diff options
Diffstat (limited to 'hw/ppc/spapr_caps.c')
| -rw-r--r-- | hw/ppc/spapr_caps.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c index 6cdc0c94e7..722b213d9a 100644 --- a/hw/ppc/spapr_caps.c +++ b/hw/ppc/spapr_caps.c @@ -26,6 +26,7 @@ #include "qapi/error.h" #include "qapi/visitor.h" #include "sysemu/hw_accel.h" +#include "exec/ram_addr.h" #include "target/ppc/cpu.h" #include "target/ppc/mmu-hash64.h" #include "cpu-models.h" @@ -304,14 +305,34 @@ static void cap_safe_indirect_branch_apply(sPAPRMachineState *spapr, #define VALUE_DESC_TRISTATE " (broken, workaround, fixed)" +void spapr_check_pagesize(sPAPRMachineState *spapr, hwaddr pagesize, + Error **errp) +{ + hwaddr maxpagesize = (1ULL << spapr->eff.caps[SPAPR_CAP_HPT_MAXPAGESIZE]); + + if (!kvmppc_hpt_needs_host_contiguous_pages()) { + return; + } + + if (maxpagesize > pagesize) { + error_setg(errp, + "Can't support %"HWADDR_PRIu" kiB guest pages with %" + HWADDR_PRIu" kiB host pages with this KVM implementation", + maxpagesize >> 10, pagesize >> 10); + } +} + static void cap_hpt_maxpagesize_apply(sPAPRMachineState *spapr, uint8_t val, Error **errp) { if (val < 12) { error_setg(errp, "Require at least 4kiB hpt-max-page-size"); + return; } else if (val < 16) { warn_report("Many guests require at least 64kiB hpt-max-page-size"); } + + spapr_check_pagesize(spapr, qemu_getrampagesize(), errp); } sPAPRCapabilityInfo capability_table[SPAPR_CAP_NUM] = { |