From: Tianyu Lan <ltykernel@gmail•com>
To: kys@microsoft•com, haiyangz@microsoft•com,
sthemmin@microsoft•com, wei.liu@kernel•org, decui@microsoft•com,
tglx@linutronix•de, mingo@redhat•com, bp@alien8•de,
x86@kernel•org, hpa@zytor•com, dave.hansen@linux•intel.com,
luto@kernel•org, peterz@infradead•org, konrad.wilk@oracle•com,
boris.ostrovsky@oracle•com, jgross@suse•com,
sstabellini@kernel•org, joro@8bytes•org, will@kernel•org,
davem@davemloft•net, kuba@kernel•org, jejb@linux•ibm.com,
martin.petersen@oracle•com, gregkh@linuxfoundation•org,
arnd@arndb•de, hch@lst•de, m.szyprowski@samsung•com,
robin.murphy@arm•com, brijesh.singh@amd•com,
Tianyu.Lan@microsoft•com, thomas.lendacky@amd•com,
pgonda@google•com, akpm@linux-foundation•org,
kirill.shutemov@linux•intel.com, rppt@kernel•org,
sfr@canb•auug.org.au, aneesh.kumar@linux•ibm.com,
saravanand@fb•com, krish.sadhukhan@oracle•com,
xen-devel@lists•xenproject.org, tj@kernel•org,
rientjes@google•com, michael.h.kelley@microsoft•com
Cc: iommu@lists•linux-foundation.org, linux-arch@vger•kernel.org,
linux-hyperv@vger•kernel.org, linux-kernel@vger•kernel.org,
linux-scsi@vger•kernel.org, netdev@vger•kernel.org,
vkuznets@redhat•com, parri.andrea@gmail•com,
dave.hansen@intel•com
Subject: [PATCH V5 02/12] x86/hyperv: Initialize shared memory boundary in the Isolation VM.
Date: Tue, 14 Sep 2021 09:39:03 -0400 [thread overview]
Message-ID: <20210914133916.1440931-3-ltykernel@gmail.com> (raw)
In-Reply-To: <20210914133916.1440931-1-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 SNP guest.
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft•com>
---
Change since v4:
* Rename reserve field.
Change since v3:
* user BIT_ULL to get shared_gpa_boundary
* Rename field Reserved* to reserved
---
arch/x86/kernel/cpu/mshyperv.c | 2 ++
include/asm-generic/mshyperv.h | 12 +++++++++++-
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index b09ade389040..4794b716ec79 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -313,6 +313,8 @@ static void __init ms_hyperv_init_platform(void)
if (ms_hyperv.priv_high & 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 =
+ BIT_ULL(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 0924bbd8458e..e04efb87fee5 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -35,7 +35,17 @@ 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 reserved1 : 1;
+ u32 shared_gpa_boundary_active : 1;
+ u32 shared_gpa_boundary_bits : 6;
+ u32 reserved2 : 20;
+ };
+ };
+ u64 shared_gpa_boundary;
};
extern struct ms_hyperv_info ms_hyperv;
--
2.25.1
next prev parent reply other threads:[~2021-09-14 13:39 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-14 13:39 [PATCH V5 00/12] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan
2021-09-14 13:39 ` [PATCH V5 01/12] x86/hyperv: Initialize GHCB page in Isolation VM Tianyu Lan
2021-09-14 13:39 ` Tianyu Lan [this message]
2021-09-14 13:39 ` [PATCH V5 03/12] x86/hyperv: Add new hvcall guest address host visibility support Tianyu Lan
2021-09-14 13:39 ` [PATCH V5 04/12] Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM Tianyu Lan
2021-09-15 15:40 ` Michael Kelley
2021-09-14 13:39 ` [PATCH V5 05/12] x86/hyperv: Add Write/Read MSR registers via ghcb page Tianyu Lan
2021-09-15 15:41 ` Michael Kelley
2021-09-14 13:39 ` [PATCH V5 06/12] x86/hyperv: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-09-14 13:39 ` [PATCH V5 07/12] Drivers: hv: vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-09-15 15:41 ` Michael Kelley
2021-09-16 10:52 ` Tianyu Lan
2021-09-14 13:39 ` [PATCH V5 08/12] Drivers: hv : vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-09-14 13:39 ` [PATCH V5 09/12] x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM Tianyu Lan
2021-09-15 15:42 ` Michael Kelley
2021-09-16 10:57 ` Tianyu Lan
2021-09-14 13:39 ` [PATCH V5 10/12] hyperv/IOMMU: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan
2021-09-15 15:43 ` Michael Kelley
2021-09-14 13:39 ` [PATCH V5 11/12] scsi: storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-09-15 15:43 ` Michael Kelley
2021-09-14 13:39 ` [PATCH V5 12/12] net: netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-09-14 15:49 ` Haiyang Zhang
2021-09-15 16:21 ` Michael Kelley
2021-09-15 16:46 ` Haiyang Zhang
2021-09-16 13:56 ` Tianyu Lan
2021-09-16 14:43 ` Tianyu Lan
2021-09-22 10:34 ` Tianyu Lan
2021-09-27 14:26 ` Tianyu Lan
2021-09-28 5:39 ` Christoph Hellwig
2021-09-28 9:23 ` Tianyu Lan
2021-09-30 5:48 ` Christoph Hellwig
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