Anton Ivanov 5c2ffce1e9 um: Revert to using stack for pt_regs in signal handling ... Reverts commit b6024b21fe and adjusts default stack sizing to cope with larger size of floating point save registers on the newer Intel CPUs. b6024b21fe replaced storing the register state on the stack with kmalloc-ed storage. That has a number of issues and a panic if that fails. 1. kmalloc/ATOMIC can fail. There was a latent hard crash in all interrupt and fault handling as a result. 2. kmalloc in the interrupt path introduces a considerable performance penalty for networking ~ 14% on iperf. This commit restores uml to a stable state until a better solution is found. Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>		2019-05-07 23:18:28 +02:00
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configs	um: defconfig: Cleanup from old Kconfig options	2017-09-13 22:32:51 +02:00
drivers	Merge branch 'for-linus-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml	2019-03-15 15:07:32 -07:00
include	syscalls: Remove start and number from syscall_set_arguments() args	2019-04-05 09:27:23 -04:00
kernel	treewide: add checks for the return value of memblock_alloc*()	2019-03-12 10:04:02 -07:00
os-Linux	um: Revert to using stack for pt_regs in signal handling	2019-05-07 23:18:28 +02:00
scripts	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
.gitignore	um: tell git to ignore generated files	2010-03-06 11:26:28 -08:00
Kconfig	um: Revert to using stack for pt_regs in signal handling	2019-05-07 23:18:28 +02:00
Kconfig.debug	um: Make GCOV depend on !KCOV	2018-12-27 22:48:19 +01:00
Makefile	um: remove unused filechk_gen_header in Makefile	2018-12-22 00:35:20 +09:00
Makefile-os-Linux	x86, um: get rid of arch/um/os symlink	2008-10-22 22:55:22 -07:00
Makefile-skas	[PATCH] uml makefiles sanitized	2005-09-29 08:46:26 -07:00