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Fix TDX MMIO #VE fault handling, and add two new Intel model numbers

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for "Pantherlake" and "Diamond Rapids".
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2024-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Fix TDX MMIO #VE fault handling, and add two new Intel model numbers
  for 'Pantherlake' and 'Diamond Rapids'"

* tag 'x86-urgent-2024-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Add two Intel CPU model numbers
  x86/tdx: Fix "in-kernel MMIO" check
This commit is contained in:
Linus Torvalds 2024-09-29 09:10:00 -07:00
commit d37421e655
2 changed files with 11 additions and 0 deletions
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6
arch/x86/coco/tdx/tdx.c
View file

@ -16,6 +16,7 @@
#include <asm/insn-eval.h>
#include <asm/pgtable.h>
#include <asm/set_memory.h>
#include <asm/traps.h>
/* MMIO direction */
#define EPT_READ 0
@ -433,6 +434,11 @@ static int handle_mmio(struct pt_regs *regs, struct ve_info *ve)
return -EINVAL;
}
if (!fault_in_kernel_space(ve->gla)) {
WARN_ONCE(1, "Access to userspace address is not supported");
return -EINVAL;
}
/*
* Reject EPT violation #VEs that split pages.
*

5
arch/x86/include/asm/intel-family.h
View file

@ -135,6 +135,8 @@
#define INTEL_LUNARLAKE_M IFM(6, 0xBD)
#define INTEL_PANTHERLAKE_L IFM(6, 0xCC)
/* "Small Core" Processors (Atom/E-Core) */
#define INTEL_ATOM_BONNELL IFM(6, 0x1C) /* Diamondville, Pineview */
@ -178,4 +180,7 @@
#define INTEL_FAM5_QUARK_X1000 0x09 /* Quark X1000 SoC */
#define INTEL_QUARK_X1000 IFM(5, 0x09) /* Quark X1000 SoC */
/* Family 19 */
#define INTEL_PANTHERCOVE_X IFM(19, 0x01) /* Diamond Rapids */
#endif /* _ASM_X86_INTEL_FAMILY_H */