From: Tianyu Lan <ltykernel@gmail.com>
To: Wei Liu <wei.liu@kernel.org>
Cc: kys@microsoft.com, haiyangz@microsoft.com,
sthemmin@microsoft.com, 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, arnd@arndb.de, hch@lst.de,
m.szyprowski@samsung.com, robin.murphy@arm.com,
thomas.lendacky@amd.com, brijesh.singh@amd.com, ardb@kernel.org,
Tianyu.Lan@microsoft.com, pgonda@google.com,
martin.b.radev@gmail.com, akpm@linux-foundation.org,
kirill.shutemov@linux.intel.com, rppt@kernel.org,
sfr@canb.auug.org.au, saravanand@fb.com,
krish.sadhukhan@oracle.com, aneesh.kumar@linux.ibm.com,
xen-devel@lists.xenproject.org, rientjes@google.com,
hannes@cmpxchg.org, tj@kernel.org,
michael.h.kelley@microsoft.com, iommu@lists.linux-foundation.org,
linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org,
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netdev@vger.kernel.org, vkuznets@redhat.com,
parri.andrea@gmail.com, dave.hansen@intel.com
Subject: Re: [PATCH V3 03/13] x86/HV: Add new hvcall guest address host visibility support
Date: Tue, 10 Aug 2021 20:25:20 +0800 [thread overview]
Message-ID: <3a888810-69cf-fa4d-b374-2053432e1e56@gmail.com> (raw)
In-Reply-To: <20210810110359.i4qodw7h36zrsicp@liuwe-devbox-debian-v2>
On 8/10/2021 7:03 PM, Wei Liu wrote:
>> diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
>> index 0bb4d9ca7a55..b3683083208a 100644
>> --- a/arch/x86/hyperv/hv_init.c
>> +++ b/arch/x86/hyperv/hv_init.c
>> @@ -607,6 +607,12 @@ EXPORT_SYMBOL_GPL(hv_get_isolation_type);
>>
>> bool hv_is_isolation_supported(void)
>> {
>> + if (!cpu_feature_enabled(X86_FEATURE_HYPERVISOR))
>> + return 0;
> Nit: false instead of 0.
>
OK. Will fix in the next version.
>> +int hv_mark_gpa_visibility(u16 count, const u64 pfn[],
>> + enum hv_mem_host_visibility visibility)
>> +{
>> + struct hv_gpa_range_for_visibility **input_pcpu, *input;
>> + u16 pages_processed;
>> + u64 hv_status;
>> + unsigned long flags;
>> +
>> + /* no-op if partition isolation is not enabled */
>> + if (!hv_is_isolation_supported())
>> + return 0;
>> +
>> + if (count > HV_MAX_MODIFY_GPA_REP_COUNT) {
>> + pr_err("Hyper-V: GPA count:%d exceeds supported:%lu\n", count,
>> + HV_MAX_MODIFY_GPA_REP_COUNT);
>> + return -EINVAL;
>> + }
>> +
>> + local_irq_save(flags);
>> + input_pcpu = (struct hv_gpa_range_for_visibility **)
>> + this_cpu_ptr(hyperv_pcpu_input_arg);
>> + input = *input_pcpu;
>> + if (unlikely(!input)) {
>> + local_irq_restore(flags);
>> + return -EINVAL;
>> + }
>> +
>> + input->partition_id = HV_PARTITION_ID_SELF;
>> + input->host_visibility = visibility;
>> + input->reserved0 = 0;
>> + input->reserved1 = 0;
>> + memcpy((void *)input->gpa_page_list, pfn, count * sizeof(*pfn));
>> + hv_status = hv_do_rep_hypercall(
>> + HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY, count,
>> + 0, input, &pages_processed);
>> + local_irq_restore(flags);
>> +
>> + if (!(hv_status & HV_HYPERCALL_RESULT_MASK))
>> + return 0;
>> +
>> + return hv_status & HV_HYPERCALL_RESULT_MASK;
> Joseph introduced a few helper functions in 753ed9c95c37d. They will
> make the code simpler.
OK. Will update in the next version.
