powerpc: add SMP and IPI support

powerpc SMP support is very primitive and does not set up a first-class
runtime environment for secondary CPUs.

This reworks SMP support, and provides a complete C

powerpc: add SMP and IPI support

powerpc SMP support is very primitive and does not set up a first-class
runtime environment for secondary CPUs.

This reworks SMP support, and provides a complete C and harness
environment for the secondaries, including interrupt handling, as well
as IPI support.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-ID: <20240504122841.1177683-17-npiggin@gmail.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

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Switch the order of the parameters in report() and report_xfail()

Commit c09c54c66b1df ("lib: use an argument which doesn't require
default argument promotion") fixed a warning that occurs with Clan

Switch the order of the parameters in report() and report_xfail()

Commit c09c54c66b1df ("lib: use an argument which doesn't require
default argument promotion") fixed a warning that occurs with Clang,
but introduced a regression: If the "pass" parameter is a value
which has only set the condition bits in the upper 32 bits of a
64 bit value, the condition is now false since the value is truncated
to "unsigned int" so that the upper bits are simply discarded.

We fixed it by reverting the commit, but that of course also means
trouble with Clang again. We can not use "bool" if it is the last
parameter before the variable argument list. The proper fix is to
swap the parameters around and make the format string the last
parameter.

This patch (except the changes in lib/libcflat.h and lib/report.c
and some rebase conflicts along the way) has basically been created
with following coccinelle script (with some additional manual tweaking
of long and disabled lines afterwards):

@@
expression fmt;
expression pass;
expression list args;
@@
report(
-fmt, pass
+pass, fmt
, args);

@@
expression fmt;
expression pass;
expression list args;
@@
report_xfail(
-fmt, xfail, pass
+xfail, pass, fmt
, args);

Tested-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20191206113102.14914-1-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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fix conversions in report()s

Fix conversions that would trigger a warning if the format was checked
by a compiler.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@

fix conversions in report()s

Fix conversions that would trigger a warning if the format was checked
by a compiler.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

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powerpc/ppc64: reserve argv[0] for prognam

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Merge branch 'ppc64/initial-drop-v7' of https://github.com/rhdrjones/kvm-unit-tests into HEAD

This series brings basic setup; starts a test's C entry point, main(),
and printf, exit, and malloc work

Merge branch 'ppc64/initial-drop-v7' of https://github.com/rhdrjones/kvm-unit-tests into HEAD

This series brings basic setup; starts a test's C entry point, main(),
and printf, exit, and malloc work. Three more series should follow this
one which must bring; vector support, mmu support, and smp support, at
which point I believe the framework could just evolve with the creation
of unit tests.

Tested on TCG and a P8 kvm_pr machine, and Laurent has tested it on
both a PowerMac G5 (kvm_pr) and a kvm_hv machine. I'm looking forward
to hearing more testing feedback from others though.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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powerpc/ppc64: adapt arm's setup

Copy arm's setup code (also DT based) over to powerpc, adapting
it a bit. Also bring over arm's setup selftest, giving powerpc
its first test.

The largest change fr

powerpc/ppc64: adapt arm's setup

Copy arm's setup code (also DT based) over to powerpc, adapting
it a bit. Also bring over arm's setup selftest, giving powerpc
its first test.

The largest change from arm's setup.c is that instead of using a
hardcoded SMP_CACHE_BYTES, cpu_set() is extended to extract the
icache and dcache line sizes from the cpu DT nodes. That change
also requires that we call cpu_init() before mem_init() in setup().

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Tested-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>

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powerpc/ppc64: start skeleton framework

Use the arm/arm64 framework as a template to start a skeleton
for powerpc/ppc64. Copy the arm makefiles and linker script
verbatim. We'll modify them for powe

powerpc/ppc64: start skeleton framework

Use the arm/arm64 framework as a template to start a skeleton
for powerpc/ppc64. Copy the arm makefiles and linker script
verbatim. We'll modify them for powerpc with the next patch,
making it clear what needs to be changed.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>

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