From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.ffmpeg.org (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTPS id 63BE04CBD1 for ; Fri, 8 Aug 2025 12:24:24 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTP id D9FEA687D97; Fri, 8 Aug 2025 15:24:19 +0300 (EEST) Received: from mail-qt1-f174.google.com (mail-qt1-f174.google.com [209.85.160.174]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTPS id 75DD5687A94 for ; Fri, 8 Aug 2025 15:24:13 +0300 (EEST) Received: by mail-qt1-f174.google.com with SMTP id d75a77b69052e-4b0b696cab7so124051cf.1 for ; Fri, 08 Aug 2025 05:24:13 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754655852; x=1755260652; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=uiRzj1d+aBDGlvqPZe6bRXnU2bQu1AlKiWgT3MFZw2k=; 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Fri, 08 Aug 2025 05:24:11 -0700 (PDT) MIME-Version: 1.0 References: <20250808122142.2957853-1-alankelly@google.com> In-Reply-To: <20250808122142.2957853-1-alankelly@google.com> Date: Fri, 8 Aug 2025 14:23:58 +0200 X-Gm-Features: Ac12FXyw0E1VfcbfhPT9n1FPgrSCdW5Z1IlIQN7vZQ7UEHF9_F4FzF5JfaCd5RE Message-ID: To: ffmpeg-devel@ffmpeg.org X-Content-Filtered-By: Mailman/MimeDel 2.1.29 Subject: Re: [FFmpeg-devel] [PATCH] swscale: Disable avx2 hscale 8to15 on IceLake and below due to Intel Gather Data Sampling mitigation performance loss X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Alan Kelly via ffmpeg-devel Reply-To: FFmpeg development discussions and patches Cc: Alan Kelly Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: T24gRnJpLCBBdWcgOCwgMjAyNSBhdCAyOjIx4oCvUE0gQWxhbiBLZWxseSA8YWxhbmtlbGx5QGdv b2dsZS5jb20+IHdyb3RlOgoKPiBJbnRlbCBwcm92aWRlZCBhIG1pY3JvY29kZSB1cGRhdGUgdG8g bWl0aWdhdGUgdGhpcyBzZWN1cml0eQo+IHZ1bG5lcmFiaWxpdHkgd2hpY2ggaGFzIGEgaHVnZSBu ZWdhdGl2ZSBwZXJmb3JtYW5jZSBpbXBhY3Qgb24gZ2F0aGVyCj4gaW5zdHJ1Y3Rpb25zLiBUaGlz IG1lYW5zIHRoYXQgaHNjYWxlIDh0bzE1IGF2eDIsIHdoaWNoIHVzZXMgZ2F0aGVyCj4gZXh0ZW5z aXZlbHksIGlzIG5vIGxvbmdlciBmYXN0ZXIgdGhhbiBTU1NFMyBvbiBpbXBhY3RlZCBDUFVzLgo+ IC0tLQo+ICBsaWJhdnV0aWwveDg2L2NwdS5jIHwgNiArKysrLS0KPiAgMSBmaWxlIGNoYW5nZWQs IDQgaW5zZXJ0aW9ucygrKSwgMiBkZWxldGlvbnMoLSkKPgo+IGRpZmYgLS1naXQgYS9saWJhdnV0 aWwveDg2L2NwdS5jIGIvbGliYXZ1dGlsL3g4Ni9jcHUuYwo+IGluZGV4IGQ2Y2Q0ZmFiOWMuLjky M2M2M2UwYzQgMTAwNjQ0Cj4gLS0tIGEvbGliYXZ1dGlsL3g4Ni9jcHUuYwo+ICsrKyBiL2xpYmF2 dXRpbC94ODYvY3B1LmMKPiBAQCAtMjQ0LDkgKzI0NCwxMSBAQCBpbnQgZmZfZ2V0X2NwdV9mbGFn c194ODYodm9pZCkKPiAgICAgICAgICAgICAgZmFtaWx5ID09IDYgJiYgbW9kZWwgPCAyMykKPiAg ICAgICAgICAgICAgcnZhbCB8PSBBVl9DUFVfRkxBR19TU1NFM1NMT1c7Cj4KPiAtICAgICAgICAv KiBIYXN3ZWxsIGhhcyBzbG93IGdhdGhlciAqLwo+IC0gICAgICAgIGlmICgocnZhbCAmIEFWX0NQ VV9GTEFHX0FWWDIpICYmIGZhbWlseSA9PSA2ICYmIG1vZGVsIDwgNzApCj4gKyAgICAgICAgLyog SWNlIExha2UgYW5kIGJlbG93IGhhdmUgc2xvdyBnYXRoZXIgZHVlIHRvIEdhdGhlciBEYXRhIFNh bXBsaW5nCj4gKyAgICAgICAgICogbWl0aWdhdGlvbi4gKi8KPiArICAgICAgICBpZiAoKHJ2YWwg JiBBVl9DUFVfRkxBR19BVlgyKSAmJiBmYW1pbHkgPT0gNiAmJiBtb2RlbCA8IDE0Mykgewo+ICAg ICAgICAgICAgICBydmFsIHw9IEFWX0NQVV9GTEFHX1NMT1dfR0FUSEVSOwo+ICsgICAgICAgIH0K PiAgICAgIH0KPgo+ICAjZW5kaWYgLyogY3B1aWQgKi8KPiAtLQo+IDIuNTAuMS43MDMuZzQ0OTM3 MjM2MGYtZ29vZwo+CgoKaHR0cHM6Ly93d3cuaW50ZWwuY29tL2NvbnRlbnQvd3d3L3VzL2VuL2Rl dmVsb3Blci9hcnRpY2xlcy90ZWNobmljYWwvc29mdHdhcmUtc2VjdXJpdHktZ3VpZGFuY2UvdGVj aG5pY2FsLWRvY3VtZW50YXRpb24vZ2F0aGVyLWRhdGEtc2FtcGxpbmcuaHRtbAoKCgpCcm9hZHdl bGw6CmhzY2FsZV84X3RvXzE1X19mc180X2RzdFdfNTEyX2M6ICAgICAgICAgICAgICAgICAgICAg IDMzNzkuNSAoIDEuMDB4KQpoc2NhbGVfOF90b18xNV9fZnNfNF9kc3RXXzUxMl9zc2UyOiAgICAg ICAgICAgICAgICAgICAgNjE1LjcgKCA1LjQ5eCkKaHNjYWxlXzhfdG9fMTVfX2ZzXzRfZHN0V181 MTJfc3NzZTM6ICAgICAgICAgICAgICAgICAgIDYxMy40ICggNS41MXgpCmhzY2FsZV84X3RvXzE1 X19mc180X2RzdFdfNTEyX2F2eDI6ICAgICAgICAgICAgICAgICAgICA0OTUuNyAoIDYuODJ4KQoK U2t5bGFrZToKaHNjYWxlXzhfdG9fMTVfX2ZzXzRfZHN0V181MTJfYzogICAgICAgICAgICAgICAg ICAgICAgMzQxMS40ICggMS4wMHgpCmhzY2FsZV84X3RvXzE1X19mc180X2RzdFdfNTEyX3NzZTI6 ICAgICAgICAgICAgICAgICAgICA1OTEuMCAoIDUuNzd4KQpoc2NhbGVfOF90b18xNV9fZnNfNF9k c3RXXzUxMl9zc3NlMzogICAgICAgICAgICAgICAgICAgNTkxLjUgKCA1Ljc3eCkKaHNjYWxlXzhf dG9fMTVfX2ZzXzRfZHN0V181MTJfYXZ4MjogICAgICAgICAgICAgICAgICAgMTM4Ni4yICggMi40 NngpCgpDYXNjYWRlIExha2U6CmhzY2FsZV84X3RvXzE1X19mc180X2RzdFdfNTEyX2M6ICAgICAg ICAgICAgICAgICAgICAgIDMyMzEuMyAoIDEuMDB4KQpoc2NhbGVfOF90b18xNV9fZnNfNF9kc3RX XzUxMl9zc2UyOiAgICAgICAgICAgICAgICAgICAgNTE3LjkgKCA2LjI0eCkKaHNjYWxlXzhfdG9f MTVfX2ZzXzRfZHN0V181MTJfc3NzZTM6ICAgICAgICAgICAgICAgICAgIDUyMS42ICggNi4xOXgp CmhzY2FsZV84X3RvXzE1X19mc180X2RzdFdfNTEyX2F2eDI6ICAgICAgICAgICAgICAgICAgIDE3 NzUuMCAoIDEuODJ4KQoKU2FwcGhpcmUgUmFwaWRzOgpoc2NhbGVfOF90b18xNV9fZnNfNF9kc3RX XzUxMl9jOiAgICAgICAgICAgICAgICAgICAgICAxODQwLjAgKCAxLjAweCkKaHNjYWxlXzhfdG9f MTVfX2ZzXzRfZHN0V181MTJfc3NlMjogICAgICAgICAgICAgICAgICAgIDI4Ny45ICggNi4zOXgp CmhzY2FsZV84X3RvXzE1X19mc180X2RzdFdfNTEyX3Nzc2UzOiAgICAgICAgICAgICAgICAgICAy OTMuOCAoIDYuMjZ4KQpoc2NhbGVfOF90b18xNV9fZnNfNF9kc3RXXzUxMl9hdngyOiAgICAgICAg ICAgICAgICAgICAgMjE5LjIgKCA4LjQweCkKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX18KZmZtcGVnLWRldmVsIG1haWxpbmcgbGlzdApmZm1wZWctZGV2ZWxA ZmZtcGVnLm9yZwpodHRwczovL2ZmbXBlZy5vcmcvbWFpbG1hbi9saXN0aW5mby9mZm1wZWctZGV2 ZWwKClRvIHVuc3Vic2NyaWJlLCB2aXNpdCBsaW5rIGFib3ZlLCBvciBlbWFpbApmZm1wZWctZGV2 ZWwtcmVxdWVzdEBmZm1wZWcub3JnIHdpdGggc3ViamVjdCAidW5zdWJzY3JpYmUiLgo=