x86: fix fragile computation of vsyscall address

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Previously, the address of the vsyscall page (VSYSCALL_PHYS_ADDR,
VSYSCALL_VIRT_ADDR) was computed by arithmetic on the address of the
last section.  This leads to bugs when new sections are inserted, such
as the one fixed by commit d312ceda56.
Let's compute it from the current address instead.

Signed-off-by: Anders Kaseorg <andersk@ksplice.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

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Anders Kaseorg 2009-09-16 16:44:26 -04:00 • committed by H. Peter Anvin

parent daf7b9c921

commit d223246ef7

1 changed files with 7 additions and 12 deletions

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arch/x86/kernel/vmlinux.lds.S

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