linux-kernel - Re: [PATCH 3/3] drm/amd/display: Support DRM_AMD_DC

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Message-ID: <20231123-headdress-mold-0dd7a74477f7@wendy>
Date:   Thu, 23 Nov 2023 14:23:01 +0000
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     Samuel Holland <samuel.holland@...ive.com>
CC:     Palmer Dabbelt <palmer@...belt.com>,
        Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>,
        David Airlie <airlied@...il.com>,
        Christian König <christian.koenig@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Pan Xinhui <Xinhui.Pan@....com>,
        Daniel Vetter <daniel@...ll.ch>,
        <amd-gfx@...ts.freedesktop.org>, <llvm@...ts.linux.dev>,
        Nathan Chancellor <nathan@...nel.org>, <arnd@...db.de>
Subject: Re: [PATCH 3/3] drm/amd/display: Support DRM_AMD_DC_FP on RISC-V

On Tue, Nov 21, 2023 at 07:05:15PM -0800, Samuel Holland wrote:
> RISC-V uses kernel_fpu_begin()/kernel_fpu_end() like several other
> architectures. Enabling hardware FP requires overriding the ISA string
> for the relevant compilation units.

Ah yes, bringing the joy of frame-larger-than warnings to RISC-V:
../drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_32.c:58:13: warning: stack frame size (2416) exceeds limit (2048) in 'DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation' [-Wframe-larger-than]

Nathan, have you given up on these being sorted out?

Also, what on earth is that function name, it exceeds 80 characters
before even considering anything else? Actually, I don't think I want
to know.

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