From: Tianyu Lan <ltykernel@gmail.com> To: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, arnd@arndb.de, akpm@linux-foundation.org, gregkh@linuxfoundation.org, konrad.wilk@oracle.com, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: Tianyu Lan <Tianyu.Lan@microsoft.com>, iommu@lists.linux-foundation.org, linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, vkuznets@redhat.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, sunilmut@microsoft.com Subject: [Resend RFC PATCH V2 02/12] x86/HV: Initialize shared memory boundary in Isolation VM Date: Wed, 14 Apr 2021 10:49:35 -0400 [thread overview] Message-ID: <20210414144945.3460554-3-ltykernel@gmail.com> (raw) In-Reply-To: <20210414144945.3460554-1-ltykernel@gmail.com> From: Tianyu Lan <Tianyu.Lan@microsoft.com> Hyper-V exposes shared memory boundary via cpuid HYPERV_ CPUID_ISOLATION_CONFIG and store it in the shared_gpa_ boundary of ms_hyperv struct. This prepares to share memory with host for AMD SEV SNP guest. Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> --- arch/x86/kernel/cpu/mshyperv.c | 2 ++ include/asm-generic/mshyperv.h | 13 ++++++++++++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index e88bc296afca..aeafd4017c89 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -328,6 +328,8 @@ static void __init ms_hyperv_init_platform(void) if (ms_hyperv.features_b & HV_ISOLATION) { ms_hyperv.isolation_config_a = cpuid_eax(HYPERV_CPUID_ISOLATION_CONFIG); ms_hyperv.isolation_config_b = cpuid_ebx(HYPERV_CPUID_ISOLATION_CONFIG); + ms_hyperv.shared_gpa_boundary = + (u64)1 << ms_hyperv.shared_gpa_boundary_bits; pr_info("Hyper-V: Isolation Config: Group A 0x%x, Group B 0x%x\n", ms_hyperv.isolation_config_a, ms_hyperv.isolation_config_b); diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index c6f4c5c20fb8..b73e201abc70 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -34,8 +34,19 @@ struct ms_hyperv_info { u32 max_vp_index; u32 max_lp_index; u32 isolation_config_a; - u32 isolation_config_b; + union + { + u32 isolation_config_b; + struct { + u32 cvm_type : 4; + u32 Reserved11 : 1; + u32 shared_gpa_boundary_active : 1; + u32 shared_gpa_boundary_bits : 6; + u32 Reserved12 : 20; + }; + }; void __percpu **ghcb_base; + u64 shared_gpa_boundary; }; extern struct ms_hyperv_info ms_hyperv; -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Tianyu Lan <ltykernel@gmail.com> To: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, arnd@arndb.de, akpm@linux-foundation.org, gregkh@linuxfoundation.org, konrad.wilk@oracle.com, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: linux-arch@vger.kernel.org, thomas.lendacky@amd.com, linux-hyperv@vger.kernel.org, Tianyu Lan <Tianyu.Lan@microsoft.com>, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, brijesh.singh@amd.com, vkuznets@redhat.com, sunilmut@microsoft.com Subject: [Resend RFC PATCH V2 02/12] x86/HV: Initialize shared memory boundary in Isolation VM Date: Wed, 14 Apr 2021 10:49:35 -0400 [thread overview] Message-ID: <20210414144945.3460554-3-ltykernel@gmail.com> (raw) In-Reply-To: <20210414144945.3460554-1-ltykernel@gmail.com> From: Tianyu Lan <Tianyu.Lan@microsoft.com> Hyper-V exposes shared memory boundary via cpuid HYPERV_ CPUID_ISOLATION_CONFIG and store it in the shared_gpa_ boundary of ms_hyperv struct. This prepares to share memory with host for AMD SEV SNP guest. Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> --- arch/x86/kernel/cpu/mshyperv.c | 2 ++ include/asm-generic/mshyperv.h | 13 ++++++++++++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index e88bc296afca..aeafd4017c89 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -328,6 +328,8 @@ static void __init ms_hyperv_init_platform(void) if (ms_hyperv.features_b & HV_ISOLATION) { ms_hyperv.isolation_config_a = cpuid_eax(HYPERV_CPUID_ISOLATION_CONFIG); ms_hyperv.isolation_config_b = cpuid_ebx(HYPERV_CPUID_ISOLATION_CONFIG); + ms_hyperv.shared_gpa_boundary = + (u64)1 << ms_hyperv.shared_gpa_boundary_bits; pr_info("Hyper-V: