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This is wrong because PVH doesn't have access to the physical local APIC, and instead gets an emulated local APIC by Xen, that doesn't have the LINT0 or LINT1 pins wired to anything. Furthermore the ACPI Processor UIDs used in the APIC NMI Structures are likely to not match the ones generated by Xen for the Local x2APIC Structures, creating confusion to dom0. Fix this by removing the logic to passthrough the Local APIC NMI Structure for PVH dom0. Fixes: 1d74282c45 ('x86: setup PVHv2 Dom0 ACPI tables') Signed-off-by: Roger Pau Monn=C3=A9 Reviewed-by: Jan Beulich --- xen/arch/x86/hvm/dom0_build.c | 34 +--------------------------------- 1 file changed, 1 insertion(+), 33 deletions(-) diff --git a/xen/arch/x86/hvm/dom0_build.c b/xen/arch/x86/hvm/dom0_build.c index 307edc6a8c..d44de7f2b2 100644 --- a/xen/arch/x86/hvm/dom0_build.c +++ b/xen/arch/x86/hvm/dom0_build.c @@ -58,9 +58,6 @@ static unsigned int __initdata acpi_intr_overrides; static struct acpi_madt_interrupt_override __initdata *intsrcovr; =20 -static unsigned int __initdata acpi_nmi_sources; -static struct acpi_madt_nmi_source __initdata *nmisrc; - static unsigned int __initdata order_stats[MAX_ORDER + 1]; =20 static void __init print_order_stats(const struct domain *d) @@ -763,25 +760,6 @@ static int __init cf_check acpi_set_intr_ovr( return 0; } =20 -static int __init cf_check acpi_count_nmi_src( - struct acpi_subtable_header *header, const unsigned long end) -{ - acpi_nmi_sources++; - return 0; -} - -static int __init cf_check acpi_set_nmi_src( - struct acpi_subtable_header *header, const unsigned long end) -{ - const struct acpi_madt_nmi_source *src =3D - container_of(header, struct acpi_madt_nmi_source, header); - - *nmisrc =3D *src; - nmisrc++; - - return 0; -} - static int __init pvh_setup_acpi_madt(struct domain *d, paddr_t *addr) { struct acpi_table_madt *madt; @@ -797,16 +775,11 @@ static int __init pvh_setup_acpi_madt(struct domain *= d, paddr_t *addr) acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_count_intr_ovr, UINT_MAX); =20 - /* Count number of NMI sources in the MADT. */ - acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_count_nmi_src, - UINT_MAX); - max_vcpus =3D dom0_max_vcpus(); /* Calculate the size of the crafted MADT. */ size =3D sizeof(*madt); size +=3D sizeof(*io_apic) * nr_ioapics; size +=3D sizeof(*intsrcovr) * acpi_intr_overrides; - size +=3D sizeof(*nmisrc) * acpi_nmi_sources; size +=3D sizeof(*x2apic) * max_vcpus; =20 madt =3D xzalloc_bytes(size); @@ -862,12 +835,7 @@ static int __init pvh_setup_acpi_madt(struct domain *d= , paddr_t *addr) acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_set_intr= _ovr, acpi_intr_overrides); =20 - /* Setup NMI sources. */ - nmisrc =3D (void *)intsrcovr; - acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_set_nmi_src, - acpi_nmi_sources); - - ASSERT(((void *)nmisrc - (void *)madt) =3D=3D size); + ASSERT(((void *)intsrcovr - (void *)madt) =3D=3D size); madt->header.length =3D size; /* * Calling acpi_tb_checksum here is a layering violation, but --=20 2.37.3