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| author | Yuntao Wang <ytcoode@gmail.com> | 2023-08-07 11:45:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-20 13:58:53 +0300 |
| commit | 8d75ebf26a2eb09aa4f27e4868b3edd2205724cc (patch) | |
| tree | b9b3906e8d991b309e48f0dc5cd0dbb47f850ec7 /arch/x86 | |
| parent | 95846cd88c683876e15edb518483a568629c1804 (diff) | |
| download | linux-8d75ebf26a2eb09aa4f27e4868b3edd2205724cc.tar.xz | |
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>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/head64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 49f7629b17f7..bbc21798df10 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -80,7 +80,7 @@ static struct desc_struct startup_gdt[GDT_ENTRIES] = { * while the kernel still uses a direct mapping. */ static struct desc_ptr startup_gdt_descr = { - .size = sizeof(startup_gdt), + .size = sizeof(startup_gdt)-1, .address = 0, }; |