x86: change static allocation of trampoline area

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Impact: fix trampoline sizing bug, save space

While debugging a suspend-to-RAM related issue it occured to me that
if the trampoline code had grown past 4 KB, we would have been
allocating too little memory for it, since the 4 KB size of the
trampoline is hardcoded into arch/x86/kernel/e820.c .  Change that
by making the kernel compute the trampoline size and allocate as much
memory as necessary.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Rafael J. Wysocki 2008-12-08 00:50:22 +01:00 • committed by Ingo Molnar

parent 218d11a8b0

commit 3e1e9002aa

5 changed files with 30 additions and 18 deletions

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7

arch/x86/include/asm/trampoline.h

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16

arch/x86/kernel/e820.c

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3

arch/x86/kernel/head32.c

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3

arch/x86/kernel/head64.c

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19

arch/x86/kernel/trampoline.c

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