diff options
47 files changed, 718 insertions, 374 deletions
diff --git a/Documentation/ABI/stable/sysfs-module b/Documentation/ABI/stable/sysfs-module index 560b4a3278df..41b1f16e8795 100644 --- a/Documentation/ABI/stable/sysfs-module +++ b/Documentation/ABI/stable/sysfs-module @@ -38,7 +38,7 @@ What: /sys/module/<MODULENAME>/srcversion Date: Jun 2005 Description: If the module source has MODULE_VERSION, this file will contain - the checksum of the the source code. + the checksum of the source code. What: /sys/module/<MODULENAME>/version Date: Jun 2005 diff --git a/Documentation/ABI/testing/sysfs-class-pwm b/Documentation/ABI/testing/sysfs-class-pwm index 3d65285bcd5f..0638c94d01ef 100644 --- a/Documentation/ABI/testing/sysfs-class-pwm +++ b/Documentation/ABI/testing/sysfs-class-pwm @@ -81,7 +81,7 @@ Description: What: /sys/class/pwm/pwmchip<N>/pwmX/capture Date: June 2016 KernelVersion: 4.8 -Contact: Lee Jones <lee.jones@linaro.org> +Contact: Lee Jones <lee@kernel.org> Description: Capture information about a PWM signal. The output format is a pair unsigned integers (period and duty cycle), separated by a diff --git a/Documentation/ABI/testing/sysfs-class-rtrs-client b/Documentation/ABI/testing/sysfs-class-rtrs-client index 49a4157c7bf1..fecc59d1b96f 100644 --- a/Documentation/ABI/testing/sysfs-class-rtrs-client +++ b/Documentation/ABI/testing/sysfs-class-rtrs-client @@ -78,7 +78,7 @@ What: /sys/class/rtrs-client/<session-name>/paths/<src@dst>/hca_name Date: Feb 2020 KernelVersion: 5.7 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com> -Description: RO, Contains the the name of HCA the connection established on. +Description: RO, Contains the name of HCA the connection established on. What: /sys/class/rtrs-client/<session-name>/paths/<src@dst>/hca_port Date: Feb 2020 diff --git a/Documentation/ABI/testing/sysfs-class-rtrs-server b/Documentation/ABI/testing/sysfs-class-rtrs-server index 3b6d5b067df0..b08601d80409 100644 --- a/Documentation/ABI/testing/sysfs-class-rtrs-server +++ b/Documentation/ABI/testing/sysfs-class-rtrs-server @@ -24,7 +24,7 @@ What: /sys/class/rtrs-server/<session-name>/paths/<src@dst>/hca_name Date: Feb 2020 KernelVersion: 5.7 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com> -Description: RO, Contains the the name of HCA the connection established on. +Description: RO, Contains the name of HCA the connection established on. What: /sys/class/rtrs-server/<session-name>/paths/<src@dst>/hca_port Date: Feb 2020 diff --git a/Documentation/ABI/testing/sysfs-devices-platform-ACPI-TAD b/Documentation/ABI/testing/sysfs-devices-platform-ACPI-TAD index f7b360a61b21..bc44bc903bc8 100644 --- a/Documentation/ABI/testing/sysfs-devices-platform-ACPI-TAD +++ b/Documentation/ABI/testing/sysfs-devices-platform-ACPI-TAD @@ -74,7 +74,7 @@ Description: Reads also cause the AC alarm timer status to be reset. - Another way to reset the the status of the AC alarm timer is to + Another way to reset the status of the AC alarm timer is to write (the number) 0 to this file. If the status return value indicates that the timer has expired, diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power index 1b2a2d41ff80..54195530e97a 100644 --- a/Documentation/ABI/testing/sysfs-devices-power +++ b/Documentation/ABI/testing/sysfs-devices-power @@ -303,5 +303,5 @@ Date: Apr 2010 Contact: Dominik Brodowski <linux@dominikbrodowski.net> Description: Reports the runtime PM children usage count of a device, or - 0 if the the children will be ignored. + 0 if the children will be ignored. diff --git a/Documentation/ABI/testing/sysfs-devices-soc b/Documentation/ABI/testing/sysfs-devices-soc index ea999e292f11..5269808ec35f 100644 --- a/Documentation/ABI/testing/sysfs-devices-soc +++ b/Documentation/ABI/testing/sysfs-devices-soc @@ -1,6 +1,6 @@ What: /sys/devices/socX Date: January 2012 -contact: Lee Jones <lee.jones@linaro.org> +contact: Lee Jones <lee@kernel.org> Description: The /sys/devices/ directory contains a sub-directory for each System-on-Chip (SoC) device on a running platform. Information @@ -14,14 +14,14 @@ Description: What: /sys/devices/socX/machine Date: January 2012 -contact: Lee Jones <lee.jones@linaro.org> +contact: Lee Jones <lee@kernel.org> Description: Read-only attribute common to all SoCs. Contains the SoC machine name (e.g. Ux500). What: /sys/devices/socX/family Date: January 2012 -contact: Lee Jones <lee.jones@linaro.org> +contact: Lee Jones <lee@kernel.org> Description: Read-only attribute common to all SoCs. Contains SoC family name (e.g. DB8500). @@ -59,7 +59,7 @@ Description: What: /sys/devices/socX/soc_id Date: January 2012 -contact: Lee Jones <lee.jones@linaro.org> +contact: Lee Jones <lee@kernel.org> Description: Read-only attribute supported by most SoCs. In the case of ST-Ericsson's chips this contains the SoC serial number. @@ -72,21 +72,21 @@ Description: What: /sys/devices/socX/revision Date: January 2012 -contact: Lee Jones <lee.jones@linaro.org> +contact: Lee Jones <lee@kernel.org> Description: Read-only attribute supported by most SoCs. Contains the SoC's manufacturing revision number. What: /sys/devices/socX/process Date: January 2012 -contact: Lee Jones <lee.jones@linaro.org> +contact: Lee Jones <lee@kernel.org> Description: Read-only attribute supported ST-Ericsson's silicon. Contains the the process by which the silicon chip was manufactured. What: /sys/bus/soc Date: January 2012 -contact: Lee Jones <lee.jones@linaro.org> +contact: Lee Jones <lee@kernel.org> Description: The /sys/bus/soc/ directory contains the usual sub-folders expected under most buses. /sys/bus/soc/devices is of particular diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index df79e129d097..5bf61881f012 100644 --- a/Documentation/ABI/testing/sysfs-devices-system-cpu +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu @@ -67,8 +67,7 @@ Description: Discover NUMA node a CPU belongs to /sys/devices/system/cpu/cpu42/node2 -> ../../node/node2 -What: /sys/devices/system/cpu/cpuX/topology/core_id - /sys/devices/system/cpu/cpuX/topology/core_siblings +What: /sys/devices/system/cpu/cpuX/topology/core_siblings /sys/devices/system/cpu/cpuX/topology/core_siblings_list /sys/devices/system/cpu/cpuX/topology/physical_package_id /sys/devices/system/cpu/cpuX/topology/thread_siblings @@ -84,10 +83,6 @@ Description: CPU topology files that describe a logical CPU's relationship Briefly, the files above are: - core_id: the CPU core ID of cpuX. Typically it is the - hardware platform's identifier (rather than the kernel's). - The actual value is architecture and platform dependent. - core_siblings: internal kernel map of cpuX's hardware threads within the same physical_package_id. diff --git a/Documentation/driver-api/firmware/core.rst b/Documentation/driver-api/firmware/core.rst index 1d1688cbc078..803cd574bbd7 100644 --- a/Documentation/driver-api/firmware/core.rst +++ b/Documentation/driver-api/firmware/core.rst @@ -13,4 +13,5 @@ documents these features. direct-fs-lookup fallback-mechanisms lookup-order + firmware-usage-guidelines diff --git a/Documentation/driver-api/firmware/firmware-usage-guidelines.rst b/Documentation/driver-api/firmware/firmware-usage-guidelines.rst new file mode 100644 index 