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authorMarc Zyngier <marc.zyngier@arm.com>2018-03-26 11:51:43 +0100
committerMarc Zyngier <marc.zyngier@arm.com>2018-04-17 12:56:36 +0100
commit165d102905691891f85cb90736c25150b7b25d29 (patch)
tree67e0b73607342024c4549ebcb512b440ee752551
parent6522404f1a5780685cf2b3ab7fd811126ea07ba2 (diff)
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arm64: KVM: Demote SVE and LORegion warnings to debug only
While generating a message about guests probing for SVE/LORegions is a useful debugging tool, considering it an error is slightly over the top, as this is the only way the guest can find out about the presence of the feature. Let's turn these message into kvm_debug so that they can only be seen if CONFIG_DYNAMIC_DEBUG, and kept quiet otherwise. Acked-by: Christoffer Dall <christoffer.dall@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
-rw-r--r--arch/arm64/kvm/sys_regs.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 806b0b126a64..6e3b969391fd 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -996,14 +996,12 @@ static u64 read_id_reg(struct sys_reg_desc const *r, bool raz)
if (id == SYS_ID_AA64PFR0_EL1) {
if (val & (0xfUL << ID_AA64PFR0_SVE_SHIFT))
- pr_err_once("kvm [%i]: SVE unsupported for guests, suppressing\n",
- task_pid_nr(current));
+ kvm_debug("SVE unsupported for guests, suppressing\n");
val &= ~(0xfUL << ID_AA64PFR0_SVE_SHIFT);
} else if (id == SYS_ID_AA64MMFR1_EL1) {
if (val & (0xfUL << ID_AA64MMFR1_LOR_SHIFT))
- pr_err_once("kvm [%i]: LORegions unsupported for guests, suppressing\n",
- task_pid_nr(current));
+ kvm_debug("LORegions unsupported for guests, suppressing\n");
val &= ~(0xfUL << ID_AA64MMFR1_LOR_SHIFT);
}