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From: Shuah Khan <skhan@linuxfoundation.org>
To: Dan Carpenter <dan.carpenter@linaro.org>,
	Sean Christopherson <seanjc@google.com>,
	Shuah Khan <shuah@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: kvm@vger.kernel.org, "David Hildenbrand" <david@redhat.com>,
	"Shuah Khan" <skhan@linuxfoundation.org>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	"Chao Peng" <chao.p.peng@linux.intel.com>,
	linux-riscv@lists.infradead.org,
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	"Anders Roxell" <anders.roxell@linaro.org>,
	"Benjamin Copeland" <ben.copeland@linaro.org>,
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	"Huacai Chen" <chenhuacai@kernel.org>,
	"Xiaoyao Li" <xiaoyao.li@intel.com>,
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	=?UTF- 8?B?TWlja2HDq2wgU2FsYcO8?= n <mic@digikod.net>,
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	linuxppc-dev@lists.ozlabs.org, "Xu Yilun" <yilun.xu@intel.com>,
	"Anish Moorthy" <amoorthy@google.com>
Subject: Re: [PATCH v13 25/35] KVM: selftests: Convert lib's mem regions to KVM_SET_USER_MEMORY_REGION2
Date: Thu, 25 Apr 2024 08:45:07 -0600	[thread overview]
Message-ID: <3848a9ad-07aa-48da-a2b7-264c4a990b5b@linuxfoundation.org> (raw)
In-Reply-To: <69ae0694-8ca3-402c-b864-99b500b24f5d@moroto.mountain>

On 4/25/24 08:12, Dan Carpenter wrote:
> On Fri, Oct 27, 2023 at 11:22:07AM -0700, Sean Christopherson wrote:
>> Use KVM_SET_USER_MEMORY_REGION2 throughout KVM's selftests library so that
>> support for guest private memory can be added without needing an entirely
>> separate set of helpers.
>>
>> Note, this obviously makes selftests backwards-incompatible with older KVM
>    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> versions from this point forward.
>    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> 
> Is there a way we could disable the tests on older kernels instead of
> making them fail?  Check uname or something?  There is probably a
> standard way to do this...  It's these tests which fail.

They shouldn't fail - the tests should be skipped on older kernels.
If it is absolutely necessary to dd uname to check kernel version,
refer to zram/zram_lib.sh for an example.

thanks,
-- Shuah

  parent reply	other threads:[~2024-04-25 14:46 UTC|newest]

