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([185.25.67.249]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a9a29749663sm41590566b.64.2024.10.15.01.25.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Oct 2024 01:25:24 -0700 (PDT) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 0767adbb-8acf-11ef-99a2-01e77a169b0f DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloud.com; s=cloud; t=1728980726; x=1729585526; darn=lists.xenproject.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=JPO73Ee+gUhp/QdwEt6rbkUZv+DPxFBuM2HxdwBJt8g=; b=YK7bXFlPcrFqHVQphJJs0eBs2UzaEwmg4u4RlgW8ScV1FP3Mom1wowtS7xGySmOmv0 bcKGd/G6QNpaK3O4aPfQHN+IfbOB1/hCzABWB5OVFAuF6quO6zOKf07JmRZuJv0d4Yfz 3DCm8XfaUTYOYh0a0djQatTZFHroxYPoUMCuc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728980726; x=1729585526; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=JPO73Ee+gUhp/QdwEt6rbkUZv+DPxFBuM2HxdwBJt8g=; b=Gk6keVAg7nYVaMY3WIp2/ZdalRLoPPE0C+3X8tkSxd/vseLO5mcIARWcO7EXCMxL78 iRRaJd9NBAHgS/lUGGTH55KNp9tZAhLmtP4p/yjlAYBWII5udiDtb6BR12K0gYCNQDV2 FqWdaiCIhDWx4TfG4BfSBCMzCas4camStzXtVPjbpI+j/pXE21XsEvN6liPOgU0+xQD4 foVma7uF7N1czLPnxyVtUo4pU1x0Jhli2XbYdLX1Rtjse34feJbXwL23xr5lOnudNt9h LLIsk5RsaC7K6XGHUiR8HAY0YKFHPtY6TUh7xv3SlRDKMBKO+LFtCQ2gGhUtBYJKwM8l xzUw== X-Gm-Message-State: AOJu0YwfAA6CHpa/dDgWzGGfRyk2C/62rUE/iuoAaGm+1qRwIqTevBYL VGT9kNzvGCpjdpn6FBHvxSFKL8vcLZKPmuakA6qlM1ElPjuniWFu9AGIgzd4+MPL6c/K0Pb81Eq 6 X-Google-Smtp-Source: AGHT+IEpcEqQDW+bs96iXMea6FXPIQJxU+sMVnJveA9vSV+igd1zzb17GQIiKtbznJ5/DbwHk3BbJQ== X-Received: by 2002:a17:907:940e:b0:a99:4152:1cb4 with SMTP id a640c23a62f3a-a99b9585801mr1221023466b.42.1728980725546; Tue, 15 Oct 2024 01:25:25 -0700 (PDT) From: Frediano Ziglio To: xen-devel@lists.xenproject.org Cc: Frediano Ziglio , "Daniel P. Smith" , =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?= , Jan Beulich , Andrew Cooper , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Subject: [PATCH v10 1/2] x86/boot: Align mbi2.c stack to 16 bytes Date: Tue, 15 Oct 2024 09:25:12 +0100 Message-Id: <20241015082513.2477806-2-frediano.ziglio@cloud.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241015082513.2477806-1-frediano.ziglio@cloud.com> References: <20241015082513.2477806-1-frediano.ziglio@cloud.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @cloud.com) X-ZM-MESSAGEID: 1728980773871116600 Content-Type: text/plain; charset="utf-8" Doing previous testing with an Alder Lake Intel machine with the "x86/boot: Improve MBI2 structure check" commit test started to fail. Removing the commit makes the tests succeed however there was not apparent reason (looking at the code) for the failure. So I instrumented code to output the structure and tested code with this extracted data with and without the mentioned commit and results were the same. Compiled assembly code from lab was also fine beside not keeping the 16-byte alignment for the stack. Turning on stack alignment solve the problem on Alder Lake machine. Fixes: eb21ce14d709 ('x86/boot: Rewrite EFI/MBI2 code partly in C') Signed-off-by: Frediano Ziglio Reviewed-by: Jan Beulich --- Changes since v8: - added "Fixes:" line; - typo in commit message: Adler -> Alder; - add ".init" to mbi2.o; - reduce difference. Changes since v9: - minor commit message fix; - added Reviewed-by. --- xen/arch/x86/efi/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/xen/arch/x86/efi/Makefile b/xen/arch/x86/efi/Makefile index 7e2b5c07de..c6678652fc 100644 --- a/xen/arch/x86/efi/Makefile +++ b/xen/arch/x86/efi/Makefile @@ -9,11 +9,11 @@ $(obj)/%.o: $(src)/%.ihex FORCE $(obj)/boot.init.o: $(obj)/buildid.o =20 $(call cc-option-add,cflags-stack-boundary,CC,-mpreferred-stack-boundary= =3D4) -$(addprefix $(obj)/,$(EFIOBJ-y)): CFLAGS_stack_boundary :=3D $(cflags-stac= k-boundary) +$(addprefix $(obj)/,$(EFIOBJ-y) mbi2.init.o): CFLAGS_stack_boundary :=3D $= (cflags-stack-boundary) =20 obj-y :=3D common-stub.o stub.o obj-$(XEN_BUILD_EFI) :=3D $(filter-out %.init.o,$(EFIOBJ-y)) obj-bin-$(XEN_BUILD_EFI) :=3D $(filter %.init.o,$(EFIOBJ-y)) -obj-bin-y +=3D mbi2.o +obj-bin-y +=3D mbi2.init.o extra-$(XEN_BUILD_EFI) +=3D buildid.o relocs-dummy.o nocov-$(XEN_BUILD_EFI) +=3D stub.o --=20 2.34.1