From f7c4acf572ee0219550ca895d1e09c7d9a8f4f79 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 8 Jan 2021 17:12:12 +0000 Subject: hw/ppc: Remove unused ppcuic_init() Now we've converted all the callsites to directly create the QOM UIC device themselves, the ppcuic_init() function is unused and can be removed. The enum defining PPCUIC symbolic constants can be moved to the ppc-uic.h header where it more naturally belongs. Signed-off-by: Peter Maydell Reviewed-by: Edgar E. Iglesias Tested-by: Edgar E. Iglesias Message-Id: <20210108171212.16500-5-peter.maydell@linaro.org> Signed-off-by: David Gibson --- include/hw/ppc/ppc4xx.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'include/hw/ppc') diff --git a/include/hw/ppc/ppc4xx.h b/include/hw/ppc/ppc4xx.h index cc19c8da5b..980f964b5a 100644 --- a/include/hw/ppc/ppc4xx.h +++ b/include/hw/ppc/ppc4xx.h @@ -33,15 +33,6 @@ PowerPCCPU *ppc4xx_init(const char *cpu_model, clk_setup_t *cpu_clk, clk_setup_t *tb_clk, uint32_t sysclk); -/* PowerPC 4xx universal interrupt controller */ -enum { - PPCUIC_OUTPUT_INT = 0, - PPCUIC_OUTPUT_CINT = 1, - PPCUIC_OUTPUT_NB, -}; -qemu_irq *ppcuic_init (CPUPPCState *env, qemu_irq *irqs, - uint32_t dcr_base, int has_ssr, int has_vr); - void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks, MemoryRegion ram_memories[], hwaddr ram_bases[], hwaddr ram_sizes[], -- cgit 1.4.1 From 73598c75df0585e039825e642adede21912dabc7 Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Fri, 8 Jan 2021 18:31:27 +0100 Subject: spapr: Improve handling of memory unplug with old guests Since commit 1e8b5b1aa16b ("spapr: Allow memory unplug to always succeed") trying to unplug memory from a guest that doesn't support it (eg. rhel6) no longer generates an error like it used to. Instead, it leaves the memory around : only a subsequent reboot or manual use of drmgr within the guest can complete the hot-unplug sequence. A flag was added to SpaprMachineClass so that this new behavior only applies to the default machine type. We can do better. CAS processes all pending hot-unplug requests. This means that we don't really care about what the guest supports if the hot-unplug request happens before CAS. All guests that we care for, even old ones, set enough bits in OV5 that lead to a non-empty bitmap in spapr->ov5_cas. Use that as a heuristic to decide if CAS has already occured or not. Always accept unplug requests that happen before CAS since CAS will process them. Restore the previous behavior of rejecting them after CAS when we know that the guest doesn't support memory hot-unplug. This behavior is suitable for all machine types : this allows to drop the pre_6_0_memory_unplug flag. Fixes: 1e8b5b1aa16b ("spapr: Allow memory unplug to always succeed") Signed-off-by: Greg Kurz Message-Id: <161012708715.801107.11418801796987916516.stgit@bahia.lan> Reviewed-by: Daniel Henrique Barboza Signed-off-by: David Gibson --- hw/ppc/spapr.c | 24 +++++++++++++----------- hw/ppc/spapr_events.c | 3 +-- hw/ppc/spapr_ovec.c | 7 +++++++ include/hw/ppc/spapr.h | 2 +- include/hw/ppc/spapr_ovec.h | 1 + 5 files changed, 23 insertions(+), 14 deletions(-) (limited to 'include/hw/ppc') diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 2c403b574e..6c47466fc2 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -4048,6 +4048,18 @@ static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, } } +bool spapr_memory_hot_unplug_supported(SpaprMachineState *spapr) +{ + return spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT) || + /* + * CAS will process all pending unplug requests. + * + * HACK: a guest could theoretically have cleared all bits in OV5, + * but none of the guests we care for do. + */ + spapr_ovec_empty(spapr->ov5_cas); +} + static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { @@ -4056,16 +4068,9 @@ static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev, SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { - if (!smc->pre_6_0_memory_unplug || - spapr_ovec_test(sms->ov5_cas, OV5_HP_EVT)) { + if (spapr_memory_hot_unplug_supported(sms)) { spapr_memory_unplug_request(hotplug_dev, dev, errp); } else { - /* NOTE: this means there is a window after guest reset, prior to - * CAS negotiation, where unplug requests will fail due to the - * capability not being detected yet. This is a bit different than - * the case with PCI unplug, where the events will be queued and - * eventually handled by the guest after boot - */ error_setg(errp, "Memory hot unplug not supported for this guest"); } } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { @@ -4543,11 +4548,8 @@ DEFINE_SPAPR_MACHINE(6_0, "6.0", true); */ static void spapr_machine_5_2_class_options(MachineClass *mc) { - SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); - spapr_machine_6_0_class_options(mc); compat_props_add(mc->compat_props, hw_compat_5_2, hw_compat_5_2_len); - smc->pre_6_0_memory_unplug = true; } DEFINE_SPAPR_MACHINE(5_2, "5.2", false); diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c index 6aedd988b3..d51daedfa6 100644 --- a/hw/ppc/spapr_events.c +++ b/hw/ppc/spapr_events.c @@ -658,8 +658,7 @@ static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, /* we should not be using count_indexed value unless the guest * supports dedicated hotplug event source */ - g_assert(!SPAPR_MACHINE_GET_CLASS(spapr)->pre_6_0_memory_unplug || - spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)); + g_assert(spapr_memory_hot_unplug_supported(spapr)); hp->drc_id.count_indexed.count = cpu_to_be32(drc_id->count_indexed.count); hp->drc_id.count_indexed.index = diff --git a/hw/ppc/spapr_ovec.c b/hw/ppc/spapr_ovec.c index dd003f1763..b2567caa5c 100644 --- a/hw/ppc/spapr_ovec.c +++ b/hw/ppc/spapr_ovec.c @@ -125,6 +125,13 @@ bool spapr_ovec_test(SpaprOptionVector *ov, long bitnr) return test_bit(bitnr, ov->bitmap) ? true : false; } +bool spapr_ovec_empty(SpaprOptionVector *ov) +{ + g_assert(ov); + + return bitmap_empty(ov->bitmap, OV_MAXBITS); +} + static void guest_byte_to_bitmap(uint8_t entry, unsigned long *bitmap, long bitmap_offset) { diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 1cc19575f5..3ad2ff7132 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -142,7 +142,6 @@ struct SpaprMachineClass { hwaddr rma_limit; /* clamp the RMA to this size */ bool pre_5_1_assoc_refpoints; bool pre_5_2_numa_associativity; - bool pre_6_0_memory_unplug; bool (*phb_placement)(SpaprMachineState *spapr, uint32_t index, uint64_t *buid, hwaddr *pio, @@ -950,4 +949,5 @@ bool spapr_check_pagesize(SpaprMachineState *spapr, hwaddr pagesize, void spapr_set_all_lpcrs(target_ulong value, target_ulong mask); hwaddr spapr_get_rtas_addr(void); +bool spapr_memory_hot_unplug_supported(SpaprMachineState *spapr); #endif /* HW_SPAPR_H */ diff --git a/include/hw/ppc/spapr_ovec.h b/include/hw/ppc/spapr_ovec.h index d4dee9e06a..48b716a060 100644 --- a/include/hw/ppc/spapr_ovec.h +++ b/include/hw/ppc/spapr_ovec.h @@ -71,6 +71,7 @@ void spapr_ovec_cleanup(SpaprOptionVector *ov); void spapr_ovec_set(SpaprOptionVector *ov, long bitnr); void spapr_ovec_clear(SpaprOptionVector *ov, long bitnr); bool spapr_ovec_test(SpaprOptionVector *ov, long bitnr); +bool spapr_ovec_empty(SpaprOptionVector *ov); SpaprOptionVector *spapr_ovec_parse_vector(target_ulong table_addr, int vector); int spapr_dt_ovec(void *fdt, int fdt_offset, SpaprOptionVector *ov, const char *name); -- cgit 1.4.1 From bb51f2fae746a79164a4da2a5b58b64ae7defb0b Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Thu, 14 Jan 2021 15:06:22 -0300 Subject: spapr.h: fix trailing whitespace in phb_placement This whitespace was messing with lots of diffs if you happen to use an editor that eliminates trailing whitespaces on file save. Signed-off-by: Daniel Henrique Barboza Message-Id: <20210114180628.1675603-2-danielhb413@gmail.com> Signed-off-by: David Gibson --- include/hw/ppc/spapr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/hw/ppc') diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 3ad2ff7132..7f785409e4 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -144,7 +144,7 @@ struct SpaprMachineClass { bool pre_5_2_numa_associativity; bool (*phb_placement)(SpaprMachineState *spapr, uint32_t index, - uint64_t *buid, hwaddr *pio, + uint64_t *buid, hwaddr *pio, hwaddr *mmio32, hwaddr *mmio64, unsigned n_dma, uint32_t *liobns, hwaddr *nv2gpa, hwaddr *nv2atsd, Error **errp); -- cgit 1.4.1 From eb72b639886001c19d91b34840641bdd2f46646d Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Thu, 14 Jan 2021 15:06:23 -0300 Subject: spapr_hcall.c: make do_client_architecture_support static The function is called only inside spapr_hcall.c. Signed-off-by: Daniel Henrique Barboza Message-Id: <20210114180628.1675603-3-danielhb413@gmail.com> Signed-off-by: David Gibson --- hw/ppc/spapr_hcall.c | 1 + include/hw/ppc/spapr.h | 5 ----- 2 files changed, 1 insertion(+), 5 deletions(-) (limited to 'include/hw/ppc') diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index e5dfc1ba7a..7b5cd3553c 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -1632,6 +1632,7 @@ static uint32_t cas_check_pvr(PowerPCCPU *cpu, uint32_t max_compat, return best_compat; } +static target_ulong do_client_architecture_support(PowerPCCPU *cpu, SpaprMachineState *spapr, target_ulong vec, diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 7f785409e4..c27c7ce515 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -582,11 +582,6 @@ void spapr_register_hypercall(target_ulong opcode, spapr_hcall_fn fn); target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode, target_ulong *args); -target_ulong do_client_architecture_support(PowerPCCPU *cpu, - SpaprMachineState *spapr, - target_ulong addr, - target_ulong fdt_bufsize); - /* Virtual Processor Area structure constants */ #define VPA_MIN_SIZE 640 #define VPA_SIZE_OFFSET 0x4 -- cgit 1.4.1