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client-ip=162.221.158.21; receiver=esa3.hc3370-68.iphmx.com; envelope-from="Paul.Durrant@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: Ou/6V9ssKNHgtTUGxV4fMd61dnxpgZkwGGwlF3WRBNsccVRDh/xq1dKE+T0LlCCmTGYeHCqpzX 9SGQ/iKCOGCTpcXydj4yyIq+gos7oMu3Ajc5eM/OGOuk9yzrxlpLQjjyB0qdJ/viE8AyMVojQp VxE/SS26f91a5J/p/gvGnI7mT44YGNG2CHsGL5FQJ15aOe0q0ITpFcuyNWu8mpzIXx8BRxh/4/ GH//qrDiNOjz/17RmudqH0CGJMhO+8qQ7MW6i0ub1NlocQ0fB2iXeZ7KNUwGDTYpO5WwM/ZjvP X/I= X-SBRS: 2.7 X-MesageID: 5528291 X-Ironport-Server: esa3.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.64,500,1559534400"; d="scan'208";a="5528291" From: Paul Durrant To: Date: Fri, 13 Sep 2019 10:47:40 +0100 Message-ID: <20190913094741.31451-6-paul.durrant@citrix.com> X-Mailer: git-send-email 2.20.1.2.gb21ebb671 In-Reply-To: <20190913094741.31451-1-paul.durrant@citrix.com> References: <20190913094741.31451-1-paul.durrant@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH v10 5/6] iommu: tidy up iommu_use_hap_pt() and need_iommu_pt_sync() macros 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: Stefano Stabellini , Wei Liu , Konrad Rzeszutek Wilk , George Dunlap , Andrew Cooper , Ian Jackson , Tim Deegan , Julien Grall , Paul Durrant , Jan Beulich , Volodymyr Babchuk , =?utf-8?q?Roger_Pau_Monn?= =?utf-8?q?=C3=A9?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Thes macros really ought to live in the common xen/iommu.h header rather then being distributed amongst architecture specific iommu headers and xen/sched.h. This patch moves them there. NOTE: Disabling 'sharept' in the command line iommu options should really be hard error on ARM (as opposed to just being ignored), so define 'iommu_hap_pt_share' to be true for ARM (via ARM-selected CONFIG_IOMMU_FORCE_PT_SHARE). Signed-off-by: Paul Durrant Reviewed-by: Jan Beulich --- Cc: Andrew Cooper Cc: George Dunlap Cc: Ian Jackson Cc: Julien Grall Cc: Konrad Rzeszutek Wilk Cc: Stefano Stabellini Cc: Tim Deegan Cc: Wei Liu Cc: Volodymyr Babchuk Cc: "Roger Pau Monné" Previously part of https://lists.xenproject.org/archives/html/xen-devel/2019-07/msg02267.html v9: - Add new Kconfig option to cause 'iommu_hap_pt_share' to be defined to true, rather than using CONFIG_ARM, as requested by Julien - Assuming Jan's R-b stands since this is a mainly a cosmetic change directly requested by another maintainer v7: - Re-work the ARM handling of 'sharept' as suggested by Jan - Make sure that need_iommu_pt_sync() always evaluates its argument --- xen/arch/arm/Kconfig | 1 + xen/drivers/passthrough/Kconfig | 3 +++ xen/include/asm-arm/iommu.h | 3 --- xen/include/asm-x86/iommu.h | 4 ---- xen/include/xen/iommu.h | 15 ++++++++++++++- xen/include/xen/sched.h | 6 ------ 6 files changed, 18 insertions(+), 14 deletions(-) diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig index c2db2a6953..a51aa7bfa8 100644 --- a/xen/arch/arm/Kconfig +++ b/xen/arch/arm/Kconfig @@ -20,6 +20,7 @@ config ARM select HAS_DEVICE_TREE select HAS_PASSTHROUGH select HAS_PDX + select IOMMU_FORCE_PT_SHARE config ARCH_DEFCONFIG string diff --git a/xen/drivers/passthrough/Kconfig