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MSI: Revision history

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19 February 2023

  • curprev 03:4103:41, 19 February 2023Dank talk contribs 709 bytes +9 No edit summary
  • curprev 03:4103:41, 19 February 2023Dank talk contribs 700 bytes +700 Created page with "Message-signaled interrupts were introduced in PCI 2.2, and are present in all versions of PCIe. Rather than a distinct physical hardware line for interrupt delivery, MSIs are in-band. This cuts down on interconnect complexity, allows for multiple distinct interrupts per device (up to 32, though Windows supports only 16), and eliminates a performance hit previously necessary for DMA coherency. MSI-X, introduced in PCIe 3.0, allows up to 2048 interrupt numbers per device..."