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From: Sean Christopherson <seanjc@google.com>
To: Steve Rutherford <srutherford@google.com>
Cc: Ashish Kalra <ashish.kalra@amd.com>,
	"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
	"Singh, Brijesh" <brijesh.singh@amd.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	Joerg Roedel <joro@8bytes.org>, Borislav Petkov <bp@suse.de>,
	"Lendacky, Thomas" <Thomas.Lendacky@amd.com>,
	X86 ML <x86@kernel.org>, KVM list <kvm@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	"dovmurik@linux.vnet.ibm.com" <dovmurik@linux.vnet.ibm.com>,
	"tobin@ibm.com" <tobin@ibm.com>,
	"jejb@linux.ibm.com" <jejb@linux.ibm.com>,
	"frankeh@us.ibm.com" <frankeh@us.ibm.com>,
	"Grimm, Jon" <jon.grimm@amd.com>
Subject: Re: [PATCH v2 1/9] KVM: x86: Add AMD SEV specific Hypercall3
Date: Fri, 8 Jan 2021 08:56:20 -0800	[thread overview]
Message-ID: <X/iOtPo7/EoB6ban@google.com> (raw)
In-Reply-To: <CABayD+fHUSVCQP7muax5E-ZbAVMt0g1vXYjtJ22+m_+Y5SE=2Q@mail.gmail.com>

On Thu, Jan 07, 2021, Steve Rutherford wrote:
> Supporting merging of consecutive entries (or not) is less important
> to get right since it doesn't change any of the APIs. If someone runs
> into performance issues, they can loop back and fix this then. I'm
> slightly concerned with the behavior for overlapping regions. 

I'm assuming merging entries will be a near-trivial effort once everything else
is implemented, e.g. KVM will need to traverse the list to remove entries when
address are converted back to private.  Piling on merging functionality at that
point should not be all that hard, especially if the list is sorted and entries
are merged on insertion.

  reply	other threads:[~2021-01-08 16:57 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-01  0:45 [PATCH v2 0/9] Add AMD SEV page encryption bitmap support Ashish Kalra
2020-12-01  0:45 ` [PATCH v2 1/9] KVM: x86: Add AMD SEV specific Hypercall3 Ashish Kalra
2020-12-03  0:34   ` Sean Christopherson
2020-12-04 17:16     ` Brijesh Singh
2020-12-06 10:26     ` Paolo Bonzini
2020-12-07 20:41       ` Sean Christopherson
2020-12-08  3:09         ` Steve Rutherford
2020-12-08  4:16           ` Kalra, Ashish
2020-12-08 16:29           ` Brijesh Singh
2020-12-11 22:55             ` Ashish Kalra
2020-12-12  4:56               ` Ashish Kalra
2020-12-18 19:39                 ` Dr. David Alan Gilbert
     [not found]                   ` <E79E09A2-F314-4B59-B7AE-07B1D422DF2B@amd.com>
2020-12-18 19:56                     ` Dr. David Alan Gilbert
2021-01-06 23:05                       ` Ashish Kalra
2021-01-07  1:01                         ` Steve Rutherford
2021-01-07  1:34                           ` Ashish Kalra
2021-01-07  8:05                             ` Ashish Kalra
2021-01-08  0:47                               ` Ashish Kalra
2021-01-08  0:55                                 ` Steve Rutherford
2021-01-07 17:07                           ` Ashish Kalra
2021-01-07 17:26                             ` Sean Christopherson
2021-01-07 18:41                               ` Ashish Kalra
2021-01-07 19:22                                 ` Sean Christopherson
2021-01-08  0:54                                   ` Steve Rutherford
2021-01-08 16:56                                     ` Sean Christopherson [this message]
2020-12-01  0:46 ` [PATCH v2 2/9] KVM: X86: Introduce KVM_HC_PAGE_ENC_STATUS hypercall Ashish Kalra
2020-12-02 16:54   ` Dr. David Alan Gilbert
2020-12-02 21:22     ` Ashish Kalra
2020-12-06 10:25       ` Paolo Bonzini
2020-12-01  0:47 ` [PATCH v2 3/9] KVM: x86: Introduce KVM_GET_PAGE_ENC_BITMAP ioctl Ashish Kalra
2020-12-06 11:02   ` Dov Murik
2020-12-07 22:00     ` Ashish Kalra
2020-12-01  0:47 ` [PATCH v2 4/9] mm: x86: Invoke hypercall when page encryption status is changed Ashish Kalra
2020-12-01  0:47 ` [PATCH v2 5/9] KVM: x86: Introduce KVM_SET_PAGE_ENC_BITMAP ioctl Ashish Kalra
2020-12-01  0:47 ` [PATCH v2 6/9] KVM: SVM: Add support for static allocation of unified Page Encryption Bitmap Ashish Kalra
2020-12-01  0:48 ` [PATCH v2 7/9] KVM: x86: Mark _bss_decrypted section variables as decrypted in page encryption bitmap Ashish Kalra
2020-12-01  0:48 ` [PATCH v2 8/9] KVM: x86: Add kexec support for SEV " Ashish Kalra
2020-12-01  0:48 ` [PATCH v2 9/9] KVM: SVM: Bypass DBG_DECRYPT API calls for unecrypted guest memory Ashish Kalra
2020-12-08  5:18 [PATCH v2 1/9] KVM: x86: Add AMD SEV specific Hypercall3 Kalra, Ashish

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