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-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEV76QKkVc4xCGURexaDWVMHDJkrAFAmfsa8QACgkQaDWVMHDJ krBCAhAAodPYiIEy+qpad1Q8HPhaKYUJ5jzkIdt1GYXCBf2dfY6Zj8w7edSApUhA 7og9gK8ku8hwpf6oCGmp2Lm74FgATIj7q0ac07XBW3OsrfFQc73DfPJn6WMDYjRV ec9baSzX5GcqUyezq7woyJayZT9LRLBexF/vk7dAQ7nuecCOUhqLXWBN5eUT0e+K 58kFjZoZZx/4Y9zh7UIxBQyCbL88IeI6rclW5tZJlRHNuD7B64x606ETwQJKK9GK YHPhqRKtjJRzSOn/xGYT4AQDPbF9u14Q4WGVO+bvgv8Z6BtmiYV2fG0q5GU14h0z +gwjja3Edo+F6zSIIZonQbrSVHspwm1IPJQQZHljhFOEt7Ezu3hLIYouUWVlNRgl mRzubZBmhQUfJOAtfGmHktdg6j+QinYDQr+/CjoXoeh8EknL+KtqamXJnyb8KAMN qH6X+N2coaCcl334zW44m6YTmTipdIhmHFj6edYwqdR3Ux6DDaX9PKopIIpiZEcb GH1o++4JMp9OBIaTu0Yp1WgWJ+EyUSWDJbydqCMOdthuESqKW45IQkLhPxZpIhB4 5Wra4Ot7AdsThyPqNPaEu3ND+BXu4tAAa8r8GK+AP7DqRxXz/bbWTHqNepm9wSvP pnOlLyVTri/difMWWsJJPK6QRYbNnemrny3Do3PbIZVKS08vgLs= =XvoD -----END PGP SIGNATURE----- Merge tag 'x86_tdx_for_6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 TDX updates from Dave Hansen: "Avoid direct HLT instruction execution in TDX guests. TDX guests aren't expected to use the HLT instruction directly. It causes a virtualization exception (#VE). While the #VE _can_ be handled, the current handling is slow and buggy and the easiest thing is just to avoid HLT in the first place. Plus, the kernel already has paravirt infrastructure that makes it relatively painless. Make TDX guests require paravirt and add some TDX-specific paravirt handlers which avoid HLT in the normal halt routines. Also add a warning in case another HLT sneaks in. There was a report that this leads to a "major performance improvement" on specjbb2015, probably because of the extra #VE overhead or missed wakeups from the buggy HLT handling" * tag 'x86_tdx_for_6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/tdx: Emit warning if IRQs are enabled during HLT #VE handling x86/tdx: Fix arch_safe_halt() execution for TDX VMs x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT