Date: Mon, 13 Feb 2017 13:36:29 +0000 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 Message-ID: <bug-211746-27103-yomxUTZnxv@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-211746-27103@https.bugs.freebsd.org/bugzilla/> References: <bug-211746-27103@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211746 --- Comment #4 from Dexuan Cui <decui@microsoft.com> --- (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.=
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