013cc176c9
Summary: Discussing with Benjamin Herrenschmidt, MSIs, and edge-triggered interrupts in general, must not be masked in XICS and XIVE, else subsequent interrupts may be ignored. Testing locally on my Talos II (single CPU, 18-core POWER9), NVMe now works with MSI, improving read throughput by ~70% (900MB/s -> 1.67GB/s, with 64MB block size) over INTx interrupts, and snd_hda(4) now will actually play music with MSI. Previously, snd_hda(4) would not receive interrupts, timing out, and declaring the channels dead. This has also been tested by Kevin Bowling, and others, with great success. Kevin reported NVMe unusable on his Talos II prior to this patch. Reviewed by: nwhitehorn, kbowling Approved by: re(rgrimes) Differential Revision: https://reviews.freebsd.org/D17356 |
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| bin | ||
| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| stand | ||
| sys | ||
| targets | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .arcconfig | ||
| .arclint | ||
| .gitattributes | ||
| .gitignore | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.libcompat | ||
| Makefile.sys.inc | ||
| ObsoleteFiles.inc | ||
| README | ||
| README.md | ||
| UPDATING | ||
FreeBSD Source:
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