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Nathan Huckleberry ef65ee90eb riscv/atomic: Fix sign extension for RV64I 
[ Upstream commit 6c58f25e6938c073198af8b1e1832f83f8f0df33 ]

The argument passed to cmpxchg is not guaranteed to be sign
extended, but lr.w sign extends on RV64I. This makes cmpxchg
fail on clang built kernels when __old is negative.

To fix this, we just cast __old to long which sign extends on
RV64I. With this fix, clang built RISC-V kernels now boot.

Link: https://github.com/ClangBuiltLinux/linux/issues/867
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2021-03-16 16:31:04 +08:00
Documentation dt-bindings: display: mediatek: control dpi pins mode to avoid leakage 2021-03-16 16:29:24 +08:00
LICENSES Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
arch riscv/atomic: Fix sign extension for RV64I 2021-03-16 16:31:04 +08:00
block block/bio-integrity: don't free 'buf' if bio_integrity_add_page() failed 2021-03-16 16:30:45 +08:00
certs Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
crypto crypto: algboss - don't wait during notifier callback 2021-03-16 16:30:43 +08:00
drivers drm/amd/display: Use kfree() to free rgb_user in calculate_user_regamma_ramp() 2021-03-16 16:31:03 +08:00
fs afs: Fix storage of cell names 2021-03-16 16:31:03 +08:00
include net: qed: fix left elements count calculation 2021-03-16 16:31:00 +08:00
init x86: Fix early boot crash on gcc-10, third try 2021-03-16 16:28:02 +08:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2021-03-16 16:27:51 +08:00
kernel sched/core: Fix PI boosting between RT and DEADLINE tasks 2021-03-16 16:31:03 +08:00
lib lib/zlib: remove outdated and incorrect pre-increment optimization 2021-03-16 16:30:30 +08:00
mm mm: call cond_resched() from deferred_init_memmap() 2021-03-16 16:29:40 +08:00
net netfilter: ipset: fix unaligned atomic access 2021-03-16 16:31:02 +08:00
package config/arm64: OPEN CONFIG_PSI and phytium configs 2021-03-16 11:02:59 +08:00
samples bpf, xdp, samples: Fix null pointer dereference in *_user code 2021-03-16 16:30:57 +08:00
scripts scripts: headers_install: Exit with error on config leak 2021-03-16 16:30:23 +08:00
security selinux: fix double free 2021-03-16 16:30:40 +08:00
sound ASoC: rockchip: Fix a reference count leak. 2021-03-16 16:30:59 +08:00
tools selftests/net: report etf errors correctly 2021-03-16 16:30:59 +08:00
usr Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
virt KVM: arm64: Save the host's PtrAuth keys in non-preemptible context 2021-03-16 16:29:14 +08:00
.clang-format Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.cocciconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.get_maintainer.ignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.gitattributes Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.gitignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
COPYING Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
CREDITS Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kbuild Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
MAINTAINERS Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Makefile kbuild: force to build vmlinux if CONFIG_MODVERSION=y 2021-03-16 16:29:50 +08:00
README Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
README.md Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
backport_remove_lists.txt Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tools_key.pub Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00

README.md

Tencent Linux Kernel 4.0