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([185.25.67.249]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a9a29817036sm299115166b.124.2024.10.17.06.31.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Oct 2024 06:31:36 -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: 22c4da06-8c8c-11ef-99a3-01e77a169b0f DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloud.com; s=cloud; t=1729171897; x=1729776697; 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=tUEXdxMnhhDzo/2gzjHB2TfqPR4THpXflyTPiqcQYhg=; b=hfvgJ7F4jiCfxikslPkJ6i1P5OKOMRuqlMUEX4FX+0Ov9iSWe8x1Qzzy0Qw2W/6/1i 5aK9JJfMm81DG9KzAWWB8Ho4/YAuuFgLzG5hG1xxbhj2jPvDAZr55HlSlLl4JoMacuc+ +Y6A2mNiJuNAtldy3g4k8xC1d1r8cJLLuE4w0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729171897; x=1729776697; 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=tUEXdxMnhhDzo/2gzjHB2TfqPR4THpXflyTPiqcQYhg=; b=Q3g1m7wEbR09fKNOvAI3qk9VL5bcO5BgeOrXcxeQokydv22z6MIVx3w9OHkdIwPESR cDQ4NP4RihatTWQdnTDE53HXdRDaRpsQagid+cF9YFLnQLJP4IXHtbxOhv82EtMlIR5w PqymYiCTBAnWfh1u8fR8gTocNfNPmUl6WXcn7Ty4F7KkL4cJADk/VpkO0hafupcwNd2R touddLFHnCbCRw8UiB2NHKWldr9gelo/a7/2vaw+AJP7WwfB2WbUUVZLCb07IP4Ueyi1 uYoVZc596uArrTzmCmXFEZ3/rvo+KNtt1INpc/EBBb4fJPas+T5OsLlPjAnQDUqiAHZ3 REag== X-Gm-Message-State: AOJu0YxPFToJvw5H5wEiw5qRQWpCKYM9OcrxLFPhAgjjaiN6jbgMfEFk a7B5BBsfNpzh24g6FGcxmfD3I+5WS+cB0i55JcmsMayjOm7I4VeeZYkbZ+aBHiihI6Q7M0Cy7wl H X-Google-Smtp-Source: AGHT+IG1sYUmoX/vjQ7f1uakOXeaM56klxTlFbUCF5mFMb9u+u+inCKeGcvEet19Mzb6gBceym8AIQ== X-Received: by 2002:a17:907:96a1:b0:a99:e82a:87ee with SMTP id a640c23a62f3a-a99e82a8932mr1790616066b.57.1729171897068; Thu, 17 Oct 2024 06:31:37 -0700 (PDT) From: Frediano Ziglio To: xen-devel@lists.xenproject.org Cc: Frediano Ziglio , Jan Beulich , Andrew Cooper , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Subject: [PATCH v6 4/5] x86/boot: Use trampoline_phys variable directly from C code Date: Thu, 17 Oct 2024 14:31:22 +0100 Message-Id: <20241017133123.1946204-5-frediano.ziglio@cloud.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241017133123.1946204-1-frediano.ziglio@cloud.com> References: <20241017133123.1946204-1-frediano.ziglio@cloud.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @cloud.com) X-ZM-MESSAGEID: 1729171945311116600 Content-Type: text/plain; charset="utf-8" No more need to pass from assembly code. Signed-off-by: Frediano Ziglio Reviewed-by: Andrew Cooper --- Changes since v1: - split the 2 variable changes into 2 commits. Changes since v2: - revert commit order; - avoid useless casts. --- xen/arch/x86/boot/head.S | 6 +----- xen/arch/x86/boot/reloc.c | 8 ++++++-- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/xen/arch/x86/boot/head.S b/xen/arch/x86/boot/head.S index 5da7ac138f..dcda91cfda 100644 --- a/xen/arch/x86/boot/head.S +++ b/xen/arch/x86/boot/head.S @@ -510,13 +510,9 @@ trampoline_setup: mov %esi, sym_esi(xen_phys_start) mov %esi, sym_esi(trampoline_xen_phys_start) =20 - /* Get bottom-most low-memory stack address. */ - mov sym_esi(trampoline_phys), %ecx - add $TRAMPOLINE_SPACE,%ecx - /* Save Multiboot / PVH info struct (after relocation) for later u= se. */ mov %ebx, %edx /* Multiboot / PVH information address= . */ - /* reloc(magic/eax, info/edx, trampoline/ecx) using fastcall.= */ + /* reloc(magic/eax, info/edx) using fastcall. */ call reloc =20 #ifdef CONFIG_PVH_GUEST diff --git a/xen/arch/x86/boot/reloc.c b/xen/arch/x86/boot/reloc.c index 707d9c5f15..e50e161b27 100644 --- a/xen/arch/x86/boot/reloc.c +++ b/xen/arch/x86/boot/reloc.c @@ -19,6 +19,9 @@ #include #include #include +#include + +#include =20 #include =20 @@ -344,9 +347,10 @@ static multiboot_info_t *mbi2_reloc(uint32_t mbi_in, m= emctx *ctx) } =20 /* SAF-1-safe */ -void *reloc(uint32_t magic, uint32_t in, uint32_t trampoline) +void *reloc(uint32_t magic, uint32_t in) { - memctx ctx =3D { trampoline }; + /* Get bottom-most low-memory stack address. */ + memctx ctx =3D { trampoline_phys + TRAMPOLINE_SPACE }; =20 switch ( magic ) { --=20 2.34.1