Re: [Xen-devel] [lersek@xxxxxxxxxx: Re: [PATCH v3] OvmfPkg/build.sh: Make GCC5 the default toolchain, catch GCC43 and earlier]

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On Fri, Nov 25, 2016 at 08:24:00AM -0500, Konrad Rzeszutek Wilk wrote:
> Hey Wei, Anthony,
> 
> Are you guys OK pushing this commit: 2667ad40919a in the
> git://xenbits.xen.org/ovmf.git     
> 
> tree? Without this I cannot build Xen 4.8 with TianoCore
> (--enable-ovmf).

Can you actually start a guest this OVMF (when it's build on Fedora Core
25, and built using the GCC5 toolchain)?

On Arch Linux (gcc (GCC) 6.2.1 20160830), if I build OVMF with the GCC5
toolchain, the firmware fail to boot.

For reference, I have this error:
!!!! X64 Exception Type - 06(#UD - Invalid Opcode)  CPU Apic ID - 00000000 !!!!
RIP  - 000000001F26AF6B, CS  - 0000000000000038, RFLAGS - 0000000000010202
RAX  - 0000000000000001, RCX - 000000001F26AF51, RDX - 0000000000000004
RBX  - 0000000000000000, RSP - 000000001F43C510, RBP - 000000001E583D18
RSI  - 0000000000000003, RDI - 0000000000000001
R8   - 0000000000000000, R9  - 0000000000000000, R10 - 000000001E58DB98
R11  - 0000000000000002, R12 - 000000001E58D898, R13 - 0000000000000000
R14  - 000000001E58D8A0, R15 - 000000001F26D001
DS   - 0000000000000030, ES  - 0000000000000030, FS  - 0000000000000030
GS   - 0000000000000030, SS  - 0000000000000030
CR0  - 0000000080000033, CR2 - 0000000000000000, CR3 - 000000001F3DB000
CR4  - 0000000000000668, CR8 - 0000000000000000
DR0  - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000
DR3  - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400
GDTR - 000000001F3C9A98 0000000000000047, LDTR - 0000000000000000
IDTR - 000000001EB0A018 0000000000000FFF,   TR - 0000000000000000
FXSAVE_STATE - 000000001F43C170
!!!! Find PE image 
./Build/OvmfX64/DEBUG_GCC5/X64/OvmfPkg/XenBusDxe/XenBusDxe/DEBUG/XenBusDxe.dll 
(ImageBase=000000001F266000, EntryPoint=000000001F2669D5) !!!!

I'll try to investigate, and report upstream.

-- 
Anthony PERARD

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