| # Intel64-specific X86 subarchitecture options |
| |
| # Copyright (c) 2019 Intel Corp. |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| if X86_64 |
| |
| config MAIN_STACK_SIZE |
| default 8192 |
| |
| config IDLE_STACK_SIZE |
| default 4096 |
| |
| config ISR_STACK_SIZE |
| default 16384 |
| |
| config TEST_EXTRA_STACK_SIZE |
| default 4096 |
| |
| config SYSTEM_WORKQUEUE_STACK_SIZE |
| default 8192 |
| |
| config X86_EXCEPTION_STACK_SIZE |
| int "Size of the exception stack(s)" |
| default 4096 |
| help |
| The exception stack(s) (one per CPU) are used both for exception |
| processing and early kernel/CPU initialization. They need only |
| support limited call-tree depth and must fit into the low core, |
| so they are typically smaller than the ISR stacks. |
| |
| config X86_EXCEPTION_STACK_TRACE |
| bool |
| default y |
| depends on EXCEPTION_STACK_TRACE |
| depends on NO_OPTIMIZATIONS |
| help |
| Internal config to enable runtime stack traces on fatal exceptions. |
| |
| config SCHED_IPI_VECTOR |
| int "IDT vector to use for scheduler IPI" |
| default 34 |
| range 33 255 |
| depends on SMP |
| |
| config TLB_IPI_VECTOR |
| int "IDT vector to use for TLB shootdown IPI" |
| default 35 |
| range 33 255 |
| depends on SMP |
| |
| # We should really only have to provide one of the following two values, |
| # but a bug in the Zephyr SDK for x86 precludes the use of division in |
| # the assembler. For now, we require that these values be specified manually, |
| # and we check to be sure they're a valid combination in arch.h. yes, ugh. |
| |
| config ISR_DEPTH |
| int "Maximum IRQ nesting depth" |
| default 4 |
| help |
| The more nesting allowed, the more room is required for IRQ stacks. |
| |
| config ISR_SUBSTACK_SIZE |
| int "Size of ISR substacks" |
| default 4096 |
| help |
| Number of bytes from the ISR stack to reserve for each nested IRQ |
| level. Must be a multiple of 16 to main stack alignment. Note that |
| CONFIG_ISR_SUBSTACK_SIZE * CONFIG_ISR_DEPTH must be equal to |
| CONFIG_ISR_STACK_SIZE. |
| |
| config X86_STACK_PROTECTION |
| bool |
| default y if HW_STACK_PROTECTION |
| select THREAD_STACK_INFO |
| help |
| This option leverages the MMU to cause a system fatal error if the |
| bounds of the current process stack are overflowed. This is done |
| by preceding all stack areas with a 4K guard page. |
| |
| config X86_USERSPACE |
| bool |
| default y if USERSPACE |
| select THREAD_STACK_INFO |
| help |
| This option enables APIs to drop a thread's privileges down to ring 3, |
| supporting user-level threads that are protected from each other and |
| from crashing the kernel. |
| |
| endif # X86_64 |
