From: Peter Zijlstra <peterz@infradead.org>
To: linux-kernel@vger.kernel.org
Cc: x86@kernel.org, Linus Torvalds <torvalds@linux-foundation.org>,
Andy Lutomirsky <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Dave Hansen <dave.hansen@intel.com>,
Borislav Petkov <bpetkov@suse.de>,
Greg KH <gregkh@linuxfoundation.org>,
keescook@google.com, hughd@google.com,
Brian Gerst <brgerst@gmail.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Denys Vlasenko <dvlasenk@redhat.com>,
Rik van Riel <riel@redhat.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Juergen Gross <jgross@suse.com>,
David Laight <David.Laight@aculab.com>,
Eduardo Valentin <eduval@amazon.com>,
aliguori@amazon.com, Will Deacon <will.deacon@arm.com>,
daniel.gruss@iaik.tugraz.at,
Dave Hansen <dave.hansen@linux.intel.com>,
Ingo Molnar <mingo@kernel.org>,
moritz.lipp@iaik.tugraz.at, linux-mm@kvack.org,
Borislav Petkov <bp@alien8.de>,
michael.schwarz@iaik.tugraz.at,
richard.fellner@student.tugraz.at
Subject: [PATCH 4/9] x86/mm: Use __flush_tlb_one() for kernel memory
Date: Tue, 05 Dec 2017 13:34:49 +0100 [thread overview]
Message-ID: <20171205123820.085253494@infradead.org> (raw)
In-Reply-To: <20171205123444.990868007@infradead.org>
[-- Attachment #1: peterz-tlb-flush_kernel_range.patch --]
[-- Type: text/plain, Size: 825 bytes --]
__flush_tlb_single() is for user mappings, __flush_tlb_one() for
kernel mappings.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/mm/tlb.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -605,9 +605,7 @@ static void do_kernel_range_flush(void *
/* flush range by one by one 'invlpg' */
for (addr = f->start; addr < f->end; addr += PAGE_SIZE)
- __flush_tlb_single(addr);
-
- invalidate_pcid_other();
+ __flush_tlb_one(addr);
}
void flush_tlb_kernel_range(unsigned long start, unsigned long end)
--
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next prev parent reply other threads:[~2017-12-05 12:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-05 12:34 [PATCH 0/9] Clarify/cleanup/fix tlbflush API/usage Peter Zijlstra
2017-12-05 12:34 ` [PATCH 1/9] x86/mm: Remove superfluous barriers Peter Zijlstra
2017-12-05 12:34 ` [PATCH 2/9] x86/mm: Create asm/invpcid.h Peter Zijlstra
2017-12-05 12:34 ` [PATCH 3/9] x86/mm: Address feedback Peter Zijlstra
2017-12-05 12:34 ` Peter Zijlstra [this message]
2017-12-05 12:34 ` [PATCH 5/9] x86/uv: Use the right tlbflush API Peter Zijlstra
2017-12-05 21:09 ` Andrew Banman
2017-12-05 21:27 ` Peter Zijlstra
2017-12-05 23:04 ` Andrew Banman
2017-12-05 12:34 ` [PATCH 6/9] x86/microcode: Dont abuse the tlbflush interface Peter Zijlstra
2017-12-05 12:34 ` [PATCH 7/9] x86/mm: Clarify which functions are supposed to flush what Peter Zijlstra
2017-12-05 12:34 ` [PATCH 8/9] x86/mm: Clarify the whole ASID/kernel PCID/user PCID naming Peter Zijlstra
2017-12-05 12:34 ` [PATCH 9/9] x86/doc: Remove obvious weirdness Peter Zijlstra
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