On Fri, Mar 20, 2020 at 9:38 AM Christian Ehrhardt <christian.ehrha...@canonical.com> wrote: > > Some hardened gcc v9 compilers (such as the one in Ubuntu) > default this option which for seabios leads to emulation errors > when running in KVM (does not trigger in TCG) on older intel > chips of the Penryn generation (~2006-2008).
Hi, other than the request to add "endbr32/endbr64 interpretation failures" to the commit message there was no other feedback. This was done in v2 and since then nothing happened, therefore I wanted to ping if this can be accepted into master? > The symptom appears as endbr32/endbr64 interpretation failures > and in KVM it looks like: > KVM internal error. Suberror: 1 > emulation failure > EAX=00000000 EBX=00000000 ECX=000086d4 EDX=00000000 > ESI=00000000 EDI=00000000 EBP=000086d4 ESP=00006d7c > EIP=00007acf EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 > ES =0000 00000000 ffffffff 00809300 > CS =f000 000f0000 ffffffff 00809b00 > SS =0000 00000000 ffffffff 00809300 > DS =0000 00000000 ffffffff 00809300 > FS =0000 00000000 ffffffff 00809300 > GS =0000 00000000 ffffffff 00809300 > LDT=0000 00000000 0000ffff 00008200 > TR =0000 00000000 0000ffff 00008b00 > GDT= 000f6200 00000037 > IDT= 00000000 000003ff > CR0=00000010 CR2=00000000 CR3=00000000 CR4=00000000 > DR0=0000000000000000 DR1=0000000000000000 > DR2=0000000000000000 DR3=0000000000000000 > DR6=00000000ffff0ff0 DR7=0000000000000400 > EFER=0000000000000000 > Code=b8 90 d9 00 00 66 e8 6b f7 ff ff 66 b8 0a 00 00 > 00 e9 61 f2 <f3> 0f 1e fb 66 57 66 56 66 53 66 53 > 66 89 c7 67 66 89 14 24 66 89 ce 66 e8 15 f8 ff ff 88 > > URL: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1866870 > Signed-off-by: Christian Ehrhardt <christian.ehrha...@canonical.com> > --- > Makefile | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/Makefile b/Makefile > index 5f7d5370..9e8188e5 100644 > --- a/Makefile > +++ b/Makefile > @@ -69,6 +69,7 @@ COMMONCFLAGS += $(call > cc-option,$(CC),-fno-stack-protector,) > COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,) > COMMONCFLAGS += $(call cc-option,$(CC),-fstack-check=no,) > COMMONCFLAGS += $(call cc-option,$(CC),-Wno-address-of-packed-member,) > +COMMONCFLAGS += $(call cc-option,$(CC),-fcf-protection=none,) > COMMA := , > > CFLAGS32FLAT := $(COMMONCFLAGS) -DMODE16=0 -DMODESEGMENT=0 > -- > 2.25.1 > -- Christian Ehrhardt Staff Engineer, Ubuntu Server Canonical Ltd _______________________________________________ SeaBIOS mailing list -- seabios@seabios.org To unsubscribe send an email to seabios-le...@seabios.org