Thanks.
next prev parent reply other threads:[~2021-08-10 12:25 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-09 17:56 [PATCH V3 00/13] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan
2021-08-09 17:56 ` [PATCH V3 01/13] x86/HV: Initialize GHCB page in Isolation VM Tianyu Lan
2021-08-10 10:56 ` Wei Liu
2021-08-10 12:17 ` Tianyu Lan
2021-08-12 19:14 ` Michael Kelley
2021-08-13 15:46 ` Tianyu Lan
2021-08-09 17:56 ` [PATCH V3 02/13] x86/HV: Initialize shared memory boundary in the " Tianyu Lan
2021-08-12 19:18 ` Michael Kelley
2021-08-14 13:32 ` Tianyu Lan
2021-08-09 17:56 ` [PATCH V3 03/13] x86/HV: Add new hvcall guest address host visibility support Tianyu Lan
2021-08-09 22:12 ` Dave Hansen
2021-08-10 13:09 ` Tianyu Lan
2021-08-10 11:03 ` Wei Liu
2021-08-10 12:25 ` Tianyu Lan [this message]
2021-08-12 19:36 ` Michael Kelley
2021-08-12 21:10 ` Michael Kelley
2021-08-09 17:56 ` [PATCH V3 04/13] HV: Mark vmbus ring buffer visible to host in Isolation VM Tianyu Lan
2021-08-12 22:20 ` Michael Kelley
2021-08-15 15:21 ` Tianyu Lan
2021-08-09 17:56 ` [PATCH V3 05/13] HV: Add Write/Read MSR registers via ghcb page Tianyu Lan
2021-08-13 19:31 ` Michael Kelley
2021-08-13 20:26 ` Michael Kelley
2021-08-24 8:45 ` Christoph Hellwig
2021-08-09 17:56 ` [PATCH V3 06/13] HV: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-08-13 20:42 ` Michael Kelley
2021-08-09 17:56 ` [PATCH V3 07/13] HV/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-08-13 21:28 ` Michael Kelley
2021-08-09 17:56 ` [PATCH V3 08/13] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-08-16 17:28 ` Michael Kelley
2021-08-17 15:36 ` Tianyu Lan
2021-08-09 17:56 ` [PATCH V3 09/13] DMA: Add dma_map_decrypted/dma_unmap_encrypted() function Tianyu Lan
2021-08-12 12:26 ` Christoph Hellwig
2021-08-12 15:38 ` Tianyu Lan
2021-08-09 17:56 ` [PATCH V3 10/13] x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM Tianyu Lan
2021-08-12 12:27 ` Christoph Hellwig
2021-08-13 17:58 ` Tianyu Lan
2021-08-16 14:50 ` Tianyu Lan
2021-08-19 8:49 ` Christoph Hellwig
2021-08-19 9:59 ` Tianyu Lan
2021-08-19 10:02 ` Christoph Hellwig
2021-08-19 10:03 ` Tianyu Lan
2021-08-09 17:56 ` [PATCH V3 11/13] HV/IOMMU: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan
2021-08-19 18:11 ` Michael Kelley
2021-08-20 4:13 ` hch
2021-08-20 9:32 ` Tianyu Lan
2021-08-09 17:56 ` [PATCH V3 12/13] HV/Netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-08-19 18:14 ` Michael Kelley
2021-08-20 4:21 ` hch
2021-08-20 13:11 ` Tianyu Lan
2021-08-20 13:30 ` Tom Lendacky
2021-08-20 18:20 ` Tianyu Lan
2021-08-09 17:56 ` [PATCH V3 13/13] HV/Storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-08-19 18:17 ` Michael Kelley
2021-08-20 4:32 ` hch
2021-08-20 15:40 ` Michael Kelley
2021-08-24 8:49 ` min_align_mask " hch
2021-08-20 16:01 ` Tianyu Lan
2021-08-20 15:20 ` Tianyu Lan
2021-08-20 15:37 ` Tianyu Lan
2021-08-20 16:08 ` Michael Kelley
2021-08-20 18:04 ` Tianyu Lan
2021-08-20 19:22 ` Michael Kelley
2021-08-24 8:46 ` hch
2021-08-16 14:55 ` [PATCH V3 00/13] x86/Hyper-V: Add Hyper-V Isolation VM support Michael Kelley
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