From nobody Fri Nov 22 09:27:29 2024 Received: from mail-yw1-f201.google.com (mail-yw1-f201.google.com [209.85.128.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BAB4D1E2843 for ; Wed, 9 Oct 2024 16:09:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728490151; cv=none; b=BP6dVaqAm6mZEN0+F1POJbMmONC7W1b/oZ3nVaJzVzvnVGePAp5LFrUIc5FBKaAJziln1A/2HYWUWTKH33IBHeAakFU90oBrHiheAmuqKYwSEQLw+K5/1H8vQPces4u3DEEOSeDKq521uSQ3X1k+xF5i6Vv9ImEkgS8ujCx1Ajs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728490151; c=relaxed/simple; bh=9AwPjYKc1tTHReZqpWWep5mg1gQzX/K7LnvZvyHbqdY=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=M2oM7a9mLJZFSaVxNAuycp8i5oaYP+MF0fdMCWnsjRcLY5OKSCuRzVed8rSfZHPqvrAO5XkZtwZdmy4VnufUiXEvDmvt5MEBQOyYTv1JsKMtjTdSdViDsVGeutl4cGuAXiklqly8qmUVK4yG0xYctXMfEcyHhUdiAQj/+Az070U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--ardb.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=Cea2cNNE; arc=none smtp.client-ip=209.85.128.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--ardb.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Cea2cNNE" Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-6886cd07673so316047b3.3 for ; Wed, 09 Oct 2024 09:09:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1728490149; x=1729094949; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=NGJVSpQBdEJnufx8hCONnOeuil0ovqsMOkm2dztukRI=; b=Cea2cNNESI+KsPNuy0EKjvFV1nZT8DwPXFvl9eaGQPW6xsPWiG4+WCL00zD4ues+BG +LbaegjmPedLyE038RMAtiwgMhjBA6NHLvJdiVUKc2Q1bfGjt6JH33rzR+2ruR60tGfA Cq/weGopehcSZuS0ZmUJj/VRwSlvbQyLnR6tC7L5pFVbV+4wsWEc0EbE8naM10QOiGtl D2BhdcMGfpQWOyf949WiopwvZGag41jU5I5VmlGz26Ba7WPEf8N1E0XD2Oyr8y7perSb 1Pniz9ZDLXkMu6jYHeAuSu+c9VfNkVE/FWdvdrLqKHvEZCGs3DfbPsJHhjArO7PdKJEi cvDQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728490149; x=1729094949; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=NGJVSpQBdEJnufx8hCONnOeuil0ovqsMOkm2dztukRI=; b=N+VC1TwirDl4MqiX89EPGmfSsnbRvLGB9rn6extbcxjpfZ7eZeMCZNgLOIkvZq6OT1 TqZMCbaJXHSvAgK4Vj7w5/3n26yNKT1jhE4m+CPiiNbtJrILJLib0iWxXTY5kuN3Ryd2 SLpiQLmRv9JufkDYQSxpj6LpZI1qUp9z5Rd6Xs5sqZoWtkgjKIaXd8bcoHLqZl3xgYdd V0q+9qPiBdaYX44HM3yzLv5LkU2rf9ic9iTHKos99LGkErXfYbco1rJlAfuee2niBBlG 5Dj0ynkVQrEjAMcSLVG4wgI/8sct/a/XnmYTnxjjJL1daNMpjZ0mQR4UUNFja2w9+vVW cf+A== X-Gm-Message-State: AOJu0YyWnC1KQihe4NeJJLCyUnRm8FNnuN4LS9fe/aASncg/kcbvShcN neiU0EdUBSWR3Eha3lgAHjgySvLdy0fKS5tmeO2e/TFaEGQJWh+fTUVVIa+w6oMxH5GEgSNNnB3 R37e5ep0yEEINGoas6dycdyLI7kQCVVwOIUhjuiQ/6V8lMTORDSJzTL8s3CTU5MYRzRAue2EAWk Suw6dnCZBIn9oZLzuRNrN8Z4LH0ec/Hg== X-Google-Smtp-Source: AGHT+IGcrpMuY+JUdG2304e6zDFXCrIjHXd1oEUvOKqh9gm+2UjFx6EJkS5NZtUvSSlBsb3U+IRyhrgW X-Received: from palermo.c.googlers.com ([fda3:e722:ac3:cc00:7b:198d:ac11:8138]) (user=ardb job=sendgmr) by 2002:a5b:b86:0:b0:e0e:8b26:484e with SMTP id 3f1490d57ef6-e28fe516b5amr2248276.8.1728490148421; Wed, 09 Oct 2024 09:09:08 -0700 (PDT) Date: Wed, 9 Oct 2024 18:04:41 +0200 In-Reply-To: <20241009160438.3884381-7-ardb+git@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241009160438.3884381-7-ardb+git@google.com> X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-Developer-Signature: v=1; a=openpgp-sha256; l=870; i=ardb@kernel.org; h=from:subject; bh=2aGbXNWak6ut+XUg0ikYbMbWC3UWCn0/S+aA/QUouf0=; b=owGbwMvMwCFmkMcZplerG8N4Wi2JIZ1t5azmxVvPswZHXo+eZV99ILxaoHCZkO2ShWG1fzZfj dj+ce7DjlIWBjEOBlkxRRaB2X/f7Tw9UarWeZYszBxWJpAhDFycAjARy+2MDA/ZrgbNPbtsYlDP rOq9G7Q6V597L3Jqq9sCbs3/wpEGh5MYGb78MV6wNolJSO21T0+OoIGEyFzrXQ6zdnhMFmFb/nZ dCgcA X-Mailer: git-send-email 2.47.0.rc0.187.ge670bccf7e-goog Message-ID: <20241009160438.3884381-9-ardb+git@google.com> Subject: [PATCH v3 2/5] x86/pvh: Use correct size value in GDT descriptor From: Ard Biesheuvel To: linux-kernel@vger.kernel.org Cc: Ard Biesheuvel , Jason Andryuk , Juergen Gross , Boris Ostrovsky , x86@kernel.org, xen-devel@lists.xenproject.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Ard Biesheuvel The limit field in a GDT descriptor is an inclusive bound, and therefore one less than the size of the covered range. Reviewed-by: Jason Andryuk Tested-by: Jason Andryuk Signed-off-by: Ard Biesheuvel --- arch/x86/platform/pvh/head.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/platform/pvh/head.S b/arch/x86/platform/pvh/head.S index ce4fd8d33da4..5a196fb3ebd8 100644 --- a/arch/x86/platform/pvh/head.S +++ b/arch/x86/platform/pvh/head.S @@ -224,7 +224,7 @@ SYM_CODE_END(pvh_start_xen) .section ".init.data","aw" .balign 8 SYM_DATA_START_LOCAL(gdt) - .word gdt_end - gdt_start + .word gdt_end - gdt_start - 1 .long _pa(gdt_start) /* x86-64 will overwrite if relocated. */ .word 0 SYM_DATA_END(gdt) --=20 2.47.0.rc0.187.ge670bccf7e-goog