000000000000..fdcfce42c6d2 --- /dev/null +++ b/Documentation/driver-api/firmware/firmware-usage-guidelines.rst @@ -0,0 +1,44 @@ +=================== +Firmware Guidelines +=================== + +Users switching to a newer kernel should *not* have to install newer +firmware files to keep their hardware working. At the same time updated +firmware files must not cause any regressions for users of older kernel +releases. + +Drivers that use firmware from linux-firmware should follow the rules in +this guide. (Where there is limited control of the firmware, +i.e. company doesn't support Linux, firmwares sourced from misc places, +then of course these rules will not apply strictly.) + +* Firmware files shall be designed in a way that it allows checking for + firmware ABI version changes. It is recommended that firmware files be + versioned with at least a major/minor version. It is suggested that + the firmware files in linux-firmware be named with some device + specific name, and just the major version. The firmware version should + be stored in the firmware header, or as an exception, as part of the + firmware file name, in order to let the driver detact any non-ABI + fixes/changes. The firmware files in linux-firmware should be + overwritten with the newest compatible major version. Newer major + version firmware shall remain compatible with all kernels that load + that major number. + +* If the kernel support for the hardware is normally inactive, or the + hardware isn't available for public consumption, this can + be ignored, until the first kernel release that enables that hardware. + This means no major version bumps without the kernel retaining + backwards compatibility for the older major versions. Minor version + bumps should not introduce new features that newer kernels depend on + non-optionally. + +* If a security fix needs lockstep firmware and kernel fixes in order to + be successful, then all supported major versions in the linux-firmware + repo that are required by currently supported stable/LTS kernels, + should be updated with the security fix. The kernel patches should + detect if the firmware is new enough to declare if the security issue + is fixed. All communications around security fixes should point at + both the firmware and kernel fixes. If a security fix requires + deprecating old major versions, then this should only be done as a + last option, and be stated clearly in all communications. + diff --git a/Documentation/process/embargoed-hardware-issues.rst b/Documentation/process/embargoed-hardware-issues.rst index 95999302d279..b6b4481e2474 100644 --- a/Documentation/process/embargoed-hardware-issues.rst +++ b/Documentation/process/embargoed-hardware-issues.rst @@ -244,7 +244,7 @@ disclosure of a particular issue, unless requested by a response team or by an involved disclosed party. The current ambassadors list: ============= ======================================================== - AMD Tom Lendacky <tom.lendacky@amd.com> + AMD Tom Lendacky <thomas.lendacky@amd.com> Ampere Darren Hart <darren@os.amperecomputing.com> ARM Catalin Marinas <catalin.marinas@arm.com> IBM Power Anton Blanchard <anton@linux.ibm.com> @@ -264,6 +264,9 @@ an involved disclosed party. The current ambassadors list: Amazon Google Kees Cook <keescook@chromium.org> + + GCC + LLVM Nick Desaulniers <ndesaulniers@google.com> ============= ======================================================== If you want your organization to be added to the ambassadors list, please diff --git a/Documentation/translations/zh_CN/process/embargoed-hardware-issues.rst