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target/ppc: fix CPU hotplug when radix is enabled (TCG) 

But when a guest initializes radix mode, it issues a H_REGISTER_PROC_TBL
to update the LPCR of all CPUs. Hot-plugged CPUs inherit from the same
setting under KVM but not under TCG. So, Let's check for radix and update
the default LPCR to keep new CPUs in sync.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2017-07-14 18:13:58 +02:00 committed by David Gibson
parent df8658de43
commit 346ebfc6fb
1 changed files with 9 additions and 1 deletions
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10
target/ppc/translate_init.c
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@ -9011,8 +9011,16 @@ void cpu_ppc_set_papr(PowerPCCPU *cpu, PPCVirtualHypervisor *vhyp)
/* By default we choose legacy mode and switch to new hash or radix
* when a register process table hcall is made. So disable process
* tables and guest translation shootdown by default
*
* Hot-plugged CPUs inherit from the guest radix setting under
* KVM but not under TCG. Update the default LPCR to keep new
* CPUs in sync when radix is enabled.
*/
lpcr->default_value &= ~(LPCR_UPRT | LPCR_GTSE);
if (ppc64_radix_guest(cpu)) {
lpcr->default_value |= LPCR_UPRT | LPCR_GTSE;
} else {
lpcr->default_value &= ~(LPCR_UPRT | LPCR_GTSE);
}
lpcr->default_value |= LPCR_PDEE | LPCR_HDEE | LPCR_EEE | LPCR_DEE |
LPCR_OEE;
break;