powerpc, KVM: Rework KVM checks in first-level interrupt handlers

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Instead of branching out-of-line with the DO_KVM macro to check if we
are in a KVM guest at the time of an interrupt, this moves the KVM
check inline in the first-level interrupt handlers.  This speeds up
the non-KVM case and makes sure that none of the interrupt handlers
are missing the check.

Because the first-level interrupt handlers are now larger, some things
had to be move out of line in exceptions-64s.S.

This all necessitated some minor changes to the interrupt entry code
in KVM.  This also streamlines the book3s_32 KVM test.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>

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This commit is contained in:

Paul Mackerras 2011-06-29 00:18:26 +00:00 • committed by Avi Kivity

parent f05ed4d56e

commit b01c8b54a1

6 changed files with 247 additions and 154 deletions

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121

arch/powerpc/include/asm/exception-64s.h

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189

arch/powerpc/kernel/exceptions-64s.S

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78

arch/powerpc/kvm/book3s_rmhandlers.S

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7

arch/powerpc/kvm/book3s_segment.S

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2

arch/powerpc/platforms/iseries/exception.S

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4

arch/powerpc/platforms/iseries/exception.h

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