b/Documentation/translations/zh_CN/process/embargoed-hardware-issues.rst index 88273ebe7823..cf5f1fca3d92 100644 --- a/Documentation/translations/zh_CN/process/embargoed-hardware-issues.rst +++ b/Documentation/translations/zh_CN/process/embargoed-hardware-issues.rst @@ -174,7 +174,7 @@ CVE分配 ============= ======================================================== ARM - AMD Tom Lendacky <tom.lendacky@amd.com> + AMD Tom Lendacky <thomas.lendacky@amd.com> IBM Intel Tony Luck <tony.luck@intel.com> Qualcomm Trilok Soni <tsoni@codeaurora.org> diff --git a/Documentation/translations/zh_TW/process/embargoed-hardware-issues.rst b/Documentation/translations/zh_TW/process/embargoed-hardware-issues.rst index 6c76fc96131a..fbde3e26eda5 100644 --- a/Documentation/translations/zh_TW/process/embargoed-hardware-issues.rst +++ b/Documentation/translations/zh_TW/process/embargoed-hardware-issues.rst @@ -177,7 +177,7 @@ CVE分配 ============= ======================================================== ARM - AMD Tom Lendacky <tom.lendacky@amd.com> + AMD Tom Lendacky <thomas.lendacky@amd.com> IBM Intel Tony Luck <tony.luck@intel.com> Qualcomm Trilok Soni <tsoni@codeaurora.org> diff --git a/MAINTAINERS b/MAINTAINERS index b779a0b435e3..84ad954cee26 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7494,7 +7494,7 @@ F: Documentation/admin-guide/media/em28xx* F: drivers/media/usb/em28xx/ EMBEDDED LINUX -M: Matt Mackall <mpm@selenic.com> +M: Olivia Mackall <olivia@selenic.com> M: David Woodhouse <dwmw2@infradead.org> L: linux-embedded@vger.kernel.org S: Maintained @@ -8902,7 +8902,7 @@ F: include/trace/events/hwmon*.h K: (devm_)?hwmon_device_(un)?register(|_with_groups|_with_info) HARDWARE RANDOM NUMBER GENERATOR CORE -M: Matt Mackall <mpm@selenic.com> +M: Olivia Mackall <olivia@selenic.com> M: Herbert Xu <herbert@gondor.apana.org.au> L: linux-crypto@vger.kernel.org S: Odd fixes diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c index 9ab78ad826e2..869ffc4d4484 100644 --- a/arch/arm64/kernel/topology.c +++ b/arch/arm64/kernel/topology.c @@ -89,8 +89,6 @@ int __init parse_acpi_topology(void) return 0; for_each_possible_cpu(cpu) { - int i, cache_id; - topology_id = find_acpi_cpu_topology(cpu, 0); if (topology_id < 0) return topology_id; @@ -107,18 +105,6 @@ int __init parse_acpi_topology(void) cpu_topology[cpu].cluster_id = topology_id; topology_id = find_acpi_cpu_topology_package(cpu); cpu_topology[cpu].package_id = topology_id; - - i = acpi_find_last_cache_level(cpu); - - if (i > 0) { - /* - * this is the only part of cpu_topology that has - * a direct relationship with the cache topology - */ - cache_id = find_acpi_cpu_cache_topology(cpu, i); - if (cache_id > 0) - cpu_topology[cpu].llc_id = cache_id; - } } return 0; diff --git a/drivers/acpi/pptt.c b/drivers/acpi/pptt.c index 701f61c01359..c91342dcbcd6 100644 --- a/drivers/acpi/pptt.c +++ b/drivers/acpi/pptt.c @@ -437,7 +437,8 @@ static void cache_setup_acpi_cpu(struct acpi_table_header *table, pr_debug("found = %p %p\n", found_cache, cpu_node); if (found_cache) update_cache_properties(this_leaf, found_cache, - cpu_node, table->revision); + ACPI_TO_POINTER(ACPI_PTR_DIFF(cpu_node, table)), + table->revision); index++; } @@ -532,21 +533,37 @@ static int topology_get_acpi_cpu_tag(struct acpi_table_header *table, return -ENOENT; } + +static struct acpi_table_header *acpi_get_pptt(void) +{ + static struct acpi_table_header *pptt; + acpi_status status; + + /* + * PPTT will be used at runtime on every CPU hotplug in path, so we + * don't need to call acpi_put_table() to release the table mapping. + */ + if (!pptt) { + status = acpi_get_table(ACPI_SIG_PPTT, 