From owner-freebsd-virtualization@freebsd.org Mon Feb 13 13:36:30 2017 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 13B7DCDD37A for ; Mon, 13 Feb 2017 13:36:30 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id DF08A973 for ; Mon, 13 Feb 2017 13:36:29 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v1DDaS1h066802 for ; Mon, 13 Feb 2017 13:36:29 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-virtualization@FreeBSD.org Subject: [Bug 211746] [Hyper-V] UEFI VM can't boot from the iso installation disk Date: Mon, 13 Feb 2017 13:36:29 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: decui@microsoft.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Feb 2017 13:36:30 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211746 --- Comment #4 from Dexuan Cui --- (In reply to Marcel Moolenaar from comment #3) Hi Marcel, Thank you for the quick help! Yes, I checked all the AllocatePages() calls and they all succeeded, i.e. returning 0. I found the crash happened in=20 elf64_exec() -> trampoline() -> efi_copy_finish -> *dst++ =3D *src++; In efi_copy_finish(), I added some printf's to dump the values of the varilables: /boot/kernel/kernel text=3D0xfe3048 data=3D0x128b68+0x207fa0 syms=3D[0x8+0x146f88+0x8+ Booting... Start @ 0xffffffff802e2640 ... EFI framebuffer information: addr, size 0xf8000000, 0x800000 dimensions 1024 x 768 stride 1024 masks 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000 efi_copy_finish : staging=3D0xf37cb000 efi_copy_finish : staging_end=3D0xf67cb000 efi_copy_finish : staging_offset=3D0xf35cb000 efi_copy_finish : src=3D0xf37cb000, dst=3D0x200000, last=3D0xf67cb000 If I change the line last =3D (uint64_t *)staging_end; to=20 last =3D (uint64_t *)staging + (1024*1024*45); The crash won't happen and the kernel can boot fine. I'm using the releng/10.3 branch, where EFI_STAGING_SIZE is 48MB. This is to say, the kernel can boot fine if I use EFI_STAGING_SIZE=3D45MB. Any idea? Why do you think is it a Hyper-V firmware bug in AllocatePages()? I'm not familar with UEFI Boot Services. :-) I'll check the memory map before/after the call to AllocatePages(). I'm going to use sys/boot/efi/loader/main.c: command_memmap() as an example= to call GetMemoryMap. --=20 You are receiving this mail because: You are the assignee for the bug.=