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x86/virt/tdx: Move TDX global initialization states to file scope

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TDX module global initialization is executed only once. The first call
caches both the result and the "done" state, and later callers reuse the
saved result. A lock protects that cached states.

Those states and the lock are currently kept as function-local statics
because they are used only by try_init_module_global().

TDX module updates need to reset the cached states so TDX global
initialization can be run again after an update. That will add another
access site in the same file.

Move the cached states to file scope so it is accessible outside
try_init_module_global(), and move the lock along with the states it
protects.

No functional change intended.

Signed-off-by: Chao Gao <chao.gao@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://patch.msgid.link/20260520133909.409394-3-chao.gao@intel.com
This commit is contained in:
Chao Gao 2026-05-20 15:28:47 -07:00 committed by Dave Hansen
parent 1ffa6a1025
commit 9c0c68708d
1 changed files with 4 additions and 3 deletions
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7
arch/x86/virt/vmx/tdx/tdx.c
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@ -105,6 +105,10 @@ static __always_inline int sc_retry_prerr(sc_func_t func,
#define seamcall_prerr_ret(__fn, __args) \
sc_retry_prerr(__seamcall_ret, seamcall_err_ret, (__fn), (__args))
static DEFINE_RAW_SPINLOCK(sysinit_lock);
static bool sysinit_done;
static int sysinit_ret;
/*
* Do the module global initialization once and return its result.
* It can be done on any cpu, and from task or IRQ context.
@ -112,9 +116,6 @@ static __always_inline int sc_retry_prerr(sc_func_t func,
static int try_init_module_global(void)
{
struct tdx_module_args args = {};
static DEFINE_RAW_SPINLOCK(sysinit_lock);
static bool sysinit_done;
static int sysinit_ret;
int ret;
raw_spin_lock(&sysinit_lock);