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arm64 fixes for -rc8

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- Fix build breakage due to circular headers
 
 - Fix build regression when using Clang's integrated assembler
 
 - Fix IPv4 header checksum code to deal with invalid length field
 
 - Fix broken path for Arm PMU entry in MAINTAINERS
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "The main one is to fix the build after Willy's per-cpu entropy changes
  this week. Although that was already resolved elsewhere, the arm64 fix
  here is useful cleanup anyway.

  Other than that, we've got a fix for building with Clang's integrated
  assembler and a fix to make our IPv4 checksumming robust against
  invalid header lengths (this only seems to be triggerable by injected
  errors).

   - Fix build breakage due to circular headers

   - Fix build regression when using Clang's integrated assembler

   - Fix IPv4 header checksum code to deal with invalid length field

   - Fix broken path for Arm PMU entry in MAINTAINERS"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  MAINTAINERS: Include drivers subdirs for ARM PMU PROFILING AND DEBUGGING entry
  arm64: csum: Fix handling of bad packets
  arm64: Drop unnecessary include from asm/smp.h
  arm64/alternatives: move length validation inside the subsection
This commit is contained in:
Linus Torvalds 2020-07-31 09:36:03 -07:00
commit 14aab7eeb9
4 changed files with 6 additions and 6 deletions
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2
MAINTAINERS
View File

@ -1425,7 +1425,7 @@ F: arch/arm*/include/asm/perf_event.h
F: arch/arm*/kernel/hw_breakpoint.c
F: arch/arm*/kernel/perf_*
F: arch/arm/oprofile/common.c
F: drivers/perf/*
F: drivers/perf/
F: include/linux/perf/arm_pmu.h
ARM PORT

4
arch/arm64/include/asm/alternative.h
View File

@ -77,9 +77,9 @@ static inline void apply_alternatives_module(void *start, size_t length) { }
"663:\n\t" \
newinstr "\n" \
"664:\n\t" \
".previous\n\t" \
".org . - (664b-663b) + (662b-661b)\n\t" \
".org . - (662b-661b) + (664b-663b)\n" \
".org . - (662b-661b) + (664b-663b)\n\t" \
".previous\n" \
".endif\n"
#define __ALTERNATIVE_CFG_CB(oldinstr, feature, cfg_enabled, cb) \

5
arch/arm64/include/asm/checksum.h
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@ -24,16 +24,17 @@ static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
{
__uint128_t tmp;
u64 sum;
int n = ihl; /* we want it signed */
tmp = *(const __uint128_t *)iph;
iph += 16;
ihl -= 4;
n -= 4;
tmp += ((tmp >> 64) | (tmp << 64));
sum = tmp >> 64;
do {
sum += *(const u32 *)iph;
iph += 4;
} while (--ihl);
} while (--n > 0);
sum += ((sum >> 32) | (sum << 32));
return csum_fold((__force u32)(sum >> 32));

1
arch/arm64/include/asm/smp.h
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@ -30,7 +30,6 @@
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/thread_info.h>
#include <asm/pointer_auth.h>
DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number);