diff options
| author | Nuno Das Neves <nunodasneves@linux.microsoft.com> | 2025-03-14 12:28:47 -0700 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2025-03-20 21:23:03 +0000 |
| commit | 3817854ba892016ddb03ee31208e9f8e440f5bee (patch) | |
| tree | 308365b2d660be2bdf451c0f822aed9884c24d76 /include/asm-generic | |
| parent | e792d843aa3c9d039074cdce728d5803262e57a7 (diff) | |
hyperv: Log hypercall status codes as strings
Introduce hv_status_printk() macros as a convenience to log hypercall
errors, formatting them with the status code (HV_STATUS_*) as a raw hex
value and also as a string, which saves some time while debugging.
Create a table of HV_STATUS_ codes with strings and mapped errnos, and
use it for hv_result_to_string() and hv_result_to_errno().
Use the new hv_status_printk()s in hv_proc.c, hyperv-iommu.c, and
irqdomain.c hypercalls to aid debugging in the root partition.
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Reviewed-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Link: https://lore.kernel.org/r/1741980536-3865-2-git-send-email-nunodasneves@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1741980536-3865-2-git-send-email-nunodasneves@linux.microsoft.com>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/mshyperv.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index b13b0cda4ac8..250c65236919 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -298,6 +298,19 @@ static inline int cpumask_to_vpset_skip(struct hv_vpset *vpset, return __cpumask_to_vpset(vpset, cpus, func); } +#define _hv_status_fmt(fmt) "%s: Hyper-V status: %#x = %s: " fmt +#define hv_status_printk(level, status, fmt, ...) \ +do { \ + u64 __status = (status); \ + pr_##level(_hv_status_fmt(fmt), __func__, hv_result(__status), \ + hv_result_to_string(__status), ##__VA_ARGS__); \ +} while (0) +#define hv_status_err(status, fmt, ...) \ + hv_status_printk(err, status, fmt, ##__VA_ARGS__) +#define hv_status_debug(status, fmt, ...) \ + hv_status_printk(debug, status, fmt, ##__VA_ARGS__) + +const char *hv_result_to_string(u64 hv_status); int hv_result_to_errno(u64 status); void hyperv_report_panic(struct pt_regs *regs, long err, bool in_die); bool hv_is_hyperv_initialized(void); |