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edited Apr 13, 2017 at 12:36Yes, the Linux interrupts are reentrant. https://unix.stackexchange.com/a/7172/40346
The Linux kernel is reentrant (like all UNIX ones), which simply means that multiple processes can be executed by the CPU. He doesn't have to wait till a disk access read is handled by the deadly slow HDD controller, the CPU can process some other stuff until the disk access is finished (which itself will trigger an interrupt if so).
Generally, an interrupt can be interrupted by an other interrupt (preemption), that's called 'Nested Execution'. Depending on the ...
Content Under CC-BY-SA license Linux - nested interrupts - Stack Overflow
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Generally, an interrupt can be interrupted by an other interrupt (preemption), that's called 'Nested Execution'. Depending on the architecture, there are still some critical functions which have to run without interruption (non-preemptive) by completely disabling interrupts.Explore further
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WEBDec 19, 2014 · Most modern OSes use re-entrant interrupt handlers that are designed such that they don't corrupt existing state regardless of how many nested interrupts occur -- …
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Understanding hardware interrupts and exceptions at processor …
WEBNov 3, 2015 · Read the section "Interrupt Overview" in the document I linked to above... For exceptions, the CPU internal circuitry state "knows" the interrupt. For hardware …
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What happens in vectored interrupt? - Stack Overflow
WEBJan 4, 2019 · In a computer, a vectored interrupt is an I/O interrupt that tells the part of the computer that handles I/O interrupts at the hardware level that a request for attention …
terminology - Interrupts and exceptions - Stack Overflow
- An interrupt is an exception at the hardware level (generally). The interrupt is a physical signal in the processor that tells the CPU to store its current state and jump to interrupt (or exception) handler code. Once the handler is done the original state is restored and processing can continue. An interrupt is always an exception, even when it's ...
how does the operating system treat few interrupts and keep …
WEBDec 27, 2019 · When the IF flag is clear, mask-able IRQs (which doesn't include other types of interrupts - software interrupts, exceptions) are postponed (not disabled) until the IF …
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WEBSep 12, 2018 · Interrupt: An event generated by a device in a computer to get attention of the CPU. Provided to improve processor utilization. To handle an interrupt, there is an …
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WEBOct 13, 2013 · Interrupt latency refers to the time from signaling the cpu about the interrupt to the execution of the first routine to handle it. On the other hand, interrupt response …
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WEBJan 9, 2022 · FGO=0 prevents the processor from writing OUTR as the output device hasn't accepted the last one yet. The interrupt service routine should check each flag, and if …
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WEBDec 22, 2015 · DOS uses interrupt 21h for its system calls. AH is used to demultiplex the various functions INT 21h provides. When a program is executed, DOS puts before it …
software Interrupt vs software exception - Stack Overflow
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Using Interupts in assembly - Stack Overflow
WEBSep 25, 2012 · To use interrupts on the hc11 there is four things you'll have to do: First decide what kind of interrupt you want to use. The hc11 has many different types so …
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