From 87f01cd69488bf39e80c422b92717029fed0bef6 Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Wed, 11 May 2016 12:33:43 +0200 Subject: [PATCH 04/10] acpi: fix endian-ness for table ids RH-Author: Laszlo Ersek Message-id: <1462970028-10959-3-git-send-email-lersek@redhat.com> Patchwork-id: 70379 O-Subject: [RHEL-7.3 qemu-kvm PATCH v2 2/7] acpi: fix endian-ness for table ids Bugzilla: 1330969 RH-Acked-by: Igor Mammedov RH-Acked-by: Michael S. Tsirkin RH-Acked-by: Thomas Huth From: "Michael S. Tsirkin" when using signature for table ID, we forgot to byte-swap it. signatures are really ASCII strings, let's treat them as such. While at it, get rid of most of _SIGNATURE macros. Signed-off-by: Michael S. Tsirkin (cherry picked from commit 821e3227863ea8db057190e578efa0f1f57ed9de) RHEL-7 backport notes: this patch is being backported only to decrease the number of conflicts in the upcoming patches; we only support x86_64 hosts, which is unaffected by the endianness issue described in the upstream commit message. Signed-off-by: Laszlo Ersek --- hw/i386/acpi-defs.h | 14 -------------- hw/i386/acpi-build.c | 31 ++++++++++++++++--------------- 2 files changed, 16 insertions(+), 29 deletions(-) Signed-off-by: Miroslav Rezanina --- hw/i386/acpi-build.c | 31 ++++++++++++++++--------------- hw/i386/acpi-defs.h | 14 -------------- 2 files changed, 16 insertions(+), 29 deletions(-) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index a3a4c3b..be32bc3 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -243,14 +243,14 @@ static void acpi_get_pci_info(PcPciInfo *info) static void build_header(GArray *linker, GArray *table_data, - AcpiTableHeader *h, uint32_t sig, int len, uint8_t rev) + AcpiTableHeader *h, const char *sig, int len, uint8_t rev) { - h->signature = cpu_to_le32(sig); + memcpy(&h->signature, sig, 4); h->length = cpu_to_le32(len); h->revision = rev; memcpy(h->oem_id, ACPI_BUILD_APPNAME6, 6); memcpy(h->oem_table_id, ACPI_BUILD_APPNAME4, 4); - memcpy(h->oem_table_id + 4, (void *)&sig, 4); + memcpy(h->oem_table_id + 4, sig, 4); h->oem_revision = cpu_to_le32(1); memcpy(h->asl_compiler_id, ACPI_BUILD_APPNAME4, 4); h->asl_compiler_revision = cpu_to_le32(1); @@ -463,7 +463,7 @@ static void build_facs(GArray *table_data, GArray *linker, PcGuestInfo *guest_info) { AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs); - facs->signature = cpu_to_le32(ACPI_FACS_SIGNATURE); + memcpy(&facs->signature, "FACS", 4); facs->length = cpu_to_le32(sizeof(*facs)); } @@ -520,7 +520,7 @@ build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm, fadt_setup(fadt, pm); build_header(linker, table_data, - (void *)fadt, ACPI_FACP_SIGNATURE, sizeof(*fadt), 1); + (void *)fadt, "FACP", sizeof(*fadt), 1); } static void @@ -589,7 +589,7 @@ build_madt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu, local_nmi->lint = 1; /* ACPI_LINT1 */ build_header(linker, table_data, - (void *)(table_data->data + madt_start), ACPI_APIC_SIGNATURE, + (void *)(table_data->data + madt_start), "APIC", table_data->len - madt_start, 1); } @@ -782,7 +782,7 @@ build_ssdt(GArray *table_data, GArray *linker, build_header(linker, table_data, (void *)(table_data->data + ssdt_start), - ACPI_SSDT_SIGNATURE, table_data->len - ssdt_start, 1); + "SSDT", table_data->len - ssdt_start, 1); } static void @@ -797,7 +797,7 @@ build_hpet(GArray *table_data, GArray *linker) hpet->timer_block_id = cpu_to_le32(0x8086a201); hpet->addr.address = cpu_to_le64(HPET_BASE); build_header(linker, table_data, - (void *)hpet, ACPI_HPET_SIGNATURE, sizeof(*hpet), 1); + (void *)hpet, "HPET", sizeof(*hpet), 1); } static void @@ -889,7 +889,7 @@ build_srat(GArray *table_data, GArray *linker, build_header(linker, table_data, (void *)(table_data->data + srat_start), - ACPI_SRAT_SIGNATURE, + "SRAT", table_data->len - srat_start, 1); } @@ -897,7 +897,7 @@ static void build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info) { AcpiTableMcfg *mcfg; - uint32_t sig; + const char *sig; int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]); mcfg = acpi_data_push(table_data, len); @@ -914,9 +914,10 @@ build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info) * ACPI spec requires OSPMs to ignore such tables. */ if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) { - sig = ACPI_RSRV_SIGNATURE; + /* Reserved signature: ignored by OSPM */ + sig = "QEMU"; } else { - sig = ACPI_MCFG_SIGNATURE; + sig = "MCFG"; } build_header(linker, table_data, (void *)mcfg, sig, len, 1); } @@ -932,7 +933,7 @@ build_dsdt(GArray *table_data, GArray *linker, AcpiMiscInfo *misc) memcpy(dsdt, misc->dsdt_code, misc->dsdt_size); memset(dsdt, 0, sizeof *dsdt); - build_header(linker, table_data, dsdt, ACPI_DSDT_SIGNATURE, + build_header(linker, table_data, dsdt, "DSDT", misc->dsdt_size, 1); } @@ -957,7 +958,7 @@ build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets) sizeof(uint32_t)); } build_header(linker, table_data, - (void *)rsdt, ACPI_RSDT_SIGNATURE, rsdt_len, 1); + (void *)rsdt, "RSDT", rsdt_len, 1); } static GArray * @@ -968,7 +969,7 @@ build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt) bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 1, true /* fseg memory */); - rsdp->signature = cpu_to_le64(ACPI_RSDP_SIGNATURE); + memcpy(&rsdp->signature, "RSD PTR ", 8); memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6); rsdp->rsdt_physical_address = cpu_to_le32(rsdt); /* Address to be filled by Guest linker */ diff --git a/hw/i386/acpi-defs.h b/hw/i386/acpi-defs.h index 78ca204..e93babb 100644 --- a/hw/i386/acpi-defs.h +++ b/hw/i386/acpi-defs.h @@ -52,8 +52,6 @@ struct Acpi20GenericAddress { } QEMU_PACKED; typedef struct Acpi20GenericAddress Acpi20GenericAddress; -#define ACPI_RSDP_SIGNATURE 0x2052545020445352LL // "RSD PTR " - struct AcpiRsdpDescriptor { /* Root System Descriptor Pointer */ uint64_t signature; /* ACPI signature, contains "RSD PTR " */ uint8_t checksum; /* To make sum of struct == 0 */ @@ -92,7 +90,6 @@ typedef struct AcpiTableHeader AcpiTableHeader; /* * ACPI 1.0 Fixed ACPI Description Table (FADT) */ -#define ACPI_FACP_SIGNATURE 0x50434146 // FACP struct AcpiFadtDescriptorRev1 { ACPI_TABLE_HEADER_DEF /* ACPI common table header */ @@ -141,7 +138,6 @@ typedef struct AcpiFadtDescriptorRev1 AcpiFadtDescriptorRev1; /* * ACPI 1.0 Root System Description Table (RSDT) */ -#define ACPI_RSDT_SIGNATURE 0x54445352 // RSDT struct AcpiRsdtDescriptorRev1 { ACPI_TABLE_HEADER_DEF /* ACPI common table header */ @@ -153,7 +149,6 @@ typedef struct AcpiRsdtDescriptorRev1 AcpiRsdtDescriptorRev1; /* * ACPI 1.0 Firmware ACPI Control Structure (FACS) */ -#define ACPI_FACS_SIGNATURE 0x53434146 // FACS struct AcpiFacsDescriptorRev1 { uint32_t signature; /* ACPI Signature */ @@ -169,7 +164,6 @@ typedef struct AcpiFacsDescriptorRev1 AcpiFacsDescriptorRev1; /* * Differentiated System Description Table (DSDT) */ -#define ACPI_DSDT_SIGNATURE 0x54445344 // DSDT /* * MADT values and structures @@ -182,7 +176,6 @@ typedef struct AcpiFacsDescriptorRev1 AcpiFacsDescriptorRev1; /* Master MADT */ -#define ACPI_APIC_SIGNATURE 0x43495041 // APIC struct AcpiMultipleApicTable { ACPI_TABLE_HEADER_DEF /* ACPI common table header */ @@ -253,7 +246,6 @@ typedef struct AcpiMadtLocalNmi AcpiMadtLocalNmi; /* * HPET Description Table */ -#define ACPI_HPET_SIGNATURE 0x54455048 // HPET struct Acpi20Hpet { ACPI_TABLE_HEADER_DEF /* ACPI common table header */ uint32_t timer_block_id; @@ -268,7 +260,6 @@ typedef struct Acpi20Hpet Acpi20Hpet; * SRAT (NUMA topology description) table */ -#define ACPI_SRAT_SIGNATURE 0x54415253 // SRAT struct AcpiSystemResourceAffinityTable { ACPI_TABLE_HEADER_DEF @@ -316,11 +307,6 @@ struct AcpiMcfgAllocation { } QEMU_PACKED; typedef struct AcpiMcfgAllocation AcpiMcfgAllocation; -#define ACPI_MCFG_SIGNATURE 0x4746434d // MCFG - -/* Reserved signature: ignored by OSPM */ -#define ACPI_RSRV_SIGNATURE 0x554d4551 // QEMU - struct AcpiTableMcfg { ACPI_TABLE_HEADER_DEF; uint8_t reserved[8]; -- 1.8.3.1