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xen-locore: fix size in GDT descriptor

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There was an off-by-one in the GDT descriptor size field used by the
early Xen boot code. The GDT descriptor size should be the size of the
GDT minus one. No functional change expected as a result of this
change.

Sponsored by:	Citrix Systems R&D
This commit is contained in:
royger 2020-05-26 10:24:06 +00:00
parent a0462670ff
commit fa1cd03393
1 changed files with 2 additions and 2 deletions
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4
sys/amd64/amd64/xen-locore.S
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@ -207,7 +207,7 @@ PT2:
/* 64bit GDT */
gdtdesc:
.word gdtend - gdt
.word gdtend - gdt - 1
.long VTOP(gdt) # low
.long 0 # high
gdt:
@ -221,7 +221,7 @@ gdtend:
/* 32bit GDT */
gdtdesc32:
.word gdt32end - gdt32
.word gdt32end - gdt32 - 1
.long VTOP(gdt32)
.long 0
gdt32: