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([185.25.67.249]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a99a80dc290sm186131566b.155.2024.10.11.01.52.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Oct 2024 01:52:57 -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: 36c4745f-87ae-11ef-a0bd-8be0dac302b0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloud.com; s=cloud; t=1728636778; x=1729241578; 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=lRozCPE4hLmDkWuRsnYBmVRqJbay8YlPxBu7rNpVYHk=; b=j8oRP/zvijd4/gyzqIqGO08n+9NwH/QrAW4apd4wVReRtorYq7OShF+PNI4dX1BY5o z9j7jiQoWpphrj/Hl3YhFFHZfTe4Q4e0ZL+J15dvPW6wf9UD9rfOtaEPs0N9PExvi43t OlUR8j8ASDVbCA+CzOYyTO8f7TA8bihFBhfDM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728636778; x=1729241578; 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=lRozCPE4hLmDkWuRsnYBmVRqJbay8YlPxBu7rNpVYHk=; b=dF5X2MKx95CqGBmrysz/XpHKjMPeIw2XViJoTacyO86RxGrd10/e8iZ4fyQ2AWGUey e/TeMdchO4erBCwbrsxnnNCYLNSpTLIQpWZKHyZMlFalUZvPnnIcvz1umcdSYCju5N+p iOEh0v7VG9UbT6vbBsdIwF9XuP3g/zih6u75V1u0WTsn4tq0Yy5FOR4KWwfgZXA7B9qD fceyPW9NjIhI/KJvXQcP54udBBUrGsDLZQEJJBi5qZZ7goETXMGAvvAQHgER0MrZfwQg pTFhFCOhlUS5yJ7KlEsqpKp7y5X6Go9NMbYX3PV0bsWirhuGCib/kopRPAFpTSXU2gCH R1aA== X-Gm-Message-State: AOJu0Ywon4fBEwDHq/8t4ug/FwhSfrzmma+gA4mzUCWcVuLOlI9Qtlh0 nO6qWgMfuvCDobYws7u61NfENF0zvXb12UalvT1UB1yRvPaDZq90qU1pkfIGLgtV5k4DfivwcBI e X-Google-Smtp-Source: AGHT+IGDJrAsvWMO6oVkUaso7GKsUX42/Ol93PeUTzRMQ/Xv3G8+ltoWMcNCFuW8P4t0E1tmoaMuEw== X-Received: by 2002:a05:6512:3992:b0:536:a695:9414 with SMTP id 2adb3069b0e04-539da3b205amr1335442e87.6.1728636777686; Fri, 11 Oct 2024 01:52:57 -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 v3 3/5] x86/boot: Use boot_vid_info variable directly from C code Date: Fri, 11 Oct 2024 09:52:42 +0100 Message-Id: <20241011085244.432368-4-frediano.ziglio@cloud.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241011085244.432368-1-frediano.ziglio@cloud.com> References: <20241011085244.432368-1-frediano.ziglio@cloud.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @cloud.com) X-ZM-MESSAGEID: 1728636809258116600 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. --- xen/arch/x86/boot/build32.lds.S | 1 + xen/arch/x86/boot/head.S | 10 +--------- xen/arch/x86/boot/reloc.c | 13 +++++-------- 3 files changed, 7 insertions(+), 17 deletions(-) diff --git a/xen/arch/x86/boot/build32.lds.S b/xen/arch/x86/boot/build32.ld= s.S index 9d09e3adbd..26ef609523 100644 --- a/xen/arch/x86/boot/build32.lds.S +++ b/xen/arch/x86/boot/build32.lds.S @@ -46,6 +46,7 @@ SECTIONS DECLARE_IMPORT(__trampoline_seg_start); DECLARE_IMPORT(__trampoline_seg_stop); DECLARE_IMPORT(trampoline_phys); + DECLARE_IMPORT(boot_vid_info); . =3D . + GAP; *(.text) *(.text.