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File _service:tar_scm:hw-acpi-Make-_MAT-method-optional.patch of Package qemu
From e9b0d476172e872bf695780a9ffa8072faeb3cd0 Mon Sep 17 00:00:00 2001 From: Jean-Philippe Brucker <jean-philippe@linaro.org> Date: Mon, 25 Apr 2022 17:40:57 +0100 Subject: [PATCH] hw/acpi: Make _MAT method optional The GICC interface on arm64 vCPUs is statically defined in the MADT, and doesn't require a _MAT entry. Although the GICC is indicated as present by the MADT entry, it can only be used from vCPU sysregs, which aren't accessible until hot-add. Co-developed-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Co-developed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Signed-off-by: Jonathan Cameron <jonathan.cameron@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> --- hw/acpi/cpu.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/hw/acpi/cpu.c b/hw/acpi/cpu.c index 991f1d4181..c922c380aa 100644 --- a/hw/acpi/cpu.c +++ b/hw/acpi/cpu.c @@ -720,9 +720,11 @@ void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts, aml_append(dev, method); /* build _MAT object */ - build_madt_cpu(i, arch_ids, madt_buf, true); /* set enabled flag */ - aml_append(dev, aml_name_decl("_MAT", - aml_buffer(madt_buf->len, (uint8_t *)madt_buf->data))); + if (build_madt_cpu) { + build_madt_cpu(i, arch_ids, madt_buf, true); /* set enabled flag */ + aml_append(dev, aml_name_decl("_MAT", + aml_buffer(madt_buf->len, (uint8_t *)madt_buf->data))); + } g_array_free(madt_buf, true); if (CPU(arch_ids->cpus[i].cpu) != first_cpu) { -- 2.27.0
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