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Linux kernel mirror (for testing)
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kernel
os
linux
selftests/powerpc: Skip PROT_SAO test in guests/LPARS
In commit 9b725a90a8f1 ("powerpc/64s: Disallow PROT_SAO in LPARs by
default") PROT_SAO was disabled in guests/LPARs by default. So skip
the test if we are running in a guest to avoid a spurious failure.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200901124653.523182-1-mpe@ellerman.id.au
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tools/testing/selftests/powerpc/mm/prot_sao.c
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tools/testing/selftests/powerpc/mm/prot_sao.c
···
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <asm/cputable.h>
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···
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{
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char *p;
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-
/* SAO was introduced in 2.06 and removed in 3.1 */
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/*
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* SAO was introduced in 2.06 and removed in 3.1. It's disabled in
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* guests/LPARs by default, so also skip if we are running in a guest.
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*/
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SKIP_IF(!have_hwcap(PPC_FEATURE_ARCH_2_06) ||
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have_hwcap2(PPC_FEATURE2_ARCH_3_1));
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have_hwcap2(PPC_FEATURE2_ARCH_3_1) ||
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access("/proc/device-tree/rtas/ibm,hypertas-functions", F_OK) == 0);
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/*
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* Ensure we can ask for PROT_SAO.