KVM: PPC: Book3S HV: Don't use existing "prodded" flag for XIVE escalations

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The prodded flag is only cleared at the beginning of H_CEDE,
so every time we have an escalation, we will cause the *next*
H_CEDE to return immediately.

Instead use a dedicated "irq_pending" flag to indicate that
a guest interrupt is pending for the VCPU. We don't reuse the
existing exception bitmap so as to avoid expensive atomic ops.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

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Benjamin Herrenschmidt 2018-01-12 13:37:13 +11:00 • committed by Paul Mackerras

parent bf4159da47

commit 2267ea7661

5 changed files with 14 additions and 3 deletions

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1

arch/powerpc/include/asm/kvm_host.h

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1

arch/powerpc/kernel/asm-offsets.c

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2

arch/powerpc/kvm/book3s_hv.c

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10

arch/powerpc/kvm/book3s_hv_rmhandlers.S

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3

arch/powerpc/kvm/book3s_xive.c

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