Proxmox-Port/qemu
1
0
Fork 0
mirror of https://github.com/qemu/qemu.git synced 2025-08-24 03:08:29 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ppc: define a default LPCR value

Browse Source 
This allows us to set the appropriate LPCR bits which will be used
when fixing the exception model for the HV mode.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
[clg: previous commit 26a7f1291b did not include the LPCR setting as
      it was not needed at the time, adapted commit log ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2016-06-21 23:48:47 +02:00 committed by David Gibson
parent a2e71b28e8
commit 61687db252
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
target-ppc/translate_init.c
View File

@ -8518,6 +8518,7 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
void cpu_ppc_set_papr(PowerPCCPU *cpu) void cpu_ppc_set_papr(PowerPCCPU *cpu)
{ {
CPUPPCState *env = &cpu->env; CPUPPCState *env = &cpu->env;
ppc_spr_t *lpcr = &env->spr_cb[SPR_LPCR];
ppc_spr_t *amor = &env->spr_cb[SPR_AMOR]; ppc_spr_t *amor = &env->spr_cb[SPR_AMOR];
/* PAPR always has exception vectors in RAM not ROM. To ensure this, /* PAPR always has exception vectors in RAM not ROM. To ensure this,
@ -8527,6 +8528,19 @@ void cpu_ppc_set_papr(PowerPCCPU *cpu)
*/ */
env->msr_mask &= ~((1ull << MSR_EP) | MSR_HVB); env->msr_mask &= ~((1ull << MSR_EP) | MSR_HVB);
/* Set emulated LPCR to not send interrupts to hypervisor. Note that
* under KVM, the actual HW LPCR will be set differently by KVM itself,
* the settings below ensure proper operations with TCG in absence of
* a real hypervisor
*/
lpcr->default_value &= ~(LPCR_VPM0 | LPCR_VPM1 | LPCR_ISL | LPCR_KBV);
lpcr->default_value |= LPCR_LPES0 | LPCR_LPES1;
/* We should be followed by a CPU reset but update the active value
* just in case...
*/
env->spr[SPR_LPCR] = lpcr->default_value;
/* Set a full AMOR so guest can use the AMR as it sees fit */ /* Set a full AMOR so guest can use the AMR as it sees fit */
env->spr[SPR_AMOR] = amor->default_value = 0xffffffffffffffffull; env->spr[SPR_AMOR] = amor->default_value = 0xffffffffffffffffull;