https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238294
Bug ID: 238294
Summary: r347566 adds instructions to support.S that are not
supported by Kaby Lake and older
Product: Base System
Version: 11.2-STABLE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
support.S now has AVX-512 instructions and my Kaby Lake system can no longer
build the kernel. I do not have a /etc/make.conf.
--- support.o ---
/usr/src/sys/amd64/amd64/support.S:1112:2: error: instruction requires: AVX-512
ISA
vmovdqa64 %zmm0, %gs:0x3c0
^
/usr/src/sys/amd64/amd64/support.S:1113:2: error: instruction requires: AVX-512
ISA
vpxor %zmm0, %zmm0, %zmm0
^
/usr/src/sys/amd64/amd64/support.S:1116:2: error: instruction requires: AVX-512
DQ ISA
vorpd (%rdx), %zmm0, %zmm0
^
/usr/src/sys/amd64/amd64/support.S:1117:2: error: instruction requires: AVX-512
DQ ISA
vorpd (%rdx), %zmm0, %zmm0
^
/usr/src/sys/amd64/amd64/support.S:1129:2: error: instruction requires: AVX-512
ISA
vmovdqa64 %gs:0x3c0, %zmm0
^
*** [support.o] Error code 1
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