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| author |   Balbir Singh <sblbir@amazon.com> | 2021-04-26 22:09:43 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2021-07-28 11:42:24 +0200 |
| commit | 8aacd1eab53ec853c2d29cdc9b64e9dc87d2a519 (patch) | |
| tree | fb6af7af5895181f1b67f4646a02771684e77f3c /arch/x86/include/asm/thread_info.h | |
| parent | sched: Add task_work callback for paranoid L1D flush (diff) | |
| download | linux-dev-8aacd1eab53ec853c2d29cdc9b64e9dc87d2a519.tar.xz linux-dev-8aacd1eab53ec853c2d29cdc9b64e9dc87d2a519.zip | |
x86/process: Make room for TIF_SPEC_L1D_FLUSH
The upcoming support for paranoid L1D flush in switch_mm() requires that
TIF_SPEC_IB and the new TIF_SPEC_L1D_FLUSH are two consecutive bits in
thread_info::flags.
Move TIF_SPEC_FORCE_UPDATE to a spare bit to make room for the new one.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Balbir Singh <sblbir@amazon.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210108121056.21940-1-sblbir@amazon.com
Diffstat (limited to 'arch/x86/include/asm/thread_info.h')
| -rw-r--r-- | arch/x86/include/asm/thread_info.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h index de406d93b515..d9afd354549c 100644 --- a/arch/x86/include/asm/thread_info.h +++ b/arch/x86/include/asm/thread_info.h @@ -81,7 +81,6 @@ struct thread_info { #define TIF_SINGLESTEP 4 /* reenable singlestep on user return*/ #define TIF_SSBD 5 /* Speculative store bypass disable */ #define TIF_SPEC_IB 9 /* Indirect branch speculation mitigation */ -#define TIF_SPEC_FORCE_UPDATE 10 /* Force speculation MSR update in context switch */ #define TIF_USER_RETURN_NOTIFY 11 /* notify kernel of userspace return */ #define TIF_UPROBE 12 /* breakpointed or singlestepping */ #define TIF_PATCH_PENDING 13 /* pending live patching update */ @@ -93,6 +92,7 @@ struct thread_info { #define TIF_MEMDIE 20 /* is terminating due to OOM killer */ #define TIF_POLLING_NRFLAG 21 /* idle is polling for TIF_NEED_RESCHED */ #define TIF_IO_BITMAP 22 /* uses I/O bitmap */ +#define TIF_SPEC_FORCE_UPDATE 23 /* Force speculation MSR update in context switch */ #define TIF_FORCED_TF 24 /* true if TF in eflags artificially */ #define TIF_BLOCKSTEP 25 /* set when we want DEBUGCTLMSR_BTF */ #define TIF_LAZY_MMU_UPDATES 27 /* task is updating the mmu lazily */ @@ -104,7 +104,6 @@ struct thread_info { #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) #define _TIF_SSBD (1 << TIF_SSBD) #define _TIF_SPEC_IB (1 << TIF_SPEC_IB) -#define _TIF_SPEC_FORCE_UPDATE (1 << TIF_SPEC_FORCE_UPDATE) #define _TIF_USER_RETURN_NOTIFY (1 << TIF_USER_RETURN_NOTIFY) #define _TIF_UPROBE (1 << TIF_UPROBE) #define _TIF_PATCH_PENDING (1 << TIF_PATCH_PENDING) @@ -115,6 +114,7 @@ struct thread_info { #define _TIF_SLD (1 << TIF_SLD) #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) #define _TIF_IO_BITMAP (1 << TIF_IO_BITMAP) +#define _TIF_SPEC_FORCE_UPDATE (1 << TIF_SPEC_FORCE_UPDATE) #define _TIF_FORCED_TF (1 << TIF_FORCED_TF) #define _TIF_BLOCKSTEP (1 << TIF_BLOCKSTEP) #define _TIF_LAZY_MMU_UPDATES (1 << TIF_LAZY_MMU_UPDATES) |