x86/boot: Fix incorrect startup_gdt_descr.size
authorYuntao Wang <ytcoode@gmail.com>
Mon, 7 Aug 2023 08:45:47 +0000 (16:45 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 20 Nov 2023 10:58:53 +0000 (11:58 +0100)
commit8d75ebf26a2eb09aa4f27e4868b3edd2205724cc
treeb9b3906e8d991b309e48f0dc5cd0dbb47f850ec7
parent95846cd88c683876e15edb518483a568629c1804
x86/boot: Fix incorrect startup_gdt_descr.size

[ Upstream commit 001470fed5959d01faecbd57fcf2f60294da0de1 ]

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: 866b556efa12 ("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
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/x86/kernel/head64.c