Buildresult: powerpc-fixes/s390-defconfig/s390x-gcc11 built on Nov 6 2021, 02:05

kisskb

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Status:	OK
Date/Time:	Nov 6 2021, 02:05
Duration:	0:07:02.831472
Builder:	blade4b
Revision:	KVM: PPC: Book3S HV: Use GLOBAL_TOC for kvmppc_h_set_dabr/xdabr() (`11c41994b1c3a7cb08c87883cc19d469258882b6)`
Target:	powerpc-fixes/s390-defconfig/s390x-gcc11
Branch:	powerpc-fixes
Compiler:	s390x-gcc11 (s390-linux-gcc (GCC) 11.1.0 / GNU ld (GNU Binutils) 2.36.1)
Config:	defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify 11c41994b1c3a7cb08c87883cc19d469258882b6^{commit} # git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test # git rev-parse -q --verify 11c41994b1c3a7cb08c87883cc19d469258882b6^{commit} 11c41994b1c3a7cb08c87883cc19d469258882b6 # git checkout -q -f -B kisskb 11c41994b1c3a7cb08c87883cc19d469258882b6 # git clean -qxdf # < git log -1 # commit 11c41994b1c3a7cb08c87883cc19d469258882b6 # Author: Michael Ellerman <mpe@ellerman.id.au> # Date: Fri Sep 24 01:10:31 2021 +1000 # # KVM: PPC: Book3S HV: Use GLOBAL_TOC for kvmppc_h_set_dabr/xdabr() # # kvmppc_h_set_dabr(), and kvmppc_h_set_xdabr() which jumps into # it, need to use _GLOBAL_TOC to setup the kernel TOC pointer, because # kvmppc_h_set_dabr() uses LOAD_REG_ADDR() to load dawr_force_enable. # # When called from hcall_try_real_mode() we have the kernel TOC in r2, # established near the start of kvmppc_interrupt_hv(), so there is no # issue. # # But they can also be called from kvmppc_pseries_do_hcall() which is # module code, so the access ends up happening with the kvm-hv module's # r2, which will not point at dawr_force_enable and could even cause a # fault. # # With the current code layout and compilers we haven't observed a fault # in practice, the load hits somewhere in kvm-hv.ko and silently returns # some bogus value. # # Note that we we expect p8/p9 guests to use the DAWR, but SLOF uses # h_set_dabr() to test if sc1 works correctly, see SLOF's # lib/libhvcall/brokensc1.c. # # Fixes: c1fe190c0672 ("powerpc: Add force enable of DAWR on P9 option") # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Reviewed-by: Daniel Axtens <dja@axtens.net> # Link: https://lore.kernel.org/r/20210923151031.72408-1-mpe@ellerman.id.au # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/s390-linux/bin/s390-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/s390-linux/bin/s390-linux-ld --version # < git log --format=%s --max-count=1 11c41994b1c3a7cb08c87883cc19d469258882b6 # < make -s -j 24 ARCH=s390 O=/kisskb/build/powerpc-fixes_s390-defconfig_s390x-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/s390-linux/bin/s390-linux- defconfig # < make -s -j 24 ARCH=s390 O=/kisskb/build/powerpc-fixes_s390-defconfig_s390x-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/s390-linux/bin/s390-linux- help # make -s -j 24 ARCH=s390 O=/kisskb/build/powerpc-fixes_s390-defconfig_s390x-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/s390-linux/bin/s390-linux- olddefconfig # make -s -j 24 ARCH=s390 O=/kisskb/build/powerpc-fixes_s390-defconfig_s390x-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/s390-linux/bin/s390-linux- Completed OK # rm -rf /kisskb/build/powerpc-fixes_s390-defconfig_s390x-gcc11 # Build took: 0:07:02.831472

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