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| author |   Daniel Axtens <dja@axtens.net> | 2022-05-18 20:07:05 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2022-05-22 15:58:29 +1000 |
| commit | 2ab2d5794f14c08676690bf0859f16cc768bb3a4 (patch) | |
| tree | bb031beb53e4a333737ff46270946af6c5e67751 /arch/powerpc/sysdev | |
| parent | powerpc/kasan: Don't instrument non-maskable or raw interrupts (diff) | |
| download | linux-dev-2ab2d5794f14c08676690bf0859f16cc768bb3a4.tar.xz linux-dev-2ab2d5794f14c08676690bf0859f16cc768bb3a4.zip | |
powerpc/kasan: Disable address sanitization in kexec paths
The kexec code paths involve code that necessarily run in real mode, as
CPUs are disabled and control is transferred to the new kernel. Disable
address sanitization for the kexec code and the functions called in real
mode on CPUs being disabled.
[paulus@ozlabs.org: combined a few work-in-progress commits of
Daniel's and wrote the commit message.]
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
[mpe: Move pseries_machine_kexec() into kexec.c so setup.c can be instrumented]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/YoTFSQ2TUSEaDdVC@cleo
Diffstat (limited to 'arch/powerpc/sysdev')
| -rw-r--r-- | arch/powerpc/sysdev/xics/xics-common.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/xive/common.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c index ce76f9759952..d3a4156e8788 100644 --- a/arch/powerpc/sysdev/xics/xics-common.c +++ b/arch/powerpc/sysdev/xics/xics-common.c @@ -146,7 +146,7 @@ void __init xics_smp_probe(void) #endif /* CONFIG_SMP */ -void xics_teardown_cpu(void) +noinstr void xics_teardown_cpu(void) { struct xics_cppr *os_cppr = this_cpu_ptr(&xics_cppr); @@ -159,7 +159,7 @@ void xics_teardown_cpu(void) icp_ops->teardown_cpu(); } -void xics_kexec_teardown_cpu(int secondary) +noinstr void xics_kexec_teardown_cpu(int secondary) { xics_teardown_cpu(); diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c index e06d015ad1a0..61b9f98dfd4a 100644 --- a/arch/powerpc/sysdev/xive/common.c +++ b/arch/powerpc/sysdev/xive/common.c @@ -1241,7 +1241,7 @@ static int xive_setup_cpu_ipi(unsigned int cpu) return 0; } -static void xive_cleanup_cpu_ipi(unsigned int cpu, struct xive_cpu *xc) +noinstr static void xive_cleanup_cpu_ipi(unsigned int cpu, struct xive_cpu *xc) { unsigned int xive_ipi_irq = xive_ipi_cpu_to_irq(cpu); @@ -1634,7 +1634,7 @@ void xive_flush_interrupt(void) #endif /* CONFIG_SMP */ -void xive_teardown_cpu(void) +noinstr void xive_teardown_cpu(void) { struct xive_cpu *xc = __this_cpu_read(xive_cpu); unsigned int cpu = smp_processor_id(); |