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linux/arch/x86/include/uapi/asm
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Andy Lutomirski 8ece53ef7f x86/vm86/32: Remove VM86_SCREEN_BITMAP support 
The implementation was rather buggy.  It unconditionally marked PTEs
read-only, even for VM_SHARED mappings.  I'm not sure whether this is
actually a problem, but it certainly seems unwise.  More importantly, it
released the mmap lock before flushing the TLB, which could allow a racing
CoW operation to falsely believe that the underlying memory was not
writable.

I can't find any users at all of this mechanism, so just remove it.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Stas Sergeev <stsp2@yandex.ru>
Link: https://lkml.kernel.org/r/f3086de0babcab36f69949b5780bde851f719bc8.1611078018.git.luto@kernel.org
2021-01-21 20:08:53 +01:00
..
a.out.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
auxvec.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
bitsperlong.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
boot.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
bootparam.h x86: bootparam.h: Delete duplicated word 2020-07-26 12:47:22 +02:00
byteorder.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
debugreg.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
e820.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
hw_breakpoint.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
hwcap2.h x86/elf: Enumerate kernel FSGSBASE capability in AT_HWCAP2 2020-06-18 15:47:05 +02:00
ist.h License cleanup: add SPDX license identifier to uapi header files with a license 2017-11-02 11:20:11 +01:00
Kbuild treewide: Add SPDX license identifier - Kbuild 2019-05-30 11:32:33 -07:00
kvm_para.h x86/kvm: Reserve KVM_FEATURE_MSI_EXT_DEST_ID 2020-10-28 13:52:05 -04:00
kvm_perf.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
kvm.h KVM: X86: Implement ring-based dirty memory tracking 2020-11-15 09:49:15 -05:00
ldt.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
mce.h x86/mce: Drop bogus comment about mce.kflags 2020-04-17 11:12:21 +02:00
mman.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
msgbuf.h arch: msgbuf.h: make uapi asm/msgbuf.h self-contained 2019-12-04 19:44:14 -08:00
msr.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
mtrr.h License cleanup: add SPDX license identifier to uapi header files with a license 2017-11-02 11:20:11 +01:00
perf_regs.h perf/x86: Disable extended registers for non-supported PMUs 2019-06-24 19:19:23 +02:00
posix_types_32.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
posix_types_64.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
posix_types_x32.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
posix_types.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
prctl.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
processor-flags.h Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-29 17:02:49 -08:00
ptrace-abi.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
ptrace.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
sembuf.h arch: sembuf.h: make uapi asm/sembuf.h self-contained 2019-12-04 19:44:14 -08:00
setup.h
sgx.h x86/sgx: Fix a typo in kernel-doc markup 2020-12-02 12:54:47 +01:00
shmbuf.h y2038: ipc: remove __kernel_time_t reference from headers 2019-11-15 14:38:28 +01:00
sigcontext32.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
sigcontext.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
siginfo.h signal: Remove the need for __ARCH_SI_PREABLE_SIZE and SI_PAD_SIZE 2018-10-03 16:46:43 +02:00
signal.h arch: move SA_* definitions to generic headers 2020-11-23 10:31:05 -06:00
stat.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
statfs.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
svm.h KVM: SVM: Add support for CR8 write traps for an SEV-ES guest 2020-12-15 05:20:54 -05:00
swab.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
ucontext.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
unistd.h x86/syscalls: Revert "x86/syscalls: Make __X32_SYSCALL_BIT be unsigned long" 2020-05-26 16:42:43 +02:00
vm86.h x86/vm86/32: Remove VM86_SCREEN_BITMAP support 2021-01-21 20:08:53 +01:00
vmx.h KVM: x86: emulate wait-for-SIPI and SIPI-VMExit 2020-11-15 09:49:09 -05:00
vsyscall.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00