Hi,
Err.. this is a work-in-progress version of patch #2 ("KVM/arm64: Print
emulated register table name when it is unsorted"). I sent it by mistake
because I forgot to clean the patch directory before sending the series.
I'll resend the series without this patch.
Thanks,
Alex
On Mon, Apr 25, 2022 at 05:39:04PM +0100, Alexandru Elisei wrote:
> When a sysreg table entry is out-of-order, KVM attempts to print the
> address of the table:
>
> [ 0.143881] kvm [1]: sys_reg table (____ptrval____) out of order (0)
>
> Printing the name of the table instead of a pointer is more helpful in this
> case:
>
> [ 0.143881] kvm [1]: sys_reg table sys_reg_descs out of order (0)
>
> Signed-off-by: Alexandru Elisei <alexandru.elisei@xxxxxxx>
> ---
> arch/arm64/kvm/sys_regs.c | 20 +++++++++++---------
> 1 file changed, 11 insertions(+), 9 deletions(-)
>
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index 57302048afd0..7b62a2daf056 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -2188,18 +2188,18 @@ static const struct sys_reg_desc cp15_64_regs[] = {
> };
>
> static bool check_sysreg_table(const struct sys_reg_desc *table, unsigned int n,
> - bool is_32)
> + const char *table_name, bool is_32)
> {
> unsigned int i;
>
> for (i = 0; i < n; i++) {
> if (!is_32 && table[i].reg && !table[i].reset) {
> - kvm_err("sys_reg table %p entry %d lacks reset\n", table, i);
> + kvm_err("sys_reg table %s entry %d lacks reset\n", table_name, i);
> return false;
> }
>
> if (i && cmp_sys_reg(&table[i-1], &table[i]) >= 0) {
> - kvm_err("sys_reg table %p out of order (%d)\n", table, i - 1);
> + kvm_err("sys_reg table %s out of order (%d)\n", table_name, i - 1);
> return false;
> }
> }
> @@ -2866,12 +2866,14 @@ int kvm_sys_reg_table_init(void)
> struct sys_reg_desc clidr;
>
> /* Make sure tables are unique and in order. */
> - valid &= check_sysreg_table(sys_reg_descs, ARRAY_SIZE(sys_reg_descs), false);
> - valid &= check_sysreg_table(cp14_regs, ARRAY_SIZE(cp14_regs), true);
> - valid &= check_sysreg_table(cp14_64_regs, ARRAY_SIZE(cp14_64_regs), true);
> - valid &= check_sysreg_table(cp15_regs, ARRAY_SIZE(cp15_regs), true);
> - valid &= check_sysreg_table(cp15_64_regs, ARRAY_SIZE(cp15_64_regs), true);
> - valid &= check_sysreg_table(invariant_sys_regs, ARRAY_SIZE(invariant_sys_regs), false);
> + valid &= check_sysreg_table(sys_reg_descs, ARRAY_SIZE(sys_reg_descs),
> + "sys_reg_descs", false);
> + valid &= check_sysreg_table(cp14_regs, ARRAY_SIZE(cp14_regs), "cp14_regs", true);
> + valid &= check_sysreg_table(cp14_64_regs, ARRAY_SIZE(cp14_64_regs), "cp14_64_regs", true);
> + valid &= check_sysreg_table(cp15_regs, ARRAY_SIZE(cp15_regs), "cp15_regs", true);
> + valid &= check_sysreg_table(cp15_64_regs, ARRAY_SIZE(cp15_64_regs), "cp15_64_regs", true);
> + valid &= check_sysreg_table(invariant_sys_regs, ARRAY_SIZE(invariant_sys_regs),
> + "invariant_sys_regs", false);
>
> if (!valid)
> return -EINVAL;
> --
> 2.36.0
>
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