]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/commit
x86/tlb: Move __flush_tlb() out of line
authorThomas Gleixner <tglx@linutronix.de>
Tue, 21 Apr 2020 09:20:32 +0000 (11:20 +0200)
committerBorislav Petkov <bp@suse.de>
Sun, 26 Apr 2020 09:00:05 +0000 (11:00 +0200)
commit2faf153bb7346b7dfc895f916edf93a86297ec0a
tree763c31123cdf2cb76222cc28ffdb6c9df795f377
parent9020d3956317d052cdddd43e55acdd2970344192
x86/tlb: Move __flush_tlb() out of line

cpu_tlbstate is exported because various TLB-related functions need
access to it, but cpu_tlbstate is sensitive information which should
only be accessed by well-contained kernel functions and not be directly
exposed to modules.

As a first step, move __flush_tlb() out of line and hide the native
function. The latter can be static when CONFIG_PARAVIRT is disabled.

Consolidate the namespace while at it and remove the pointless extra
wrapper in the paravirt code.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200421092559.246130908@linutronix.de
arch/x86/include/asm/paravirt.h
arch/x86/include/asm/tlbflush.h
arch/x86/kernel/cpu/mtrr/generic.c
arch/x86/kernel/paravirt.c
arch/x86/mm/mem_encrypt.c
arch/x86/mm/tlb.c
arch/x86/platform/uv/tlb_uv.c