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spapr: Clean up LPCR updates from hypercalls 

There are several places in spapr_hcall.c where we need to update the LPCR
value on all CPUs.  We do this with the set_spr() helper.  That's not
really correct because this directly sets the SPR value, without going
through the ppc_store_lpcr() helper which may need to update state based
on the LPCR change.

In fact, set_spr() is only ever used for the LPCR, so replace it with an
explicit LPCR updated which uses the right low-level helper.  While we're
there, move the CPU_FOREACH() which was in every one of the callers into
the new helper: set_all_lpcrs().

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Tested-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
David Gibson 2018-05-01 15:14:52 +10:00
parent 84369f639e
commit 295b6c26ac
1 changed files with 20 additions and 30 deletions
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50
hw/ppc/spapr_hcall.c
View File

@ -15,32 +15,35 @@
#include "hw/ppc/spapr_ovec.h"
#include "mmu-book3s-v3.h"
struct SPRSyncState {
int spr;
struct LPCRSyncState {
target_ulong value;
target_ulong mask;
};
static void do_spr_sync(CPUState *cs, run_on_cpu_data arg)
static void do_lpcr_sync(CPUState *cs, run_on_cpu_data arg)
{
struct SPRSyncState *s = arg.host_ptr;
struct LPCRSyncState *s = arg.host_ptr;
PowerPCCPU *cpu = POWERPC_CPU(cs);
CPUPPCState *env = &cpu->env;
target_ulong lpcr;
cpu_synchronize_state(cs);
env->spr[s->spr] &= ~s->mask;
env->spr[s->spr] |= s->value;
lpcr = env->spr[SPR_LPCR];
lpcr &= ~s->mask;
lpcr |= s->value;
ppc_store_lpcr(cpu, lpcr);
}
static void set_spr(CPUState *cs, int spr, target_ulong value,
target_ulong mask)
static void set_all_lpcrs(target_ulong value, target_ulong mask)
{
struct SPRSyncState s = {
.spr = spr,
CPUState *cs;
struct LPCRSyncState s = {
.value = value,
.mask = mask
};
run_on_cpu(cs, do_spr_sync, RUN_ON_CPU_HOST_PTR(&s));
CPU_FOREACH(cs) {
run_on_cpu(cs, do_lpcr_sync, RUN_ON_CPU_HOST_PTR(&s));
}
}
static bool has_spr(PowerPCCPU *cpu, int spr)
@ -1235,8 +1238,6 @@ static target_ulong h_set_mode_resource_le(PowerPCCPU *cpu,
target_ulong value1,
target_ulong value2)
{
CPUState *cs;
if (value1) {
return H_P3;
}
@ -1246,16 +1247,12 @@ static target_ulong h_set_mode_resource_le(PowerPCCPU *cpu,
switch (mflags) {
case H_SET_MODE_ENDIAN_BIG:
CPU_FOREACH(cs) {
set_spr(cs, SPR_LPCR, 0, LPCR_ILE);
}
set_all_lpcrs(0, LPCR_ILE);
spapr_pci_switch_vga(true);
return H_SUCCESS;
case H_SET_MODE_ENDIAN_LITTLE:
CPU_FOREACH(cs) {
set_spr(cs, SPR_LPCR, LPCR_ILE, LPCR_ILE);
}
set_all_lpcrs(LPCR_ILE, LPCR_ILE);
spapr_pci_switch_vga(false);
return H_SUCCESS;
}
@ -1268,7 +1265,6 @@ static target_ulong h_set_mode_resource_addr_trans_mode(PowerPCCPU *cpu,
target_ulong value1,
target_ulong value2)
{
CPUState *cs;
PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
if (!(pcc->insns_flags2 & PPC2_ISA207S)) {
@ -1285,9 +1281,7 @@ static target_ulong h_set_mode_resource_addr_trans_mode(PowerPCCPU *cpu,
return H_UNSUPPORTED_FLAG;
}
CPU_FOREACH(cs) {
set_spr(cs, SPR_LPCR, mflags << LPCR_AIL_SHIFT, LPCR_AIL);
}
set_all_lpcrs(mflags << LPCR_AIL_SHIFT, LPCR_AIL);
return H_SUCCESS;
}
@ -1364,7 +1358,6 @@ static target_ulong h_register_process_table(PowerPCCPU *cpu,
target_ulong opcode,
target_ulong *args)
{
CPUState *cs;
target_ulong flags = args[0];
target_ulong proc_tbl = args[1];
target_ulong page_size = args[2];
@ -1422,12 +1415,9 @@ static target_ulong h_register_process_table(PowerPCCPU *cpu,
spapr->patb_entry = cproc; /* Save new process table */
/* Update the UPRT and GTSE bits in the LPCR for all cpus */
CPU_FOREACH(cs) {
set_spr(cs, SPR_LPCR,
((flags & (FLAG_RADIX | FLAG_HASH_PROC_TBL)) ? LPCR_UPRT : 0) |
((flags & FLAG_GTSE) ? LPCR_GTSE : 0),
LPCR_UPRT | LPCR_GTSE);
}
set_all_lpcrs(((flags & (FLAG_RADIX | FLAG_HASH_PROC_TBL)) ? LPCR_UPRT : 0) |
((flags & FLAG_GTSE) ? LPCR_GTSE : 0),
LPCR_UPRT | LPCR_GTSE);
if (kvm_enabled()) {
return kvmppc_configure_v3_mmu(cpu, flags & FLAG_RADIX,