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15.1/relnotes: Clarify Extended Destination ID

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We don't merely recognize bits in CPUID; we make use of it to allow
FreeBSD to run on larger VMs, including EC2 r8i.96xlarge.

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Colin Percival
2026-05-06 11:38:52 -07:00
parent e864ba8999
commit 05d4f53019
1 changed files with 2 additions and 1 deletions
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website/content/en/releases/15.1R/relnotes.adoc
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@@ -733,8 +733,9 @@ gitref:d29dd64b3f88[repository=src].
The amd64 architecture now supports LASS (Linear Address Space Separation), a security feature that helps isolate kernel and user address spaces. This change may affect debugging and low-level system programming.
gitref:532c8d3f90b9[repository=src].
The x86 cpuid code has added a flag for Extended Destination ID support, enabling support for up to 32768 APIC IDs in IO-APIC and MSI without interrupt remapping.
The amd64 architecture now supports the Extended Destination ID standard, enabling support for up to 32768 APIC IDs in IO-APIC and MSI without interrupt remapping; in particular, this adds support for EC2 "r8i.96xlarge" instances.
gitref:b54646e37a2b[repository=src].
{{< sponsored "Amazon" >}}
[[documentation]]
== Documentation