# git rev-parse -q --verify 84b028243ef07a3f65c1857343ada2b1022f8bed^{commit}
84b028243ef07a3f65c1857343ada2b1022f8bed
already have revision, skipping fetch
# git checkout -q -f -B kisskb 84b028243ef07a3f65c1857343ada2b1022f8bed
# git clean -qxdf
# < git log -1
# commit 84b028243ef07a3f65c1857343ada2b1022f8bed
# Author: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
# Date:   Mon Jun 17 17:16:19 2019 +1000
# 
#     KVM: PPC: Book3S HV: Only write DAWR[X] when handling h_set_dawr in real mode
#     
#     The hcall H_SET_DAWR is used by a guest to set the data address
#     watchpoint register (DAWR). This hcall is handled in the host in
#     kvmppc_h_set_dawr() which can be called in either real mode on the
#     guest exit path from hcall_try_real_mode() in book3s_hv_rmhandlers.S,
#     or in virtual mode when called from kvmppc_pseries_do_hcall() in
#     book3s_hv.c.
#     
#     The function kvmppc_h_set_dawr() updates the dawr and dawrx fields in
#     the vcpu struct accordingly and then also writes the respective values
#     into the DAWR and DAWRX registers directly. It is necessary to write
#     the registers directly here when calling the function in real mode
#     since the path to re-enter the guest won't do this. However when in
#     virtual mode the host DAWR and DAWRX values have already been
#     restored, and so writing the registers would overwrite these.
#     Additionally there is no reason to write the guest values here as
#     these will be read from the vcpu struct and written to the registers
#     appropriately the next time the vcpu is run.
#     
#     This also avoids the case when handling h_set_dawr for a nested guest
#     where the guest hypervisor isn't able to write the DAWR and DAWRX
#     registers directly and must rely on the real hypervisor to do this for
#     it when it calls H_ENTER_NESTED.
#     
#     Fixes: c1fe190c0672 ("powerpc: Add force enable of DAWR on P9 option")
#     Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/mips-linux/bin/mips-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/mips-linux/bin/mips-linux-ld --version
# < git log --format=%s --max-count=1 84b028243ef07a3f65c1857343ada2b1022f8bed
# < make -s -j 120 ARCH=mips O=/kisskb/build/powerpc-fixes_mips-defconfig_mips CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/mips-linux/bin/mips-linux-  defconfig
# make -s -j 120 ARCH=mips O=/kisskb/build/powerpc-fixes_mips-defconfig_mips CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/mips-linux/bin/mips-linux-  
/kisskb/src/arch/mips/vdso/Makefile:39: MIPS VDSO requires binutils >= 2.25
/kisskb/src/arch/mips/vdso/Makefile:39: MIPS VDSO requires binutils >= 2.25
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/kisskb/src/kernel/rcu/srcutree.c:140:32: warning: 'levelspread[<U3c80>]' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c:88:6: note: 'levelspread[<U3c80>]' was declared here
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:331:21: note: 'pdeo' was declared here
/kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write':
/kisskb/src/drivers/base/regmap/regmap.c:1850:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2589:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/bridge/br_netlink.c: In function 'br_afspec.isra.20':
/kisskb/src/net/bridge/br_netlink.c:652:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here
/kisskb/src/net/core/devlink.c: In function 'devlink_fmsg_snd.constprop.30':
/kisskb/src/net/core/devlink.c:4394:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/mips/vdso/Makefile:39: MIPS VDSO requires binutils >= 2.25
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
FIT description: Linux 5.2.0-rc2-g84b028243ef0
Created:         Tue Jun 18 23:14:01 2019
 Image 0 (kernel@0)
  Description:  Linux 5.2.0-rc2-g84b028243ef0
  Created:      Tue Jun 18 23:14:01 2019
  Type:         Kernel Image
  Compression:  gzip compressed
  Data Size:    4474880 Bytes = 4370.00 KiB = 4.27 MiB
  Architecture: MIPS
  OS:           Linux
  Load Address: 0x80100000
  Entry Point:  0x8084a950
  Hash algo:    sha1
  Hash value:   d2a153cdfbafd4ab5ce7914e635cf97b7e604542
 Image 1 (fdt@boston)
  Description:  img,boston Device Tree
  Created:      Tue Jun 18 23:14:01 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    3793 Bytes = 3.70 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   4799f50d688573234da6e9d7701234d394759ef4
 Image 2 (fdt@ni169445)
  Description:  NI 169445 device tree
  Created:      Tue Jun 18 23:14:01 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    1871 Bytes = 1.83 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   51b89b31605ee62038c8468c429af091dfc75ec7
 Image 3 (fdt@ocelot_pcb123)
  Description:  MSCC Ocelot PCB123 Device Tree
  Created:      Tue Jun 18 23:14:01 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    4603 Bytes = 4.50 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   33e429f316125d86bb863c2fe8d9c42fbcf90bfb
 Image 4 (fdt@ocelot_pcb120)
  Description:  MSCC Ocelot PCB120 Device Tree
  Created:      Tue Jun 18 23:14:01 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    5162 Bytes = 5.04 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   0c5db3f23ba8b80fafd8c8e4eacfcb8ad62a91ae
 Image 5 (fdt@xilfpga)
  Description:  MIPSfpga (xilfpga) Device Tree
  Created:      Tue Jun 18 23:14:01 2019
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    2708 Bytes = 2.64 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   63d058b780f65e22da30f0a183433765f1807f1d
 Default Configuration: 'conf@default'
 Configuration 0 (conf@default)
  Description:  Generic Linux kernel
  Kernel:       kernel@0
 Configuration 1 (conf@boston)
  Description:  Boston Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@boston
 Configuration 2 (conf@ni169445)
  Description:  NI 169445 Linux Kernel
  Kernel:       kernel@0
  FDT:          fdt@ni169445
 Configuration 3 (conf@ocelot_pcb123)
  Description:  Ocelot Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@ocelot_pcb123
 Configuration 4 (conf@ocelot_pcb120)
  Description:  Ocelot Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@ocelot_pcb120
 Configuration 5 (conf@xilfpga)
  Description:  MIPSfpga Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@xilfpga
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_mips-defconfig_mips
# Build took: 0:00:55.365573