From: Sairaj Kodilkar <sarunkod@amd.com>
To: Randy Dunlap <rdunlap@infradead.org>,
"Borislav Petkov (AMD)" <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"Joerg Roedel (AMD)" <joro@8bytes.org>,
"Paul E. McKenney" <paulmck@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Breno Leitao <leitao@debian.org>,
"Christian Brauner" <brauner@kernel.org>,
Dapeng Mi <dapeng1.mi@linux.intel.com>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
Eric Biggers <ebiggers@kernel.org>,
Ingo Molnar <mingo@redhat.com>, Jakub Kicinski <kuba@kernel.org>,
"Jonathan Corbet" <corbet@lwn.net>,
Kiryl Shutsemau <kas@kernel.org>,
Li RongQing <lirongqing@baidu.com>,
Marco Elver <elver@google.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
"Robin Murphy" <robin.murphy@arm.com>,
Sean Christopherson <seanjc@google.com>,
"Shuah Khan" <skhan@linuxfoundation.org>,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
Thomas Gleixner <tglx@kernel.org>,
"Vasant Hegde" <vasant.hegde@amd.com>,
Will Deacon <will@kernel.org>, <iommu@lists.linux.dev>,
<kvm@vger.kernel.org>, <linux-coco@lists.linux.dev>,
<linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<x86@kernel.org>
Cc: <sarunkod@amd.com>
Subject: Re: [PATCH v4 7/7] iommu/amd: Provide kernel command line option to enable GAPPI
Date: Fri, 21 Aug 2026 13:11:53 +0530 [thread overview]
Message-ID: <ed990d4c-0ffe-46b3-867b-87bbb8a0de37@amd.com> (raw)
In-Reply-To: <352a7732-86e7-437a-9e2e-e1e117bbe95a@infradead.org>
On 8/21/2026 11:43 AM, Randy Dunlap wrote:
>
>
> On 8/20/26 10:56 PM, Sairaj Kodilkar wrote:
>> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
>> index 97007f4f69d4..7bea1bbaa0e0 100644
>> --- a/Documentation/admin-guide/kernel-parameters.txt
>> +++ b/Documentation/admin-guide/kernel-parameters.txt
>> @@ -455,7 +455,8 @@ Kernel parameters
>> to 4 KiB.
>> v2_pgsizes_only - Limit page-sizes used for v1 page-tables
>> to 4KiB/2Mib/1GiB.
>> -
>> + gappi - Use GAPPI instead of GALOG for vCPU
>> + wakeup notification.
>
> Is GALOG documented somewhere? Should it be?
> I can't find it...
Its not documented. Maybe we can add small documentation in
arch/x86/iommu.rst
Thanks
Sairaj
>
> thanks.
next prev parent reply other threads:[~2026-08-21 7:42 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-21 5:56 [PATCH v4 0/7] Add support for AMD IOMMU GAPPI Sairaj Kodilkar
2026-08-21 5:56 ` [PATCH v4 1/7] iommu/amd: KVM: SVM: Rename cpu to apicid in IOMMU interface Sairaj Kodilkar
2026-08-21 15:55 ` Vasant Hegde
2026-08-21 5:56 ` [PATCH v4 2/7] iommu/amd: KVM: SVM: Rename ga_log_intr to wakeup_intr " Sairaj Kodilkar
2026-08-21 15:55 ` Vasant Hegde
2026-08-21 5:56 ` [PATCH v4 3/7] iommu/amd: KVM: SVM: Add explicit vCPU running state to " Sairaj Kodilkar
2026-08-21 15:56 ` Vasant Hegde
2026-08-21 5:56 ` [PATCH v4 4/7] iommu/amd: Program guest-mode IRTEs for GAPPI wakeup when IRTE[IsRun] = 0 Sairaj Kodilkar
2026-08-21 15:56 ` Vasant Hegde
2026-08-21 5:56 ` [PATCH v4 5/7] KVM: VMX: Factor out wakeup list handling code to KVM Sairaj Kodilkar
2026-08-21 5:56 ` [PATCH v4 6/7] KVM: SVM: Add support for AMD IOMMU Guest APIC Physical Processor Interrupt (GAPPI) Sairaj Kodilkar
2026-08-21 16:15 ` Vasant Hegde
2026-08-21 5:56 ` [PATCH v4 7/7] iommu/amd: Provide kernel command line option to enable GAPPI Sairaj Kodilkar
2026-08-21 6:13 ` Randy Dunlap
2026-08-21 7:41 ` Sairaj Kodilkar [this message]
2026-08-21 7:38 ` [PATCH v4 0/7] Add support for AMD IOMMU GAPPI Sairaj Kodilkar
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