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From: "Philippe Mathieu-Daudé" <philmd@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Daniel P. Berrangé" <berrange@redhat.com>,
	qemu-block@nongnu.org,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Greg Kurz" <groug@kaod.org>,
	qemu-ppc@nongnu.org, "Gerd Hoffmann" <kraxel@redhat.com>,
	"Marc-André Lureau" <marcandre.lureau@redhat.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"David Gibson" <david@gibson.dropbear.id.au>,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>,
	"Cédric Le Goater" <clg@kaod.org>
Subject: [PATCH 10/23] hw/ppc/pnv: Avoid dynamic stack allocation
Date: Wed,  5 May 2021 23:10:34 +0200	[thread overview]
Message-ID: <20210505211047.1496765-11-philmd@redhat.com> (raw)
In-Reply-To: <20210505211047.1496765-1-philmd@redhat.com>

Use autofree heap allocation instead of variable-length
array on the stack.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/ppc/pnv.c               | 4 ++--
 hw/ppc/spapr.c             | 8 ++++----
 hw/ppc/spapr_pci_nvlink2.c | 2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 77af846cdfe..f6e3d37b751 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -141,7 +141,7 @@ static void pnv_dt_core(PnvChip *chip, PnvCore *pc, void *fdt)
     int smt_threads = CPU_CORE(pc)->nr_threads;
     CPUPPCState *env = &cpu->env;
     PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
-    uint32_t servers_prop[smt_threads];
+    g_autofree uint32_t *servers_prop = g_new(uint32_t, smt_threads);
     int i;
     uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40),
                        0xffffffff, 0xffffffff};
@@ -244,7 +244,7 @@ static void pnv_dt_core(PnvChip *chip, PnvCore *pc, void *fdt)
         servers_prop[i] = cpu_to_be32(pc->pir + i);
     }
     _FDT((fdt_setprop(fdt, offset, "ibm,ppc-interrupt-server#s",
-                       servers_prop, sizeof(servers_prop))));
+                       servers_prop, sizeof(*servers_prop) * smt_threads)));
 }
 
 static void pnv_dt_icp(PnvChip *chip, void *fdt, uint32_t pir,
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 529ff056dd2..31c2c0d97bf 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -176,8 +176,8 @@ static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu,
                                   int smt_threads)
 {
     int i, ret = 0;
-    uint32_t servers_prop[smt_threads];
-    uint32_t gservers_prop[smt_threads * 2];
+    g_autofree uint32_t *servers_prop = g_new(uint32_t, smt_threads);
+    g_autofree uint32_t *gservers_prop = g_new(uint32_t, smt_threads * 2);
     int index = spapr_get_vcpu_id(cpu);
 
     if (cpu->compat_pvr) {
@@ -195,12 +195,12 @@ static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu,
         gservers_prop[i*2 + 1] = 0;
     }
     ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-server#s",
-                      servers_prop, sizeof(servers_prop));
+                      servers_prop, sizeof(*servers_prop) * smt_threads);
     if (ret < 0) {
         return ret;
     }
     ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-gserver#s",
-                      gservers_prop, sizeof(gservers_prop));
+                      gservers_prop, sizeof(*gservers_prop) * smt_threads * 2);
 
     return ret;
 }
diff --git a/hw/ppc/spapr_pci_nvlink2.c b/hw/ppc/spapr_pci_nvlink2.c
index 8ef9b40a18d..bb61adb114c 100644
--- a/hw/ppc/spapr_pci_nvlink2.c
+++ b/hw/ppc/spapr_pci_nvlink2.c
@@ -401,7 +401,7 @@ void spapr_phb_nvgpu_populate_pcidev_dt(PCIDevice *dev, void *fdt, int offset,
             continue;
         }
         if (dev == nvslot->gpdev) {
-            uint32_t npus[nvslot->linknum];
+            g_autofree uint32_t *npus = g_new(uint32_t, nvslot->linknum);
 
             for (j = 0; j < nvslot->linknum; ++j) {
                 PCIDevice *npdev = nvslot->links[j].npdev;
-- 
2.26.3



