Buildresult: powerpc-fixes/arm64-defconfig/arm64-gcc5 built on Nov 6 2021, 18:07

kisskb

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Status:	OK
Date/Time:	Nov 6 2021, 18:07
Duration:	0:05:57.670673
Builder:	ka1
Revision:	KVM: PPC: Book3S HV: Use GLOBAL_TOC for kvmppc_h_set_dabr/xdabr() (`7222b01e9353ba0a944a1bf5dd2f669a15e2c3df)`
Target:	powerpc-fixes/arm64-defconfig/arm64-gcc5
Branch:	powerpc-fixes
Compiler:	arm64-gcc5 (aarch64-linux-gcc.br_real (Buildroot 2016.11-git-00613-ge98b4dd) 5.4.0 / GNU ld (GNU Binutils) 2.25.1)
Config:	defconfig (download)
Log:	Download original Possible warnings (2) warning: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum warning: LSE atomics not supported by binutils Full Log # git rev-parse -q --verify 7222b01e9353ba0a944a1bf5dd2f669a15e2c3df^{commit} 7222b01e9353ba0a944a1bf5dd2f669a15e2c3df already have revision, skipping fetch # git checkout -q -f -B kisskb 7222b01e9353ba0a944a1bf5dd2f669a15e2c3df # git clean -qxdf # < git log -1 # commit 7222b01e9353ba0a944a1bf5dd2f669a15e2c3df # 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/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version # < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-ld --version # < git log --format=%s --max-count=1 7222b01e9353ba0a944a1bf5dd2f669a15e2c3df # < make -s -j 48 ARCH=arm64 O=/kisskb/build/powerpc-fixes_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- defconfig # < make -s -j 48 ARCH=arm64 O=/kisskb/build/powerpc-fixes_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- help # make -s -j 48 ARCH=arm64 O=/kisskb/build/powerpc-fixes_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- olddefconfig # make -s -j 48 ARCH=arm64 O=/kisskb/build/powerpc-fixes_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- warning: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum warning: LSE atomics not supported by binutils Completed OK # rm -rf /kisskb/build/powerpc-fixes_arm64-defconfig_arm64-gcc5.4 # Build took: 0:05:57.670673

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