b/xen/drivers/passthrough/Kconfig index a3c06491be..61f944639e 100644 --- a/xen/drivers/passthrough/Kconfig +++ b/xen/drivers/passthrough/Kconfig @@ -13,3 +13,6 @@ config ARM_SMMU Say Y here if your SoC includes an IOMMU device implementing the ARM SMMU architecture. endif + +config IOMMU_FORCE_PT_SHARE + bool diff --git a/xen/include/asm-arm/iommu.h b/xen/include/asm-arm/iommu.h index 1577e83d2b..77a94b29eb 100644 --- a/xen/include/asm-arm/iommu.h +++ b/xen/include/asm-arm/iommu.h @@ -20,9 +20,6 @@ struct arch_iommu void *priv; }; -/* Always share P2M Table between the CPU and the IOMMU */ -#define iommu_use_hap_pt(d) is_iommu_enabled(d) - const struct iommu_ops *iommu_get_ops(void); void iommu_set_ops(const struct iommu_ops *ops); diff --git a/xen/include/asm-x86/iommu.h b/xen/include/asm-x86/iommu.h index 5071afd6a5..85741f7c96 100644 --- a/xen/include/asm-x86/iommu.h +++ b/xen/include/asm-x86/iommu.h @@ -86,10 +86,6 @@ struct iommu_init_ops { extern const struct iommu_init_ops *iommu_init_ops; -/* Are we using the domain P2M table as its IOMMU pagetable? */ -#define iommu_use_hap_pt(d) \ - (hap_enabled(d) && is_iommu_enabled(d) && iommu_hap_pt_share) - void iommu_update_ire_from_apic(unsigned int apic, unsigned int reg, unsigned int value); unsigned int iommu_read_apic_from_ire(unsigned int apic, unsigned int reg); int iommu_setup_hpet_msi(struct msi_desc *); diff --git a/xen/include/xen/iommu.h b/xen/include/xen/iommu.h index be7af49c1e..28522f299f 100644 --- a/xen/include/xen/iommu.h +++ b/xen/include/xen/iommu.h @@ -56,8 +56,10 @@ extern bool_t iommu_enable, iommu_enabled; extern bool_t force_iommu, iommu_verbose, iommu_igfx; extern bool_t iommu_snoop, iommu_qinval, iommu_intremap, iommu_intpost; -#ifdef CONFIG_HVM +#if defined(CONFIG_HVM) extern bool iommu_hap_pt_share; +#elif defined(CONFIG_IOMMU_FORCE_PT_SHARE) +#define iommu_hap_pt_share true #else #define iommu_hap_pt_share false #endif @@ -279,6 +281,17 @@ struct domain_iommu { #define iommu_set_feature(d, f) set_bit(f, dom_iommu(d)->features) #define iommu_clear_feature(d, f) clear_bit(f, dom_iommu(d)->features) +/* Are we using the domain P2M table as its IOMMU pagetable? */ +#define iommu_use_hap_pt(d) \ + (hap_enabled(d) && is_iommu_enabled(d) && iommu_hap_pt_share) + +/* Does the IOMMU pagetable need to be kept synchronized with the P2M */ +#ifdef CONFIG_HAS_PASSTHROUGH +#define need_iommu_pt_sync(d) (dom_iommu(d)->need_sync) +#else +#define need_iommu_pt_sync(d) ({ (void)(d); false; }) +#endif + int __must_check iommu_suspend(void); void iommu_resume(void); void iommu_crash_shutdown(void); diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h index ae1faf70d3..a6896221f9 100644 --- a/xen/include/xen/sched.h +++ b/xen/include/xen/sched.h @@ -965,12 +965,6 @@ static inline bool is_hwdom_pinned_vcpu(const struct vcpu *v) cpumask_weight(v->cpu_hard_affinity) == 1); } -#ifdef CONFIG_HAS_PASSTHROUGH -#define need_iommu_pt_sync(d) (dom_iommu(d)->need_sync) -#else -#define need_iommu_pt_sync(d) false -#endif - static inline bool is_vcpu_online(const struct vcpu *v) { return !test_bit(_VPF_down, &v->pause_flags);