Nathan Whitehorn 8864f35942 Execute PowerPC64/AIM kernel from direct map region when possible. ... When the kernel can be in real mode in early boot, we can execute from high addresses aliased to the kernel's physical memory. If that high address has the first two bits set to 1 (0xc...), those addresses will automatically become part of the direct map. This reduces page table pressure from the kernel and it sets up the kernel to be used with radix translation, for which it has to be up here. This is accomplished by exploiting the fact that all PowerPC kernels are built as position-independent executables and relocate themselves on start. Before this patch, the kernel runs at 1:1 VA:PA, but that VA/PA is random and set by the bootloader. Very early, it processes its ELF relocations to operate wherever it happens to find itself. This patch uses that mechanism to re-enter and re-relocate the kernel a second time witha new base address set up in the early parts of powerpc_init(). Reviewed by: jhibbits Differential Revision: D14647		2018-03-13 15:03:58 +00:00
..
altivec.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
autoconf.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
bcopy.c	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
bus_machdep.c	Move the powerpc64 direct map base address from zero to high memory. This	2018-03-07 17:08:07 +00:00
busdma_machdep.c	Add support for NUMA domains to bus dma tags. This causes all memory	2018-01-12 23:34:16 +00:00
clock.c	PowerPC: Switch to more accurate unit to avoid division rounding	2018-02-20 07:30:57 +00:00
copyinout.c	PPC64: fix copyinout ranges	2018-01-17 09:36:48 +00:00
copystr.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
cpu_subr64.S	PowerNV: Put processor to power-save state in idle thread	2018-02-21 14:28:40 +00:00
cpu.c	Fix a minor typo.	2018-02-27 04:23:03 +00:00
db_disasm.c	Fix disassembly by adding back some deleted lines.	2016-12-16 04:47:29 +00:00
db_hwwatch.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
db_interface.c	Remove PIR from PCPU data. It has an implementation-defined meaning that	2017-12-31 20:23:39 +00:00
db_trace.c	Book-E debug trace fixes	2017-10-20 03:03:04 +00:00
dump_machdep.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
elf32_machdep.c	The recent bump of MAXDSIZ made 32-bit binary execution on 64-bit powerpc fail.	2018-01-03 20:20:43 +00:00
elf64_machdep.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
exec_machdep.c	Change the default MSR values used when starting userland and kernel	2018-02-01 05:31:24 +00:00
fpu.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
fuswintr.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
gdb_machdep.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
genassym.c	Move the powerpc64 direct map base address from zero to high memory. This	2018-03-07 17:08:07 +00:00
in_cksum.c	spdx: initial adoption of licensing ID tags.	2017-11-18 14:26:50 +00:00
interrupt.c	Clear the WE bit in C code rather than the asm	2017-11-08 01:23:37 +00:00
intr_machdep.c	PPC: Add place for NULL chars in intrnames	2018-01-26 09:38:40 +00:00
iommu_if.m
machdep.c	Execute PowerPC64/AIM kernel from direct map region when possible.	2018-03-13 15:03:58 +00:00
mem.c	Move the powerpc64 direct map base address from zero to high memory. This	2018-03-07 17:08:07 +00:00
mmu_if.m	Remove hard-coded trap-handling logic involving the segmented memory model	2018-01-29 04:33:41 +00:00
mp_machdep.c	Fix PowerMac G5 thermal management, plus likely other bugs, introduced in	2018-02-09 20:09:32 +00:00
nexus.c
openpic.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
pic_if.m
platform_if.m	Remove platform_cpu_idle() and platform_cpu_idle_wakeup() interfaces	2018-02-24 01:46:56 +00:00
platform.c	Remove assumption that all physical memory is available to the kernel and	2018-03-03 02:04:40 +00:00
pmap_dispatch.c	Remove hard-coded trap-handling logic involving the segmented memory model	2018-01-29 04:33:41 +00:00
ptrace_machdep.c
sc_machdep.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
setjmp.S
sigcode32.S
sigcode64.S
stack_machdep.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
suswintr.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
swtch32.S
swtch64.S	PPC64: fix TOC behavior on process initialization	2018-01-18 07:42:51 +00:00
syncicache.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
sys_machdep.c	sys/powerpc: further adoption of SPDX licensing ID tags.	2017-11-27 15:09:59 +00:00
trap.c	Split printtrap() into generic and CPU-specific components	2018-02-21 03:34:33 +00:00
uio_machdep.c	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
uma_machdep.c	Move the powerpc64 direct map base address from zero to high memory. This	2018-03-07 17:08:07 +00:00
vm_machdep.c	Change the default MSR values used when starting userland and kernel	2018-02-01 05:31:24 +00:00