powerpc fixes for 5.1 #2

One fix to prevent runtime allocation of 16GB pages when running in a VM (as
 opposed to bare metal), because it doesn't work.
 
 A small fix to our recently added KCOV support to exempt some more code from
 being instrumented.
 
 Plus a few minor build fixes, a small dead code removal and a defconfig update.
 
 Thanks to:
   Alexey Kardashevskiy, Aneesh Kumar K.V, Christophe Leroy, Jason Yan, Joel
   Stanley, Mahesh Salgaonkar, Mathieu Malaterre.
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Merge tag 'powerpc-5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "One fix to prevent runtime allocation of 16GB pages when running in a
  VM (as opposed to bare metal), because it doesn't work.

  A small fix to our recently added KCOV support to exempt some more
  code from being instrumented.

  Plus a few minor build fixes, a small dead code removal and a
  defconfig update.

  Thanks to: Alexey Kardashevskiy, Aneesh Kumar K.V, Christophe Leroy,
  Jason Yan, Joel Stanley, Mahesh Salgaonkar, Mathieu Malaterre"

* tag 'powerpc-5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s: Include <asm/nmi.h> header file to fix a warning
  powerpc/powernv: Fix compile without CONFIG_TRACEPOINTS
  powerpc/mm: Disable kcov for SLB routines
  powerpc: remove dead code in head_fsl_booke.S
  powerpc/configs: Sync skiroot defconfig
  powerpc/hugetlb: Don't do runtime allocation of 16G pages in LPAR configuration

arch/powerpc/configs/skiroot_defconfig

@@ -37,7 +37,8 @@ CONFIG_MODULE_SIG=y
 CONFIG_MODULE_SIG_FORCE=y
 CONFIG_MODULE_SIG_SHA512=y
 CONFIG_PARTITION_ADVANCED=y
-# CONFIG_IOSCHED_DEADLINE is not set
+# CONFIG_MQ_IOSCHED_DEADLINE is not set
+# CONFIG_MQ_IOSCHED_KYBER is not set
 # CONFIG_PPC_VAS is not set
 # CONFIG_PPC_PSERIES is not set
 # CONFIG_PPC_OF_BOOT_TRAMPOLINE is not set
@@ -49,7 +50,6 @@ CONFIG_IRQ_ALL_CPUS=y
 CONFIG_NUMA=y
 # CONFIG_COMPACTION is not set
 # CONFIG_MIGRATION is not set
-# CONFIG_BOUNCE is not set
 CONFIG_PPC_64K_PAGES=y
 CONFIG_SCHED_SMT=y
 CONFIG_CMDLINE_BOOL=y
@@ -136,9 +136,11 @@ CONFIG_ACENIC_OMIT_TIGON_I=y
 # CONFIG_NET_VENDOR_AQUANTIA is not set
 # CONFIG_NET_VENDOR_ARC is not set
 # CONFIG_NET_VENDOR_ATHEROS is not set
+# CONFIG_NET_VENDOR_AURORA is not set
 CONFIG_TIGON3=m
 CONFIG_BNX2X=m
 # CONFIG_NET_VENDOR_BROCADE is not set
+# CONFIG_NET_VENDOR_CADENCE is not set
 # CONFIG_NET_CADENCE is not set
 # CONFIG_NET_VENDOR_CAVIUM is not set
 CONFIG_CHELSIO_T1=m
@@ -151,6 +153,7 @@ CONFIG_BE2NET=m
 # CONFIG_NET_VENDOR_HP is not set
 # CONFIG_NET_VENDOR_HUAWEI is not set
 CONFIG_E1000=m
+CONFIG_E1000E=m
 CONFIG_IGB=m
 CONFIG_IXGB=m
 CONFIG_IXGBE=m
@@ -161,15 +164,18 @@ CONFIG_MLX4_EN=m
 # CONFIG_MLX4_CORE_GEN2 is not set
 CONFIG_MLX5_CORE=m
 # CONFIG_NET_VENDOR_MICREL is not set
+# CONFIG_NET_VENDOR_MICROSEMI is not set
 CONFIG_MYRI10GE=m
 # CONFIG_NET_VENDOR_NATSEMI is not set
 # CONFIG_NET_VENDOR_NETRONOME is not set
 # CONFIG_NET_VENDOR_NI is not set
 # CONFIG_NET_VENDOR_NVIDIA is not set
 # CONFIG_NET_VENDOR_OKI is not set
-# CONFIG_NET_PACKET_ENGINE is not set
+# CONFIG_NET_VENDOR_PACKET_ENGINES is not set
 CONFIG_QLGE=m
 CONFIG_NETXEN_NIC=m
+CONFIG_QED=m
+CONFIG_QEDE=m
 # CONFIG_NET_VENDOR_QUALCOMM is not set
 # CONFIG_NET_VENDOR_RDC is not set
 # CONFIG_NET_VENDOR_REALTEK is not set

arch/powerpc/include/asm/book3s/64/hugetlb.h

@@ -39,6 +39,14 @@ static inline int hstate_get_psize(struct hstate *hstate)
 #ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE
 static inline bool gigantic_page_supported(void)
 {
+	/*
+	 * We used gigantic page reservation with hypervisor assist in some case.
+	 * We cannot use runtime allocation of gigantic pages in those platforms
+	 * This is hash translation mode LPARs.
+	 */
+	if (firmware_has_feature(FW_FEATURE_LPAR) && !radix_enabled())
+		return false;
+
 	return true;
 }
 #endif

arch/powerpc/kernel/head_fsl_booke.S

@@ -194,13 +194,6 @@ set_ivor:
 #endif
 	mtspr	SPRN_MAS4, r2
 
-#if 0
-	/* Enable DOZE */
-	mfspr	r2,SPRN_HID0
-	oris	r2,r2,HID0_DOZE@h
-	mtspr	SPRN_HID0, r2
-#endif
-
 #if !defined(CONFIG_BDI_SWITCH)
 	/*
 	 * The Abatron BDI JTAG debugger does not tolerate others

arch/powerpc/kernel/traps.c

@@ -71,6 +71,7 @@
 #include <sysdev/fsl_pci.h>
 #include <asm/kprobes.h>
 #include <asm/stacktrace.h>
+#include <asm/nmi.h>
 
 #if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC_CORE)
 int (*__debugger)(struct pt_regs *regs) __read_mostly;

arch/powerpc/mm/Makefile

@@ -52,3 +52,6 @@ obj-$(CONFIG_PPC_MEM_KEYS)	+= pkeys.o
 # This is necessary for booting with kcov enabled on book3e machines
 KCOV_INSTRUMENT_tlb_nohash.o := n
 KCOV_INSTRUMENT_fsl_booke_mmu.o := n
+
+# Instrumenting the SLB fault path can lead to duplicate SLB entries
+KCOV_INSTRUMENT_slb.o := n

arch/powerpc/platforms/powernv/opal-call.c

@@ -86,6 +86,7 @@ static s64 __opal_call_trace(s64 a0, s64 a1, s64 a2, s64 a3,
 			     s64 a4, s64 a5, s64 a6, s64 a7,
 			      unsigned long opcode, unsigned long msr)
 {
+	return 0;
 }
 
 #define DO_TRACE false