diff options
| author | David Hildenbrand <[email protected]> | 2021-11-08 18:31:41 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2021-11-09 10:02:48 -0800 |
| commit | 934fadf438b33f3fe952924702eb3254e1884d2f (patch) | |
| tree | b320bd33f9e42069b4254c29ffd388b984fd1db4 | |
| parent | d452a4894983a94c57fa15eb34dbd88228280936 (diff) | |
x86/xen: print a warning when HVMOP_get_mem_type fails
HVMOP_get_mem_type is not expected to fail, "This call failing is
indication of something going quite wrong and it would be good to know
about this." [1]
Let's add a pr_warn_once().
Link: https://lkml.kernel.org/r/[email protected] [1]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: David Hildenbrand <[email protected]>
Suggested-by: Boris Ostrovsky <[email protected]>
Cc: Baoquan He <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Dave Young <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Juergen Gross <[email protected]>
Cc: "Michael S. Tsirkin" <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Oscar Salvador <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Stefano Stabellini <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Vivek Goyal <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | arch/x86/xen/mmu_hvm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/xen/mmu_hvm.c b/arch/x86/xen/mmu_hvm.c index d1b38c77352b..6ba8826dcdcc 100644 --- a/arch/x86/xen/mmu_hvm.c +++ b/arch/x86/xen/mmu_hvm.c @@ -22,8 +22,10 @@ static int xen_oldmem_pfn_is_ram(unsigned long pfn) .pfn = pfn, }; - if (HYPERVISOR_hvm_op(HVMOP_get_mem_type, &a)) + if (HYPERVISOR_hvm_op(HVMOP_get_mem_type, &a)) { + pr_warn_once("Unexpected HVMOP_get_mem_type failure\n"); return -ENXIO; + } return a.mem_type != HVMMEM_mmio_dm; } #endif |