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RISC-V Fixes for 6.0-rc2

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* A fix to make the ISA extension static keys writable after init.  This
   manifests at least as a crash when loading modules (including KVM).
 * A fixup for a build warning related to a poorly formed comment in our
   perf driver.
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Merge tag 'riscv-for-linus-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix to make the ISA extension static keys writable after init. This
   manifests at least as a crash when loading modules (including KVM).

 - A fixup for a build warning related to a poorly formed comment in our
   perf driver.

* tag 'riscv-for-linus-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  perf: riscv legacy: fix kerneldoc comment warning
  riscv: Ensure isa-ext static keys are writable
This commit is contained in:
Linus Torvalds 2022-08-19 13:49:07 -07:00
parent ca052cfd6e 96264230a6
commit 8fd00059cc
2 changed files with 2 additions and 2 deletions
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2
arch/riscv/kernel/cpufeature.c
View file

@ -28,7 +28,7 @@ unsigned long elf_hwcap __read_mostly;
/* Host ISA bitmap */
static DECLARE_BITMAP(riscv_isa, RISCV_ISA_EXT_MAX) __read_mostly;
__ro_after_init DEFINE_STATIC_KEY_ARRAY_FALSE(riscv_isa_ext_keys, RISCV_ISA_EXT_KEY_MAX);
DEFINE_STATIC_KEY_ARRAY_FALSE(riscv_isa_ext_keys, RISCV_ISA_EXT_KEY_MAX);
EXPORT_SYMBOL(riscv_isa_ext_keys);
/**

2
drivers/perf/riscv_pmu_legacy.c
View file

@ -72,7 +72,7 @@ static void pmu_legacy_ctr_start(struct perf_event *event, u64 ival)
local64_set(&hwc->prev_count, initial_val);
}
/**
/*
* This is just a simple implementation to allow legacy implementations
* compatible with new RISC-V PMU driver framework.
* This driver only allows reading two counters i.e CYCLE & INSTRET.