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selftests/powerpc: Skip PROT_SAO test in guests/LPARS

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In commit 9b725a90a8 ("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
This commit is contained in:
Michael Ellerman 2020-09-01 22:45:17 +10:00
parent 103a8542cb
commit fc1f178cdb
1 changed files with 7 additions and 2 deletions
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9
tools/testing/selftests/powerpc/mm/prot_sao.c
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@ -7,6 +7,7 @@
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <unistd.h>
#include <asm/cputable.h>
@ -18,9 +19,13 @@ int test_prot_sao(void)
{
char *p;
/* SAO was introduced in 2.06 and removed in 3.1 */
/*
* SAO was introduced in 2.06 and removed in 3.1. It's disabled in
* guests/LPARs by default, so also skip if we are running in a guest.
*/
SKIP_IF(!have_hwcap(PPC_FEATURE_ARCH_2_06) ||
have_hwcap2(PPC_FEATURE2_ARCH_3_1));
have_hwcap2(PPC_FEATURE2_ARCH_3_1) ||
access("/proc/device-tree/rtas/ibm,hypertas-functions", F_OK) == 0);
/*
* Ensure we can ask for PROT_SAO.