  parent reply	other threads:[~2021-05-05 21:23 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-05 21:10 [PATCH 00/23] misc: Remove variable-length arrays on the stack Philippe Mathieu-Daudé
2021-05-05 21:10 ` [PATCH 01/23] block/vpc: Avoid dynamic stack allocation Philippe Mathieu-Daudé
2021-05-05 21:10 ` [PATCH 02/23] chardev/baum: Replace magic values by X_MAX / Y_MAX definitions Philippe Mathieu-Daudé
2021-05-05 21:12   ` Samuel Thibault
2021-05-05 21:24   ` Marc-André Lureau
2021-05-05 21:10 ` [PATCH 03/23] chardev/baum: Use definitions to avoid dynamic stack allocation Philippe Mathieu-Daudé
2021-05-05 21:14   ` Samuel Thibault
2021-05-05 21:27   ` Marc-André Lureau
2021-05-05 21:39     ` Samuel Thibault
2021-05-05 21:10 ` [PATCH 04/23] chardev/baum: Avoid " Philippe Mathieu-Daudé
2021-05-05 21:15   ` Samuel Thibault
2021-05-05 21:29   ` Marc-André Lureau
2021-05-05 21:10 ` [PATCH 05/23] io/channel-websock: Replace strlen(const_str) by sizeof(const_str) - 1 Philippe Mathieu-Daudé
2021-05-06  8:36   ` Daniel P. Berrangé
2021-05-05 21:10 ` [PATCH 06/23] hw/block/dataplane/virtio-blk: Avoid dynamic stack allocation Philippe Mathieu-Daudé
2021-05-06  8:53   ` Stefan Hajnoczi
2021-05-06  9:01     ` Philippe Mathieu-Daudé
2021-05-06 14:47       ` Stefan Hajnoczi
2021-05-06 15:19         ` Philippe Mathieu-Daudé
2021-05-10  9:09           ` Stefan Hajnoczi
2021-05-05 21:10 ` [PATCH 07/23] hw/block/nvme: Use definition to avoid " Philippe Mathieu-Daudé
2021-05-05 21:22   ` Keith Busch
2021-05-05 22:07     ` Philippe Mathieu-Daudé
2021-05-05 23:09       ` Eric Blake
2021-05-06  0:14         ` Warner Losh
2021-05-06  2:15         ` Keith Busch
2021-05-06  6:42           ` Philippe Mathieu-Daudé
2021-05-07 16:22           ` Richard Henderson
2021-05-06  6:27   ` Klaus Jensen
2021-05-07 15:59   ` Richard Henderson
2021-05-05 21:10 ` [PATCH 08/23] hw/block/nvme: Avoid " Philippe Mathieu-Daudé
2021-05-06  6:43   ` Klaus Jensen
2021-05-05 21:10 ` [PATCH 09/23] hw/net/e1000e_core: Use definition to avoid " Philippe Mathieu-Daudé
2021-05-06  3:35   ` Jason Wang
2021-05-07 16:29   ` Richard Henderson
2021-05-05 21:10 ` Philippe Mathieu-Daudé [this message]
2021-05-06  2:12   ` [PATCH 10/23] hw/ppc/pnv: Avoid " David Gibson
2021-05-05 21:10 ` [PATCH 11/23] hw/intc/xics: " Philippe Mathieu-Daudé
2021-05-06  2:13   ` David Gibson
2021-05-06  8:22   ` Greg Kurz
2021-05-06 13:52     ` Philippe Mathieu-Daudé
2021-05-05 21:10 ` [PATCH 12/23] hw/i386/multiboot: " Philippe Mathieu-Daudé
2021-05-07 16:27   ` Richard Henderson
2021-05-05 21:10 ` [PATCH 13/23] hw/usb/hcd-xhci: " Philippe Mathieu-Daudé
2021-05-07 16:34   ` Richard Henderson
2021-05-05 21:10 ` [PATCH 14/23] hw/usb/hcd-ohci: Use definition to avoid " Philippe Mathieu-Daudé
2021-05-07 16:39   ` Richard Henderson
2021-05-05 21:10 ` [PATCH 15/23] net: Avoid " Philippe Mathieu-Daudé
2021-05-06  2:15   ` David Gibson
2021-05-06  7:09   ` Jason Wang
2021-05-05 21:10 ` [PATCH 16/23] ui/curses: " Philippe Mathieu-Daudé
2021-05-07 16:42   ` Richard Henderson
2021-05-05 21:10 ` [PATCH 17/23] ui/spice-display: " Philippe Mathieu-Daudé
2021-05-05 21:10 ` [PATCH 18/23] ui/vnc-enc-hextile: Use definitions to avoid " Philippe Mathieu-Daudé
2021-05-07 16:46   ` Richard Henderson
2021-05-05 21:10 ` [PATCH 19/23] ui/vnc-enc-tight: Avoid " Philippe Mathieu-Daudé
2021-05-05 21:10 ` [PATCH 20/23] util/iov: " Philippe Mathieu-Daudé
2021-05-05 21:10 ` [PATCH 21/23] target/ppc/kvm: " Philippe Mathieu-Daudé
2021-05-06  2:16   ` David Gibson
2021-05-05 21:10 ` [PATCH 22/23] tests/unit/test-vmstate: " Philippe Mathieu-Daudé
2021-05-07 16:52   ` Richard Henderson
2021-05-05 21:10 ` [PATCH 23/23] configure: Prohibit variable-length allocations by using -Wvla CPPFLAG Philippe Mathieu-Daudé
2021-05-07 16:56   ` Richard Henderson

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