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KVM: PPC: ev_idle hcall support for e500 guests

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Signed-off-by: Liu Yu <yu.liu@freescale.com>
[varun: 64-bit changes]
Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com>
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Liu Yu-B13201
2012-07-03 05:48:53 +00:00
committed by Alexander Graf
parent 9202e07636
commit 2f979de8a7
3 changed files with 44 additions and 6 deletions
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11
arch/powerpc/kernel/epapr_paravirt.c
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@@ -21,6 +21,10 @@
#include <asm/epapr_hcalls.h>
#include <asm/cacheflush.h>
#include <asm/code-patching.h>
#include <asm/machdep.h>
extern void epapr_ev_idle(void);
extern u32 epapr_ev_idle_start[];
bool epapr_paravirt_enabled;
@@ -41,8 +45,13 @@ static int __init epapr_paravirt_init(void)
if (len % 4 || len > (4 * 4))
return -ENODEV;
for (i = 0; i < (len / 4); i++)
for (i = 0; i < (len / 4); i++) {
patch_instruction(epapr_hypercall_start + i, insts[i]);
patch_instruction(epapr_ev_idle_start + i, insts[i]);
}
if (of_get_property(hyper_node, "has-idle", NULL))
ppc_md.power_save = epapr_ev_idle;
epapr_paravirt_enabled = true;