Thread overview: 145+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-27 18:21 [PATCH v13 00/35] KVM: guest_memfd() and per-page attributes Sean Christopherson
2023-10-27 18:21 ` [PATCH v13 01/35] KVM: Tweak kvm_hva_range and hva_handler_t to allow reusing for gfn ranges Sean Christopherson
2023-11-01 12:46   ` Fuad Tabba
2023-10-27 18:21 ` [PATCH v13 02/35] KVM: Assert that mmu_invalidate_in_progress *never* goes negative Sean Christopherson
2023-10-30 16:27   ` Paolo Bonzini
2023-11-01 12:46   ` Fuad Tabba
2023-10-27 18:21 ` [PATCH v13 03/35] KVM: Use gfn instead of hva for mmu_notifier_retry Sean Christopherson
2023-10-30 16:30   ` Paolo Bonzini
2023-10-30 16:53   ` David Matlack
2023-10-30 17:00     ` Paolo Bonzini
2023-10-30 18:21       ` David Matlack
2023-10-30 18:19     ` David Matlack
2023-11-01 15:31   ` Xu Yilun
2023-10-27 18:21 ` [PATCH v13 04/35] KVM: WARN if there are dangling MMU invalidations at VM destruction Sean Christopherson
2023-10-30 16:32   ` Paolo Bonzini
2023-11-01 12:50   ` Fuad Tabba
2023-10-27 18:21 ` [PATCH v13 05/35] KVM: PPC: Drop dead code related to KVM_ARCH_WANT_MMU_NOTIFIER Sean Christopherson
2023-10-30 16:34   ` Paolo Bonzini
2023-11-01 12:51   ` Fuad Tabba
2023-10-27 18:21 ` [PATCH v13 06/35] KVM: PPC: Return '1' unconditionally for KVM_CAP_SYNC_MMU Sean Christopherson
2023-10-27 18:21 ` [PATCH v13 07/35] KVM: Convert KVM_ARCH_WANT_MMU_NOTIFIER to CONFIG_KVM_GENERIC_MMU_NOTIFIER Sean Christopherson
2023-10-30 16:37   ` Paolo Bonzini
2023-11-01 12:54   ` Fuad Tabba
2023-10-27 18:21 ` [PATCH v13 08/35] KVM: Introduce KVM_SET_USER_MEMORY_REGION2 Sean Christopherson
2023-10-30 16:41   ` Paolo Bonzini
2023-10-30 20:25     ` Sean Christopherson
2023-10-30 22:12       ` Sean Christopherson
2023-10-30 23:22       ` Paolo Bonzini
2023-10-31  0:18         ` Sean Christopherson
2023-10-31  2:26   ` Xiaoyao Li
2023-10-31 14:04     ` Sean Christopherson
2023-11-01 14:19   ` Fuad Tabba
2023-10-27 18:21 ` [PATCH v13 09/35] KVM: Add KVM_EXIT_MEMORY_FAULT exit to report faults to userspace Sean Christopherson
2023-10-30 17:22   ` Paolo Bonzini
2023-11-01  7:30   ` Binbin Wu
2023-11-01 10:52   ` Huang, Kai
2023-11-01 17:36     ` Sean Christopherson
2023-11-02  2:19       ` Xiaoyao Li
2023-11-02 15:51         ` Sean Christopherson
2023-11-02  3:17       ` Huang, Kai
2023-11-02  9:35         ` Huang, Kai
2023-11-02 11:03           ` Paolo Bonzini
2023-11-02 15:44             ` Sean Christopherson
2023-11-02 18:35               ` Huang, Kai
2023-11-02 15:56         ` Sean Christopherson
2023-11-02 11:01       ` Paolo Bonzini
2023-11-03  4:09   ` Xu Yilun
2023-10-27 18:21 ` [PATCH v13 10/35] KVM: Add a dedicated mmu_notifier flag for reclaiming freed memory Sean Christopherson
2023-10-30 17:11   ` Paolo Bonzini
2023-11-02 13:55   ` Fuad Tabba
2023-10-27 18:21 ` [PATCH v13 11/35] KVM: Drop .on_unlock() mmu_notifier hook Sean Christopherson
2023-10-30 17:18   ` Paolo Bonzini
2023-11-02 13:55   ` Fuad Tabba
2023-10-27 18:21 ` [PATCH v13 12/35] KVM: Prepare for handling only shared mappings in mmu_notifier events Sean Christopherson
2023-10-30 17:21   ` Paolo Bonzini
2023-10-30 22:07     ` Sean Christopherson
2023-11-02  5:59   ` Binbin Wu
2023-11-02 11:14     ` Paolo Bonzini
2023-11-02 14:01   ` Fuad Tabba
2023-11-02 14:41     ` Sean Christopherson
2023-11-02 14:57       ` Fuad Tabba
2023-10-27 18:21 ` [PATCH v13 13/35] KVM: Introduce per-page memory attributes Sean Christopherson
2023-10-30  8:11   ` Chao Gao
2023-10-30 16:10     ` Sean Christopherson
2023-10-30 22:05       ` Sean Christopherson
2023-10-31 16:43   ` David Matlack
2023-11-02  3:01   ` Huang, Kai
2023-11-02 10:32     ` Paolo Bonzini
2023-11-02 10:55       ` Huang, Kai
2023-10-27 18:21 ` [PATCH v13 14/35] mm: Add AS_UNMOVABLE to mark mapping as completely unmovable Sean Christopherson
2023-10-30 17:24   ` Paolo Bonzini
2023-10-27 18:21 ` [PATCH v13 15/35] fs: Export anon_inode_getfile_secure() for use by KVM Sean Christopherson
2023-10-30 17:30   ` Paolo Bonzini
2023-11-02 16:24   ` Christian Brauner
2023-11-03 10:40     ` Paolo Bonzini
2023-10-27 18:21 ` [PATCH v13 16/35] KVM: Add KVM_CREATE_GUEST_MEMFD ioctl() for guest-specific backing memory Sean Christopherson
2023-10-31  2:27   ` Xiaoyao Li
2023-10-31  6:30   ` Chao Gao
2023-10-31 14:10     ` Sean Christopherson
2023-10-31 15:05   ` Fuad Tabba
2023-10-31 22:13     ` Sean Christopherson
2023-10-31 22:18       ` Paolo Bonzini
