5.4-stable review patch. If anyone has any objections, please let me know.
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From: Lin Yujun linyujun809@huawei.com
commit 06cb31cc761823ef444ba4e1df11347342a6e745 upstream.
commit 7c693f54c873691 ("x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS")
adds the "ibrs " option in Documentation/admin-guide/kernel-parameters.txt but omits it to Documentation/admin-guide/hw-vuln/spectre.rst, add it.
Signed-off-by: Lin Yujun linyujun809@huawei.com Link: https://lore.kernel.org/r/20220830123614.23007-1-linyujun809@huawei.com Signed-off-by: Jonathan Corbet corbet@lwn.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- Documentation/admin-guide/hw-vuln/spectre.rst | 1 + 1 file changed, 1 insertion(+)
--- a/Documentation/admin-guide/hw-vuln/spectre.rst +++ b/Documentation/admin-guide/hw-vuln/spectre.rst @@ -625,6 +625,7 @@ kernel command line. eibrs enhanced IBRS eibrs,retpoline enhanced IBRS + Retpolines eibrs,lfence enhanced IBRS + LFENCE + ibrs use IBRS to protect kernel
Not specifying this option is equivalent to spectre_v2=auto.