*) diff --git a/xen/arch/x86/boot/head.S b/xen/arch/x86/boot/head.S index ade2c5c43d..5da7ac138f 100644 --- a/xen/arch/x86/boot/head.S +++ b/xen/arch/x86/boot/head.S @@ -514,18 +514,10 @@ trampoline_setup: mov sym_esi(trampoline_phys), %ecx add $TRAMPOLINE_SPACE,%ecx =20 -#ifdef CONFIG_VIDEO - lea sym_esi(boot_vid_info), %edx -#else - xor %edx, %edx -#endif - /* Save Multiboot / PVH info struct (after relocation) for later u= se. */ - push %edx /* Boot video info to be filled from M= B2. */ mov %ebx, %edx /* Multiboot / PVH information address= . */ - /* reloc(magic/eax, info/edx, trampoline/ecx, video/stk) usin= g fastcall. */ + /* reloc(magic/eax, info/edx, trampoline/ecx) using fastcall.= */ call reloc - add $4, %esp =20 #ifdef CONFIG_PVH_GUEST cmpb $0, sym_esi(pvh_boot) diff --git a/xen/arch/x86/boot/reloc.c b/xen/arch/x86/boot/reloc.c index 94b078d7b1..707d9c5f15 100644 --- a/xen/arch/x86/boot/reloc.c +++ b/xen/arch/x86/boot/reloc.c @@ -176,7 +176,7 @@ static multiboot_info_t *mbi_reloc(uint32_t mbi_in, mem= ctx *ctx) return mbi_out; } =20 -static multiboot_info_t *mbi2_reloc(uint32_t mbi_in, uint32_t video_out, m= emctx *ctx) +static multiboot_info_t *mbi2_reloc(uint32_t mbi_in, memctx *ctx) { const multiboot2_fixed_t *mbi_fix =3D _p(mbi_in); const multiboot2_memory_map_t *mmap_src; @@ -185,7 +185,7 @@ static multiboot_info_t *mbi2_reloc(uint32_t mbi_in, ui= nt32_t video_out, memctx memory_map_t *mmap_dst; multiboot_info_t *mbi_out; #ifdef CONFIG_VIDEO - struct boot_video_info *video =3D NULL; + struct boot_video_info *video =3D &boot_vid_info; #endif uint32_t ptr; unsigned int i, mod_idx =3D 0; @@ -290,12 +290,11 @@ static multiboot_info_t *mbi2_reloc(uint32_t mbi_in, = uint32_t video_out, memctx =20 #ifdef CONFIG_VIDEO case MULTIBOOT2_TAG_TYPE_VBE: - if ( video_out ) + if ( video ) { const struct vesa_ctrl_info *ci; const struct vesa_mode_info *mi; =20 - video =3D _p(video_out); ci =3D (const void *)get_mb2_data(tag, vbe, vbe_control_in= fo); mi =3D (const void *)get_mb2_data(tag, vbe, vbe_mode_info); =20 @@ -321,7 +320,6 @@ static multiboot_info_t *mbi2_reloc(uint32_t mbi_in, ui= nt32_t video_out, memctx if ( (get_mb2_data(tag, framebuffer, framebuffer_type) !=3D MULTIBOOT2_FRAMEBUFFER_TYPE_RGB) ) { - video_out =3D 0; video =3D NULL; } break; @@ -346,8 +344,7 @@ static multiboot_info_t *mbi2_reloc(uint32_t mbi_in, ui= nt32_t video_out, memctx } =20 /* SAF-1-safe */ -void *reloc(uint32_t magic, uint32_t in, uint32_t trampoline, - uint32_t video_info) +void *reloc(uint32_t magic, uint32_t in, uint32_t trampoline) { memctx ctx =3D { trampoline }; =20 @@ -357,7 +354,7 @@ void *reloc(uint32_t magic, uint32_t in, uint32_t tramp= oline, return mbi_reloc(in, &ctx); =20 case MULTIBOOT2_BOOTLOADER_MAGIC: - return mbi2_reloc(in, video_info, &ctx); + return mbi2_reloc(in, &ctx); =20 case XEN_HVM_START_MAGIC_VALUE: if ( IS_ENABLED(CONFIG_PVH_GUEST) ) --=20 2.34.1