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x86/cpu: Clarify the error message when BIOS does not support SGX

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When SGX is not supported by the BIOS, the kernel log contains the error
'SGX disabled by BIOS', which can be confusing since there might not be an
SGX-related option in the BIOS settings.

For the kernel it's difficult to distinguish between the BIOS not
supporting SGX and the BIOS supporting SGX but having it disabled.

Therefore, update the error message to 'SGX disabled or unsupported by
BIOS' to make it easier for those reading kernel logs to understand what's
happening.

Reported-by: Bo Wu <wubo@uniontech.com>
Co-developed-by: Zelong Xiang <xiangzelong@uniontech.com>
Signed-off-by: Zelong Xiang <xiangzelong@uniontech.com>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Kai Huang <kai.huang@intel.com>
Link: https://lore.kernel.org/all/F8D977CB368423F3+20240825104653.1294624-1-wangyuli@uniontech.com
Closes: https://github.com/linuxdeepin/developer-center/issues/10032
This commit is contained in:
WangYuli 2024-08-25 18:46:53 +08:00 committed by Thomas Gleixner
parent ea49cdb26e
commit 7678a53a16
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/cpu/feat_ctl.c
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@ -188,7 +188,7 @@ update_caps:
update_sgx: update_sgx:
if (!(msr & FEAT_CTL_SGX_ENABLED)) { if (!(msr & FEAT_CTL_SGX_ENABLED)) {
if (enable_sgx_kvm || enable_sgx_driver) if (enable_sgx_kvm || enable_sgx_driver)
pr_err_once("SGX disabled by BIOS.\n"); pr_err_once("SGX disabled or unsupported by BIOS.\n");
clear_cpu_cap(c, X86_FEATURE_SGX); clear_cpu_cap(c, X86_FEATURE_SGX);
return; return;
} }