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x86/pvh: Use correct size value in GDT descriptor

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The limit field in a GDT descriptor is an inclusive bound, and therefore
one less than the size of the covered range.

Reviewed-by: Jason Andryuk <jason.andryuk@amd.com>
Tested-by: Jason Andryuk <jason.andryuk@amd.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Message-ID: <20241009160438.3884381-9-ardb+git@google.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Ard Biesheuvel
2024-10-09 18:04:41 +02:00
committed by Juergen Gross
parent e8fbc0d9ca
commit bb12f48cd1
1 changed files with 1 additions and 1 deletions
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2
arch/x86/platform/pvh/head.S
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@@ -224,7 +224,7 @@ SYM_CODE_END(pvh_start_xen)
.section ".init.data","aw"
.balign 8
SYM_DATA_START_LOCAL(gdt)
.word gdt_end - gdt_start
.word gdt_end - gdt_start - 1
.long _pa(gdt_start) /* x86-64 will overwrite if relocated. */
.word 0
SYM_DATA_END(gdt)