Those are HV writeable, so we provide a dummy write. We eventually need
to provide a better emulation but for now this will get us going.
We also make them non-user readable as per the architecture.
Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
---
target-ppc/translate_init.c | 24 ++++++++++++++++--------
1 file changed, 16 insertions(+), 8 deletions(-)
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index e3887e7..e2efdf3 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -293,6 +293,12 @@ static void spr_read_purr (DisasContext *ctx, int gprn,
int sprn)
gen_helper_load_purr(cpu_gpr[gprn], cpu_env);
}
+__attribute__ (( unused ))
+static void spr_write_purr (DisasContext *ctx, int gprn, int sprn)
+{
+ // Temporary placeholder
+}
+
/* HDECR */
static void spr_read_hdecr (DisasContext *ctx, int gprn, int sprn)
{
@@ -7860,14 +7866,16 @@ static void gen_spr_book3s_purr(CPUPPCState *env)
{
#if !defined(CONFIG_USER_ONLY)
/* PURR & SPURR: Hack - treat these as aliases for the TB for now */
- spr_register_kvm(env, SPR_PURR, "PURR",
- &spr_read_purr, SPR_NOACCESS,
- &spr_read_purr, SPR_NOACCESS,
- KVM_REG_PPC_PURR, 0x00000000);
- spr_register_kvm(env, SPR_SPURR, "SPURR",
- &spr_read_purr, SPR_NOACCESS,
- &spr_read_purr, SPR_NOACCESS,
- KVM_REG_PPC_SPURR, 0x00000000);
+ spr_register_kvm_hv(env, SPR_PURR, "PURR",
+ SPR_NOACCESS, SPR_NOACCESS,
+ &spr_read_purr, SPR_NOACCESS,
+ &spr_read_purr, &spr_write_purr,
+ KVM_REG_PPC_PURR, 0x00000000);
+ spr_register_kvm_hv(env, SPR_SPURR, "SPURR",
+ SPR_NOACCESS, SPR_NOACCESS,
+ &spr_read_purr, SPR_NOACCESS,
+ &spr_read_purr, &spr_write_purr,
+ KVM_REG_PPC_SPURR, 0x00000000);
#endif
}
--
2.5.0
