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x86/boot: Fix incorrect startup_gdt_descr.size
Since the size value is added to the base address to yield the last valid
byte address of the GDT, the current size value of startup_gdt_descr is
incorrect (too large by one), fix it.
[ mingo: This probably never mattered, because startup_gdt[] is only used
in a very controlled fashion - but make it consistent nevertheless. ]
Fixes: 866b556efa
("x86/head/64: Install startup GDT")
Signed-off-by: Yuntao Wang <ytcoode@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lore.kernel.org/r/20230807084547.217390-1-ytcoode@gmail.com
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1 changed files with 1 additions and 1 deletions
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@ -80,7 +80,7 @@ static struct desc_struct startup_gdt[GDT_ENTRIES] = {
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* while the kernel still uses a direct mapping.
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*/
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static struct desc_ptr startup_gdt_descr = {
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.size = sizeof(startup_gdt),
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.size = sizeof(startup_gdt)-1,
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.address = 0,
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};
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