From: "Timur Kristóf" <timur.kristof@gmail.com>
To: "Koenig, Christian" <Christian.Koenig@amd.com>,
"amd-gfx@lists.freedesktop.org" <amd-gfx@lists.freedesktop.org>,
"Deucher, Alexander" <Alexander.Deucher@amd.com>,
"Natalie Vock" <natalie.vock@gmx.de>,
"Shetaia, Amir" <Amir.Shetaia@amd.com>,
"Marek Olšák" <maraeo@gmail.com>,
"Limonciello, Mario" <Mario.Limonciello@amd.com>,
"Tvrtko Ursulin" <tursulin@ursulin.net>,
"Kuehling, Felix" <Felix.Kuehling@amd.com>,
"Lazar, Lijo" <Lijo.Lazar@amd.com>,
"He, Siwei" <Siwei.He@amd.com>,
"Yang, Philip" <Philip.Yang@amd.com>,
"Joshi, Mukul" <Mukul.Joshi@amd.com>
Subject: Re: [PATCH 11/14] drm/amdgpu/ih6.0: Use MMIO ACK for retry CAM on IH 6.0
Date: Fri, 03 Jul 2026 20:50:09 +0200 [thread overview]
Message-ID: <3014087.Ex9A2HvPv6@timur-max> (raw)
In-Reply-To: <BL3PR12MB6425A9D4631A637C778F6BACEEF42@BL3PR12MB6425.namprd12.prod.outlook.com>
On 2026. július 3., péntek 20:11:59 közép-európai nyári idő Joshi, Mukul
wrote:
> > I still haven't found any explanation why we use a doorbell for the CAM in
> > the first
> place? Lijo, Alex, Felix does anybody know that?
> >
>
> If I remember correctly, we weren't sure if the IH_RETRY_CAM_ACK register
> would be available under
> virtualization. And we were sure doorbells would
> work for both bare-metal and virtualization.
Hi Mukul,
Can you clarify that please?
How are retry faults supposed to work under virtualization? Is the interrupt
processed by the guest or the host? Why is the IH_RETRY_CAM_ACK register not
available under virtualization?
Thanks & best regards,
Timur
next prev parent reply other threads:[~2026-07-03 18:50 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-01 16:17 [PATCH 00/14] drm/amdgpu: Improve retry fault handling (v3) Timur Kristóf
2026-07-01 16:17 ` [PATCH 01/14] drm/amdgpu: Respect noretry flag for retry faults on GFX12.1 Timur Kristóf
2026-07-02 7:58 ` Christian König
2026-07-01 16:17 ` [PATCH 02/14] drm/amdgpu/gfxhub: Enable retry fault interrupts when needed Timur Kristóf
2026-07-02 8:10 ` Christian König
2026-07-02 9:14 ` Timur Kristóf
2026-07-02 12:02 ` Christian König
2026-07-01 16:17 ` [PATCH 03/14] drm/amdgpu/ih: Don't perturb HW registers when accessing soft IH ring Timur Kristóf
2026-07-02 8:10 ` Christian König
2026-07-01 16:17 ` [PATCH 04/14] drm/amdgpu/ih: Add retry_cam_ack IH function pointer Timur Kristóf
2026-07-02 8:12 ` Christian König
2026-07-01 16:17 ` [PATCH 05/14] drm/amdgpu/ih6.1: Use IH_SW_RING_SIZE for soft IH ring instead of PAGE_SIZE Timur Kristóf
2026-07-02 8:13 ` Christian König
2026-07-01 16:17 ` [PATCH 06/14] drm/amdgpu/ih7.0: " Timur Kristóf
2026-07-02 10:15 ` Christian König
2026-07-01 16:17 ` [PATCH 07/14] drm/amdgpu/gmc11: Pass cam_index to retry fault handler Timur Kristóf
2026-07-02 10:17 ` Christian König
2026-07-01 16:17 ` [PATCH 08/14] drm/amdgpu/gmc12: " Timur Kristóf
2026-07-02 10:18 ` Christian König
2026-07-01 16:17 ` [PATCH 09/14] drm/amdgpu/gmc12: Use AMDGPU_PTE_IS_PTE flag for init_pte_flags on GFX12.0 Timur Kristóf
2026-07-02 10:19 ` Christian König
2026-07-01 16:17 ` [PATCH 10/14] drm/amdgpu/vm: Use init PTE flags and NOALLOC in amdgpu_vm_handle_fault() Timur Kristóf
2026-07-02 10:22 ` Christian König
2026-07-02 11:28 ` Timur Kristóf
2026-07-02 12:18 ` Christian König
2026-07-02 12:58 ` Timur Kristóf
2026-07-01 16:17 ` [PATCH 11/14] drm/amdgpu/ih6.0: Use MMIO ACK for retry CAM on IH 6.0 Timur Kristóf
2026-07-02 10:23 ` Christian König
2026-07-02 11:52 ` Timur Kristóf
2026-07-03 18:11 ` Joshi, Mukul
2026-07-03 18:50 ` Timur Kristóf [this message]
2026-07-07 8:25 ` Lazar, Lijo
2026-07-03 18:45 ` Kuehling, Felix
2026-07-03 17:46 ` Joshi, Mukul
2026-07-03 18:46 ` Timur Kristóf
2026-07-06 15:28 ` Alex Deucher
2026-07-06 18:04 ` Joshi, Mukul
2026-07-06 21:27 ` Mukul Joshi
2026-07-01 16:17 ` [PATCH 12/14] drm/amdgpu/ih7.0: Use MMIO ACK instead of doorbell for retry CAM on IH 7.0 Timur Kristóf
2026-07-02 10:24 ` Christian König
2026-07-03 16:31 ` Joshi, Mukul
2026-07-03 18:41 ` Timur Kristóf
2026-07-06 17:48 ` Joshi, Mukul
2026-07-06 19:03 ` Mukul Joshi
2026-07-01 16:17 ` [PATCH 13/14] drm/amdgpu/ih6.0: Enable retry CAM on Navi 3 dGPUs Timur Kristóf
2026-07-02 10:35 ` Christian König
2026-07-01 16:17 ` [PATCH 14/14] drm/amdgpu/ih7.0: Enable retry CAM on Navi 4 dGPUs Timur Kristóf
2026-07-02 10:38 ` Christian König
2026-07-02 11:53 ` Timur Kristóf
2026-07-02 12:30 ` Christian König
2026-07-02 12:47 ` Timur Kristóf
2026-07-02 13:26 ` Alex Deucher
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