On Fri, Jul 12, 2024 at 6:26 AM Ross Burton <[email protected]> wrote: > > On 12 Jul 2024, at 00:42, Khem Raj via lists.openembedded.org > <[email protected]> wrote: > > > > With latest qemu several places where qemu-usermode is used e.g. > > nodejs, qtwebengine, chromium, the builds are failing form armv8a > > tuned machines (e.g. tegra) which is due to qemu crash ( SIGILL ) > > encoutered when 'max' ISA is used ( which is default ), max seems > > to use neoverse-n2 equivalent features, which is evident that SIGILL > > also happens when using -cpu neoverse-v2, therefore explicitly select > > neoverse-v1 for ISA, which works and covers almost all (if not all) > > cpu tunes for armv8 we have. > > > > Signed-off-by: Khem Raj <[email protected]> > > --- > > meta/conf/machine/include/arm/arch-arm64.inc | 5 +++++ > > 1 file changed, 5 insertions(+) > > > > diff --git a/meta/conf/machine/include/arm/arch-arm64.inc > > b/meta/conf/machine/include/arm/arch-arm64.inc > > index 832d0000acb..9639911d33b 100644 > > --- a/meta/conf/machine/include/arm/arch-arm64.inc > > +++ b/meta/conf/machine/include/arm/arch-arm64.inc > > @@ -42,3 +42,8 @@ TARGET_FPU = "${@bb.utils.contains('TUNE_FEATURES', > > 'aarch64', '${TARGET_FPU_64} > > # support these they're meaningless NOP instructions, so there's very little > > # reason not to. > > TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', ' > > -mbranch-protection=standard', '', d)}" > > + > > +# Fix qemu-user crashes while building nodejs/chromium/qtwebengine, > > defaults ISA is max and it generate SIGILLs > > +# qemu: uncaught target signal 4 (Illegal instruction) - core dumped > > +# Select the superset ISA > > +QEMU_EXTRAOPTIONS_armv8a = "-cpu neoverse-v1” > > This is definitely the wrong place for this. What machine are you using > here? Can you get a gdb to identify what the instruction failing is? >
Looked more into it last night. it happens only with clang/trunk seems to work with binaries built with gcc and clang18 , I guess hold on to it, until further triage. > Ross >
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