0, &pptt); + if (ACPI_FAILURE(status)) + acpi_pptt_warn_missing(); + } + + return pptt; +} + static int find_acpi_cpu_topology_tag(unsigned int cpu, int level, int flag) { struct acpi_table_header *table; - acpi_status status; int retval; - status = acpi_get_table(ACPI_SIG_PPTT, 0, &table); - if (ACPI_FAILURE(status)) { - acpi_pptt_warn_missing(); + table = acpi_get_pptt(); + if (!table) return -ENOENT; - } + retval = topology_get_acpi_cpu_tag(table, cpu, level, flag); pr_debug("Topology Setup ACPI CPU %d, level %d ret = %d\n", cpu, level, retval); - acpi_put_table(table); return retval; } @@ -567,16 +584,13 @@ static int find_acpi_cpu_topology_tag(unsigned int cpu, int level, int flag) static int check_acpi_cpu_flag(unsigned int cpu, int rev, u32 flag) { struct acpi_table_header *table; - acpi_status status; u32 acpi_cpu_id = get_acpi_id_for_cpu(cpu); struct acpi_pptt_processor *cpu_node = NULL; int ret = -ENOENT; - status = acpi_get_table(ACPI_SIG_PPTT, 0, &table); - if (ACPI_FAILURE(status)) { - acpi_pptt_warn_missing(); - return ret; - } + table = acpi_get_pptt(); + if (!table) + return -ENOENT; if (table->revision >= rev) cpu_node = acpi_find_processor_node(table, acpi_cpu_id); @@ -584,8 +598,6 @@ static int check_acpi_cpu_flag(unsigned int cpu, int rev, u32 flag) if (cpu_node) ret = (cpu_node->flags & flag) != 0; - acpi_put_table(table); - return ret; } @@ -604,18 +616,15 @@ int acpi_find_last_cache_level(unsigned int cpu) u32 acpi_cpu_id; struct acpi_table_header *table; int number_of_levels = 0; - acpi_status status; + + table = acpi_get_pptt(); + if (!table) + return -ENOENT; pr_debug("Cache Setup find last level CPU=%d\n", cpu); acpi_cpu_id = get_acpi_id_for_cpu(cpu); - status = acpi_get_table(ACPI_SIG_PPTT, 0, &table); - if (ACPI_FAILURE(status)) { - acpi_pptt_warn_missing(); - } else { - number_of_levels = acpi_find_cache_levels(table, acpi_cpu_id); - acpi_put_table(table); - } + number_of_levels = acpi_find_cache_levels(table, acpi_cpu_id); pr_debug("Cache Setup find last level level=%d\n", number_of_levels); return number_of_levels; @@ -637,20 +646,16 @@ int acpi_find_last_cache_level(unsigned int cpu) int cache_setup_acpi(unsigned int cpu) { struct acpi_table_header *table; - acpi_status status; - pr_debug("Cache Setup ACPI CPU %d\n", cpu); - - status = acpi_get_table(ACPI_SIG_PPTT, 0, &table); - if (ACPI_FAILURE(status)) { - acpi_pptt_warn_missing(); + table = acpi_get_pptt(); + if (!table) return -ENOENT; - } + + pr_debug("Cache Setup ACPI CPU %d\n", cpu); cache_setup_acpi_cpu(table, cpu); - acpi_put_table(table); - return status; + return 0; } /** @@ -691,43 +696,6 @@ int find_acpi_cpu_topology(unsigned int cpu, int level) } /** - * find_acpi_cpu_cache_topology() - Determine a unique cache topology value - * @cpu: Kernel logical CPU number - * @level: The cache level for which we would like a unique ID - * - * Determine a unique ID for each unified cache in the system - * - * Return: -ENOENT if the PPTT doesn't exist, or the CPU cannot be found. - * Otherwise returns a value which represents a unique topological feature. - */ -int find_acpi_cpu_cache_topology(unsigned int cpu, int level) -{ - struct acpi_table_header *table; - struct acpi_pptt_cache *found_cache; - acpi_status status; - u32 acpi_cpu_id = get_acpi_id_for_cpu(cpu); - struct acpi_pptt_processor *cpu_node = NULL; - int ret = -1; - - status = acpi_get_table(ACPI_SIG_PPTT, 0, &table); - if (ACPI_FAILURE(status)) { - acpi_pptt_warn_missing(); - return -ENOENT; - } - - found_cache = acpi_find_cache_node(table, acpi_cpu_id, - CACHE_TYPE_UNIFIED, - level, - &cpu_node); - if (found_cache) - ret = ACPI_PTR_DIFF(cpu_node, table); - - acpi_put_table(table); - - return ret; -} - -/** * find_acpi_cpu_topology_package() - Determine a unique CPU package value * @cpu: Kernel logical CPU number * @@ -766,50 +734,38 @@ int find_acpi_cpu_topology_package(unsigned int cpu) int find_acpi_cpu_topology_cluster(unsigned int cpu) { struct acpi_table_header *table; - acpi_status status; struct acpi_pptt_processor *cpu_node, *cluster_node; u32 acpi_cpu_id; int retval; int is_thread; - status = acpi_get_table(ACPI_SIG_PPTT, 0, &table); - if (ACPI_FAILURE(status)) { - acpi_pptt_warn_missing(); + table = acpi_get_pptt(); + if (!table) return -ENOENT; - } acpi_cpu_id = get_acpi_id_for_cpu(cpu); cpu_node = acpi_find_processor_node(table, acpi_cpu_id); - if (cpu_node == NULL || !cpu_node->parent) { - retval = -ENOENT; - goto put_table; - } + if (!cpu_node || !cpu_node->parent) + return -ENOENT; is_thread = cpu_node->flags & ACPI_PPTT_ACPI_PROCESSOR_IS_THREAD; cluster_node = fetch_pptt_node(table, cpu_node->parent); - if (cluster_node == NULL) { - retval = -ENOENT; - goto put_table; - } + if (!cluster_node) + return -ENOENT; + if (is_thread) { - if (!cluster_node->parent) { - retval = -ENOENT; - goto put_table; - } + if (!cluster_node->parent) + return -ENOENT; + cluster_node = fetch_pptt_node(table, cluster_node->parent); - if (cluster_node == NULL) { - retval = -ENOENT; - goto put_table; - } + if (!cluster_node) + return -ENOENT; } if (cluster_node->flags & ACPI_PPTT_ACPI_PROCESSOR_ID_VALID) retval = cluster_node->acpi_processor_id; else retval = ACPI_PTR_DIFF(cluster_node, table); -put_table: - acpi_put_table(table); - return retval; } diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index 579c851a2bd7..0424b59b695e 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -7,6 +7,7 @@ */ #include <linux/acpi.h> +#include <linux/cacheinfo.h> #include <linux/cpu.h> #include <linux/cpufreq.h> #include <linux/device.h> @@ -496,7 +497,7 @@ static int __init get_cpu_for_node(struct device_node *node) } static int __init parse_core(struct device_node *core, int package_id, - int core_id) + int cluster_id, int core_id) { char name[20]; bool leaf = true; @@ -512,6 +513,7 @@ static int __init parse_core(struct device_node *core, int package_id, cpu = get_cpu_for_node(t); if (cpu >= 0) { cpu_topology[cpu].package_id = package_id; + cpu_topology[cpu].cluster_id = cluster_id; cpu_topology[cpu].core_id = core_id; cpu_topology[cpu].thread_id = i; } else if (cpu != -ENODEV) { @@ -533,6 +535,7 @@ static int __init parse_core(struct device_node *core, int package_id, } cpu_topology[cpu].package_id = package_id; + cpu_topology[cpu].cluster_id = cluster_id; cpu_topology[cpu].core_id = core_id; } else if (leaf && cpu != -ENODEV) { pr_err("%pOF: Can't get CPU for leaf core\n", core); @@ -542,13 +545,13 @@ static int __init parse_core(struct device_node *core, int package_id, return 0; } -static int __init parse_cluster(struct device_node *cluster, int depth) +static int __init parse_cluster(struct device_node *cluster, int package_id, + int cluster_id, int depth) { char name[20]; bool leaf = true; bool has_cores = false; struct device_node *c; - static int package_id __initdata; int core_id = 0; int i, ret; @@ -563,7 +566,9 @@ static int __init parse_cluster(struct device_node *cluster, int depth) c = of_get_child_by_name(cluster, name); if (c) { leaf = false; - ret = parse_cluster(c, depth + 1); + ret = parse_cluster(c, package_id, i, depth + 1); + if (depth > 0) + pr_warn("Topology for clusters of clusters not yet supported\n"); of_node_put(c); if (ret != 0) return ret; |