Isolation Config: Group A 0x%x, Group B 0x%x\n", ms_hyperv.isolation_config_a, ms_hyperv.isolation_config_b); diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index c6f4c5c20fb8..b73e201abc70 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -34,8 +34,19 @@ struct ms_hyperv_info { u32 max_vp_index; u32 max_lp_index; u32 isolation_config_a; - u32 isolation_config_b; + union + { + u32 isolation_config_b; + struct { + u32 cvm_type : 4; + u32 Reserved11 : 1; + u32 shared_gpa_boundary_active : 1; + u32 shared_gpa_boundary_bits : 6; + u32 Reserved12 : 20; + }; + }; void __percpu **ghcb_base; + u64 shared_gpa_boundary; }; extern struct ms_hyperv_info ms_hyperv; -- 2.25.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-04-14 14:50 UTC|newest] Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-14 14:49 [Resend RFC PATCH V2 00/12] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-14 14:49 ` [Resend RFC PATCH V2 01/12] x86/HV: Initialize GHCB page in Isolation VM Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan [this message] 2021-04-14 14:49 ` [Resend RFC PATCH V2 02/12] x86/HV: Initialize shared memory boundary " Tianyu Lan 2021-04-14 14:49 ` [Resend RFC PATCH V2 03/12] x86/Hyper-V: Add new hvcall guest address host visibility support Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-14 15:40 ` Christoph Hellwig 2021-04-14 15:40 ` Christoph Hellwig 2021-04-15 8:13 ` Tianyu Lan 2021-04-15 8:13 ` Tianyu Lan 2021-04-14 14:49 ` [Resend RFC PATCH V2 04/12] HV: Add Write/Read MSR registers via ghcb Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-14 15:41 ` Christoph Hellwig 2021-04-14 15:41 ` Christoph Hellwig 2021-04-15 8:19 ` Tianyu Lan 2021-04-15 8:19 ` Tianyu Lan 2021-04-15 18:11 ` Konrad Rzeszutek Wilk 2021-04-15 18:11 ` Konrad Rzeszutek Wilk 2021-04-14 14:49 ` [Resend RFC PATCH V2 05/12] HV: Add ghcb hvcall support for SNP VM Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-14 14:49 ` [Resend RFC PATCH V2 06/12] HV/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-15 18:52 ` Konrad Rzeszutek Wilk 2021-04-15 18:52 ` Konrad Rzeszutek Wilk 2021-04-14 14:49 ` [Resend RFC PATCH V2 07/12] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-15 20:24 ` Konrad Rzeszutek Wilk 2021-04-15 20:24 ` Konrad Rzeszutek Wilk 2021-04-19 6:36 ` Christoph Hellwig 2021-04-19 6:36 ` Christoph Hellwig 2021-04-14 14:49 ` [Resend RFC PATCH V2 08/12] UIO/Hyper-V: Not load UIO HV driver in the isolation VM Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-14 15:42 ` Christoph Hellwig 2021-04-14 15:42 ` Christoph Hellwig 2021-04-14 15:45 ` Greg KH 2021-04-14 15:45 ` Greg KH 2021-04-14 16:17 ` Stephen Hemminger 2021-04-14 16:17 ` Stephen Hemminger 2021-04-15 12:54 ` Tianyu Lan 2021-04-15 12:54 ` Tianyu Lan 2021-04-15 13:09 ` Tianyu Lan 2021-04-15 13:09 ` Tianyu Lan 2021-04-14 14:49 ` [Resend RFC PATCH V2 09/12] swiotlb: Add bounce buffer remap address setting function Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-15 20:28 ` Konrad Rzeszutek Wilk 2021-04-15 20:28 ` Konrad Rzeszutek Wilk 2021-04-14 14:49 ` [Resend RFC PATCH V2 10/12] HV/IOMMU: Add Hyper-V dma ops support Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-14 15:47 ` Christoph Hellwig 2021-04-14 15:47 ` Christoph Hellwig 2021-05-12 16:01 ` Tianyu Lan 2021-05-12 16:01 ` Tianyu Lan 2021-05-12 17:29 ` Robin Murphy 2021-05-12 17:29 ` Robin Murphy 2021-05-13 3:19 ` Lu Baolu 2021-05-13 3:19 ` Lu Baolu 2021-04-14 14:49 ` [Resend RFC PATCH V2 11/12] HV/Netvsc: Add Isolation VM support for netvsc driver Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-14 15:50 ` Christoph Hellwig 2021-04-14 15:50 ` Christoph Hellwig 2021-04-15 8:39 ` Tianyu Lan 2021-04-15 8:39 ` Tianyu Lan 2021-04-14 14:49 ` [Resend RFC PATCH V2 12/12] HV/Storvsc: Add Isolation VM support for storvsc driver Tianyu Lan 2021-04-14 14:49 ` Tianyu Lan 2021-04-14 15:51 ` Christoph Hellwig 2021-04-14 15:51 ` Christoph Hellwig
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