include/asm-x86/paging.h | 2 +- 4 files changed, 7 insertions(+), 15 deletions(-) diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c index ea55160887..65f47a7627 100644 --- a/xen/arch/x86/domain.c +++ b/xen/arch/x86/domain.c @@ -564,12 +564,7 @@ int arch_domain_create(struct domain *d, HYPERVISOR_COMPAT_VIRT_START(d) =3D is_pv_domain(d) ? __HYPERVISOR_COMPAT_VIRT_START : ~0u; =20 - /* Need to determine if HAP is enabled before initialising paging */ - if ( is_hvm_domain(d) ) - d->arch.hvm.hap_enabled =3D - hvm_hap_supported() && (config->flags & XEN_DOMCTL_CDF_hap); - - if ( (rc =3D paging_domain_init(d, config->flags)) !=3D 0 ) + if ( (rc =3D paging_domain_init(d)) !=3D 0 ) goto fail; paging_initialised =3D true; =20 diff --git a/xen/arch/x86/mm/paging.c b/xen/arch/x86/mm/paging.c index 011089368a..097a27f608 100644 --- a/xen/arch/x86/mm/paging.c +++ b/xen/arch/x86/mm/paging.c @@ -632,7 +632,7 @@ void paging_log_dirty_init(struct domain *d, const stru= ct log_dirty_ops *ops) /* CODE FOR PAGING SUPPORT */ /************************************************/ /* Domain paging struct initialization. */ -int paging_domain_init(struct domain *d, unsigned int domcr_flags) +int paging_domain_init(struct domain *d) { int rc; =20 @@ -653,7 +653,7 @@ int paging_domain_init(struct domain *d, unsigned int d= omcr_flags) if ( hap_enabled(d) ) hap_domain_init(d); else - rc =3D shadow_domain_init(d, domcr_flags); + rc =3D shadow_domain_init(d, d->options); =20 return rc; } diff --git a/xen/include/asm-x86/hvm/domain.h b/xen/include/asm-x86/hvm/dom= ain.h index 6c7c4f5aa6..7897e36b94 100644 --- a/xen/include/asm-x86/hvm/domain.h +++ b/xen/include/asm-x86/hvm/domain.h @@ -156,7 +156,6 @@ struct hvm_domain { =20 struct viridian_domain *viridian; =20 - bool_t hap_enabled; bool_t mem_sharing_enabled; bool_t qemu_mapcache_invalidate; bool_t is_s3_suspended; @@ -195,11 +194,9 @@ struct hvm_domain { }; }; =20 -#ifdef CONFIG_HVM -#define hap_enabled(d) (is_hvm_domain(d) && (d)->arch.hvm.hap_enabled) -#else -#define hap_enabled(d) ({(void)(d); false;}) -#endif +#define hap_enabled(d) \ + (hvm_hap_supported() && is_hvm_domain(d) && \ + evaluate_nospec(d->options & XEN_DOMCTL_CDF_hap)) =20 #endif /* __ASM_X86_HVM_DOMAIN_H__ */ =20 diff --git a/xen/include/asm-x86/paging.h b/xen/include/asm-x86/paging.h index cf57ca708d..ab7887f23c 100644 --- a/xen/include/asm-x86/paging.h +++ b/xen/include/asm-x86/paging.h @@ -207,7 +207,7 @@ void paging_vcpu_init(struct vcpu *v); =20 /* Set up the paging-assistance-specific parts of a domain struct at * start of day. Called for every domain from arch_domain_create() */ -int paging_domain_init(struct domain *d, unsigned int domcr_flags); +int paging_domain_init(struct domain *d); =20 /* Handler for paging-control ops: operations from user-space to enable * and disable ephemeral shadow modes (test mode and log-dirty mode) and --=20 2.20.1.2.gb21ebb671 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel