AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/arm/kernel
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Vladimir Murzin 72cd4064fc ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of 
ARMv8M introduces support for Security extension to M class, among
other things it affects exception handling, especially, encoding of
EXC_RETURN.

The new bits have been added:

Bit [6]	Secure or Non-secure stack
Bit [5]	Default callee register stacking
Bit [0]	Exception Secure

which conflicts with hard-coded value of EXC_RETURN:

In fact, we only care of few bits:

Bit [3]	 Mode (0 - Handler, 1 - Thread)
Bit [2]	 Stack pointer selection (0 - Main, 1 - Process)

We can toggle only those bits and left other bits as they were on
exception entry.

It is basically, what patch does - saves EXC_RETURN when we do
transition form Thread to Handler mode (it is first svc), so later
saved value is used instead of EXC_RET_THREADMODE_PROCESSSTACK.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-02-01 21:44:19 +00:00
..
.gitignore
arch_timer.c arch_timer: Move to generic sched_clock framework 2013-10-09 16:54:10 -07:00
armksyms.c ARM: 8788/1: ftrace: remove old mcount support 2018-09-19 10:44:50 +01:00
asm-offsets.c ARM: smp: add support for per-task stack canaries 2018-12-12 13:20:07 -08:00
atags_compat.c ARM: convert printk(KERN_* to pr_* 2014-11-21 15:24:50 +00:00
atags_parse.c vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled 2018-12-20 16:32:56 +00:00
atags_proc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atags.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bios32.c PCI: Remove PCI_REASSIGN_ALL_RSRC use on arm and arm64 2017-12-18 23:07:43 -06:00
bugs.c ARM: clean up per-processor check_bugs method call 2018-11-12 10:51:01 +00:00
cpuidle.c ARM: Convert to using %pOF instead of full_name 2017-08-16 22:25:30 +02:00
crash_dump.c ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr 2014-04-07 12:10:00 +01:00
debug.S Merge branches 'fixes', 'misc' and 'sa1111-for-next' into for-next 2017-11-08 19:42:43 +00:00
devtree.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
dma-isa.c ARM: convert printk(KERN_* to pr_* 2014-11-21 15:24:50 +00:00
dma.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
early_printk.c ARM: 8705/1: early_printk: use printascii() rather than printch() 2017-10-12 11:29:29 +01:00
efi.c ARM/efi: Apply strict permissions for UEFI Runtime Services regions 2016-04-28 11:33:53 +02:00
elf.c Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-11-16 12:50:35 -08:00
entry-armv.S ARM: Convert to GENERIC_IRQ_MULTI_HANDLER 2018-08-03 12:14:08 +02:00
entry-common.S ARM: 8802/1: Call syscall_trace_exit even when system call skipped 2018-10-10 13:53:12 +01:00
entry-ftrace.S ARM: 8788/1: ftrace: remove old mcount support 2018-09-19 10:44:50 +01:00
entry-header.S ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of 2019-02-01 21:44:19 +00:00
entry-v7m.S ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of 2019-02-01 21:44:19 +00:00
fiq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fiqasm.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
ftrace.c ARM: function_graph: Simplify with function_graph_enter() 2018-11-27 20:29:52 -05:00
head-common.S ARM: make lookup_processor_type() non-__init 2018-11-12 10:51:01 +00:00
head-inflate-data.c ARM: XIP kernel: store .data compressed in ROM 2017-09-10 19:34:53 -04:00
head-nommu.S Merge branches 'fixes', 'misc' and 'spectre' into for-linus 2018-08-13 16:28:50 +01:00
head.S ARM: 8811/1: always list both ldrd/strd registers explicitly 2018-11-12 10:51:54 +00:00
hibernate.c ARM: use virt_to_idmap() for soft_restart() 2016-02-08 15:48:32 +00:00
hw_breakpoint.c perf/arch/arm: Implement hw_breakpoint_arch_parse() 2018-06-26 09:07:56 +02:00
hyp-stub.S ARM: align .data section 2017-08-14 16:22:55 +01:00
insn.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq.c ARM: Convert to GENERIC_IRQ_MULTI_HANDLER 2018-08-03 12:14:08 +02:00
isa.c arm: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:15 -07:00
iwmmxt.S ARM: align .data section 2017-08-14 16:22:55 +01:00
jump_label.c jump_label: move 'asm goto' support test to Kconfig 2019-01-06 09:46:51 +09:00
