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KVM: selftests: Add additional equivalents to libnuma APIs in KVM's numaif.h

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Add APIs for all syscalls defined in the kernel's mm/mempolicy.c to match
those that would be provided by linking to libnuma.  Opportunistically use
the recently inroduced KVM_SYSCALL_DEFINE() builders to take care of the
boilerplate, and to fix a flaw where the two existing wrappers would
generate multiple symbols if numaif.h were to be included multiple times.

Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Tested-by: Ackerley Tng <ackerleytng@google.com>
Reviewed-by: Shivank Garg <shivankg@amd.com>
Tested-by: Shivank Garg <shivankg@amd.com>
Link: https://lore.kernel.org/r/20251016172853.52451-9-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson 2025-10-16 10:28:49 -07:00
parent 29dc539d74
commit 2189d78269
2 changed files with 23 additions and 18 deletions
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36
tools/testing/selftests/kvm/include/numaif.h
View File

@ -13,23 +13,29 @@
#ifndef SELFTEST_KVM_NUMAIF_H
#define SELFTEST_KVM_NUMAIF_H
#define __NR_get_mempolicy 239
#define __NR_migrate_pages 256
#include <linux/mempolicy.h>
/* System calls */
long get_mempolicy(int *policy, const unsigned long *nmask,
unsigned long maxnode, void *addr, int flags)
{
return syscall(__NR_get_mempolicy, policy, nmask,
maxnode, addr, flags);
}
#include "kvm_syscalls.h"
long migrate_pages(int pid, unsigned long maxnode,
const unsigned long *frommask,
const unsigned long *tomask)
{
return syscall(__NR_migrate_pages, pid, maxnode, frommask, tomask);
}
KVM_SYSCALL_DEFINE(get_mempolicy, 5, int *, policy, const unsigned long *, nmask,
unsigned long, maxnode, void *, addr, int, flags);
KVM_SYSCALL_DEFINE(set_mempolicy, 3, int, mode, const unsigned long *, nmask,
unsigned long, maxnode);
KVM_SYSCALL_DEFINE(set_mempolicy_home_node, 4, unsigned long, start,
unsigned long, len, unsigned long, home_node,
unsigned long, flags);
KVM_SYSCALL_DEFINE(migrate_pages, 4, int, pid, unsigned long, maxnode,
const unsigned long *, frommask, const unsigned long *, tomask);
KVM_SYSCALL_DEFINE(move_pages, 6, int, pid, unsigned long, count, void *, pages,
const int *, nodes, int *, status, int, flags);
KVM_SYSCALL_DEFINE(mbind, 6, void *, addr, unsigned long, size, int, mode,
const unsigned long *, nodemask, unsigned long, maxnode,
unsigned int, flags);
/* Policies */
#define MPOL_DEFAULT 0

5
tools/testing/selftests/kvm/x86/xapic_ipi_test.c
View File

@ -256,7 +256,7 @@ void do_migrations(struct test_data_page *data, int run_secs, int delay_usecs,
int nodes = 0;
time_t start_time, last_update, now;
time_t interval_secs = 1;
int i, r;
int i;
int from, to;
unsigned long bit;
uint64_t hlt_count;
@ -267,9 +267,8 @@ void do_migrations(struct test_data_page *data, int run_secs, int delay_usecs,
delay_usecs);
/* Get set of first 64 numa nodes available */
r = get_mempolicy(NULL, &nodemask, sizeof(nodemask) * 8,
kvm_get_mempolicy(NULL, &nodemask, sizeof(nodemask) * 8,
0, MPOL_F_MEMS_ALLOWED);
TEST_ASSERT(r == 0, "get_mempolicy failed errno=%d", errno);
fprintf(stderr, "Numa nodes found amongst first %lu possible nodes "
"(each 1-bit indicates node is present): %#lx\n",