Joerg Roedel a2bab396cb x86/sev-es: Use __copy_from_user_inatomic() ... commit bffe30dd9f1f3b2608a87ac909a224d6be472485 upstream. The #VC handler must run in atomic context and cannot sleep. This is a problem when it tries to fetch instruction bytes from user-space via copy_from_user(). Introduce a insn_fetch_from_user_inatomic() helper which uses __copy_from_user_inatomic() to safely copy the instruction bytes to kernel memory in the #VC handler. Fixes: 5e3427a7bc ("x86/sev-es: Handle instruction fetches from user-space") Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: stable@vger.kernel.org # v5.10+ Link: https://lkml.kernel.org/r/20210303141716.29223-6-joro@8bytes.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-03-17 17:06:36 +01:00
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asm	x86/sev-es: Use __copy_from_user_inatomic()	2021-03-17 17:06:36 +01:00
uapi/asm	x86/kvm: Reserve KVM_FEATURE_MSI_EXT_DEST_ID	2020-10-28 13:52:05 -04:00