kgdb.c kgdb/treewide: constify struct kgdb_arch arch_kgdb_ops 2018-12-30 08:33:06 +00:00
machine_kexec.c ARM: kexec: record parent context registers for non-crash CPUs 2018-05-19 11:35:56 +01:00
Makefile ARM: bugs: prepare processor bug infrastructure 2018-05-31 10:39:18 +01:00
module-plts.c ARM: 8662/1: module: split core and init PLT sections 2017-03-17 10:01:28 +00:00
module.c ARM: Silence first allocation with CONFIG_ARM_MODULE_PLTS=y 2017-05-11 14:43:31 +01:00
module.lds License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
opcodes.c
paravirt.c x86/paravirt: Use a single ops structure 2018-09-03 16:50:35 +02:00
patch.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf_callchain.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
perf_event_v6.c arm_pmu: Tidy up clear_event_idx call backs 2018-07-10 18:19:02 +01:00
perf_event_v7.c arm_pmu: Tidy up clear_event_idx call backs 2018-07-10 18:19:02 +01:00
perf_event_xscale.c arm_pmu: Tidy up clear_event_idx call backs 2018-07-10 18:19:02 +01:00
perf_regs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pj4-cp0.c ARM: 8452/3: PJ4: make coprocessor access sequences buildable in Thumb2 mode 2016-01-04 11:12:10 +00:00
process.c ARM: smp: add support for per-task stack canaries 2018-12-12 13:20:07 -08:00
psci_smp.c ARM: use const and __initconst for smp_operations 2015-12-01 22:17:45 +01:00
ptrace.c signal/arm: Use force_sig_fault where appropriate 2018-09-27 21:57:39 +02:00
reboot.c ARM: soft-reboot into same mode that we entered the kernel 2017-04-09 07:49:24 -07:00
reboot.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
relocate_kernel.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
return_address.c ARM: 8328/1: remove empty preprocessor #else branch 2015-03-28 16:54:53 +00:00
setup.c Merge branches 'misc', 'sa1100-for-next' and 'spectre' into for-linus 2019-01-02 10:37:05 +00:00
signal.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
signal.h ARM: signal handling support for FDPIC_FUNCPTRS functions 2017-09-10 19:31:46 -04:00
sigreturn_codes.S ARM: signal handling support for FDPIC_FUNCPTRS functions 2017-09-10 19:31:46 -04:00
sleep.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
smccc-call.S arm: kernel: Add SMC structure parameter 2017-02-03 18:46:33 +00:00
smp_scu.c ARM: smp_scu: allow the platform code to read the SCU CPU status 2017-10-29 08:29:30 -07:00
smp_tlb.c ARM: 8613/1: Fix the uaccess crash on PB11MPCore 2017-01-16 17:30:46 +00:00
smp_twd.c ARM: 8822/1: smp_twd: Remove legacy TWD registration 2019-02-01 21:44:10 +00:00
smp.c Merge branches 'misc', 'sa1100-for-next' and 'spectre' into for-linus 2019-01-02 10:37:05 +00:00
stacktrace.c ARM: probes: avoid adding kprobes to sensitive kernel-entry/exit code 2017-12-17 22:14:21 +00:00
suspend.c ARM: bugs: hook processor bug checking into SMP and suspend paths 2018-05-31 10:39:29 +01:00
swp_emulate.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
sys_arm.c mm: add ksys_fadvise64_64() helper; remove in-kernel call to sys_fadvise64_64() 2018-04-02 20:16:10 +02:00
sys_oabi-compat.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
tcm.c ARM: 8388/1: tcm: Don't crash when TCM banks are protected by TrustZone 2015-06-06 10:37:28 +01:00
thumbee.c ARM: convert printk(KERN_* to pr_* 2014-11-21 15:24:50 +00:00
time.c ARM/time: Remove read_boot_clock64() 2018-07-20 00:02:41 +02:00
topology.c ARM: topology: remove unneeded check for /cpus node 2018-09-28 14:25:58 -05:00
traps.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
unwind.c ARM: 8176/1: Use current_stack_pointer in unwind_backtrace 2014-11-13 23:58:09 +00:00
v7m.c ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines 2013-09-02 13:49:29 +01:00
vdso.c ARM: 8748/1: mm: Define vdso_start, vdso_end as array 2018-03-24 14:27:49 +00:00
vmlinux-xip.lds.S vmlinux.lds.h: Move LSM_TABLE into INIT_DATA 2018-10-10 20:40:21 -07:00
vmlinux.lds.h vmlinux.lds.h: Fix incomplete .text.exit discards 2018-10-12 08:54:58 +11:00
vmlinux.lds.S ARM: 8757/1: NOMMU: Support PMSAv8 MPU 2018-05-19 11:53:46 +01:00
xscale-cp0.c ARM: make xscale iwmmxt code multiplatform aware 2015-12-01 21:44:24 +01:00