2023-11-01 10:51       ` Fuad Tabba
2023-11-01 21:55         ` Sean Christopherson
2023-11-02 13:52           ` Fuad Tabba
2023-11-03 23:17             ` Sean Christopherson
2023-10-31 18:24   ` David Matlack
2023-10-31 21:36     ` Sean Christopherson
2023-10-31 22:39       ` David Matlack
2023-11-02 15:48         ` Paolo Bonzini
2023-11-02 16:03           ` Sean Christopherson
2023-11-02 16:28             ` David Matlack
2023-11-02 17:37               ` Sean Christopherson
2023-11-03  9:42   ` Fuad Tabba
2023-11-04 10:26   ` Xu Yilun
2023-11-06 15:43     ` Sean Christopherson
2023-10-27 18:21 ` [PATCH v13 17/35] KVM: Add transparent hugepage support for dedicated guest memory Sean Christopherson
2023-10-31  8:35   ` Xiaoyao Li
2023-10-31 14:16     ` Sean Christopherson
2023-11-01  7:25       ` Xiaoyao Li
2023-11-01 13:41         ` Sean Christopherson
2023-11-01 13:49           ` Paolo Bonzini
2023-11-01 16:36             ` Sean Christopherson
2023-11-01 22:28               ` Paolo Bonzini
2023-11-01 22:34                 ` Sean Christopherson
2023-11-01 23:17                   ` Paolo Bonzini
2023-11-02 15:38                     ` Sean Christopherson
2023-11-02 15:46                       ` Paolo Bonzini
2023-11-27 11:13                         ` Vlastimil Babka
2023-11-29 22:40                           ` Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 18/35] KVM: x86: "Reset" vcpu->run->exit_reason early in KVM_RUN Sean Christopherson
2023-10-30 17:31   ` Paolo Bonzini
2023-11-02 14:16   ` Fuad Tabba
2023-10-27 18:22 ` [PATCH v13 19/35] KVM: x86: Disallow hugepages when memory attributes are mixed Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 20/35] KVM: x86/mmu: Handle page fault for private memory Sean Christopherson
2023-11-02 14:34   ` Fuad Tabba
2023-11-05 13:02   ` Xu Yilun
2023-11-05 16:19     ` Paolo Bonzini
2023-11-06 13:29       ` Xu Yilun
2023-11-06 15:56         ` Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 21/35] KVM: Drop superfluous __KVM_VCPU_MULTIPLE_ADDRESS_SPACE macro Sean Christopherson
2023-11-02 14:35   ` Fuad Tabba
2023-10-27 18:22 ` [PATCH v13 22/35] KVM: Allow arch code to track number of memslot address spaces per VM Sean Christopherson
2023-10-30 17:34   ` Paolo Bonzini
2023-11-02 14:52   ` Fuad Tabba
2023-10-27 18:22 ` [PATCH v13 23/35] KVM: x86: Add support for "protected VMs" that can utilize private memory Sean Christopherson
2023-10-30 17:36   ` Paolo Bonzini
2023-11-06 11:00   ` Fuad Tabba
2023-11-06 11:03     ` Paolo Bonzini
2023-10-27 18:22 ` [PATCH v13 24/35] KVM: selftests: Drop unused kvm_userspace_memory_region_find() helper Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 25/35] KVM: selftests: Convert lib's mem regions to KVM_SET_USER_MEMORY_REGION2 Sean Christopherson
     [not found]   ` <69ae0694-8ca3-402c-b864-99b500b24f5d@moroto.mountain>
2024-04-25 14:45     ` Shuah Khan [this message]
     [not found]       ` <ZipyPYR8Nv_usoU4@google.com>
2024-04-26  7:33         ` Jarkko Sakkinen
2023-10-27 18:22 ` [PATCH v13 26/35] KVM: selftests: Add support for creating private memslots Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 27/35] KVM: selftests: Add helpers to convert guest memory b/w private and shared Sean Christopherson
2023-11-06 11:26   ` Fuad Tabba
2023-10-27 18:22 ` [PATCH v13 28/35] KVM: selftests: Add helpers to do KVM_HC_MAP_GPA_RANGE hypercalls (x86) Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 29/35] KVM: selftests: Introduce VM "shape" to allow tests to specify the VM type Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 30/35] KVM: selftests: Add GUEST_SYNC[1-6] macros for synchronizing more data Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 31/35] KVM: selftests: Add x86-only selftest for private memory conversions Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 32/35] KVM: selftests: Add KVM_SET_USER_MEMORY_REGION2 helper Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 33/35] KVM: selftests: Expand set_memory_region_test to validate guest_memfd() Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 34/35] KVM: selftests: Add basic selftest for guest_memfd() Sean Christopherson
2023-10-27 18:22 ` [PATCH v13 35/35] KVM: selftests: Test KVM exit behavior for private memory/access Sean Christopherson
2023-10-30 17:39 ` [PATCH v13 00/35] KVM: guest_memfd() and per-page attributes Paolo Bonzini

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