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KVM: PPC: booke: Allow multiple exception types

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Current kvmppc_booke_handlers uses the same macro (KVM_HANDLER) and
all handlers are considered to be the same size. This will not be
the case if we want to use different macros for different handlers.

This patch improves the kvmppc_booke_handler so that it can
support different macros for different handlers.

Signed-off-by: Liu Yu <yu.liu@freescale.com>
[bharat.bhushan@freescale.com: Substantial changes]
Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Bharat Bhushan
2013-01-15 22:24:39 +00:00
committed by Alexander Graf
parent ffe129ecd7
commit 1d542d9c2b
5 changed files with 54 additions and 16 deletions
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14
arch/powerpc/kvm/booke.c
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@@ -1594,7 +1594,9 @@ int __init kvmppc_booke_init(void)
{
#ifndef CONFIG_KVM_BOOKE_HV
unsigned long ivor[16];
unsigned long *handler = kvmppc_booke_handler_addr;
unsigned long max_ivor = 0;
unsigned long handler_len;
int i;
/* We install our own exception handlers by hijacking IVPR. IVPR must
@@ -1627,14 +1629,16 @@ int __init kvmppc_booke_init(void)
for (i = 0; i < 16; i++) {
if (ivor[i] > max_ivor)
max_ivor = ivor[i];
max_ivor = i;
handler_len = handler[i + 1] - handler[i];
memcpy((void *)kvmppc_booke_handlers + ivor[i],
kvmppc_handlers_start + i * kvmppc_handler_len,
kvmppc_handler_len);
(void *)handler[i], handler_len);
}
flush_icache_range(kvmppc_booke_handlers,
kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);
handler_len = handler[max_ivor + 1] - handler[max_ivor];
flush_icache_range(kvmppc_booke_handlers, kvmppc_booke_handlers +
ivor[max_ivor] + handler_len);
#endif /* !BOOKE_HV */
return 0;
}