[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH 3/6] xen/x86: Refactor xen/lib/x86 so it can be linked in hvmloader
A future patch will use these in hvmloader, which is freestanding, but lacks the Xen code. The following changes fix the compilation errors. * string.h => Remove memset() usages and bzero through assignments * inttypes.h => Use stdint.h (it's what it should've been to begin with) * errno.h => Use xen/errno.h instead No functional change intended. Signed-off-by: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx> --- xen/lib/x86/cpuid.c | 12 ++++++------ xen/lib/x86/private.h | 8 +++++--- 2 files changed, 11 insertions(+), 9 deletions(-) diff --git a/xen/lib/x86/cpuid.c b/xen/lib/x86/cpuid.c index eb7698dc73..4a138c3a11 100644 --- a/xen/lib/x86/cpuid.c +++ b/xen/lib/x86/cpuid.c @@ -5,8 +5,8 @@ static void zero_leaves(struct cpuid_leaf *l, unsigned int first, unsigned int last) { - if ( first <= last ) - memset(&l[first], 0, sizeof(*l) * (last - first + 1)); + for (l = &l[first]; first <= last; first++, l++ ) + *l = (struct cpuid_leaf){}; } unsigned int x86_cpuid_lookup_vendor(uint32_t ebx, uint32_t ecx, uint32_t edx) @@ -244,7 +244,7 @@ void x86_cpu_policy_clear_out_of_range_leaves(struct cpu_policy *p) ARRAY_SIZE(p->basic.raw) - 1); if ( p->basic.max_leaf < 4 ) - memset(p->cache.raw, 0, sizeof(p->cache.raw)); + p->cache = (typeof(p->cache)){}; else { for ( i = 0; (i < ARRAY_SIZE(p->cache.raw) && @@ -255,13 +255,13 @@ void x86_cpu_policy_clear_out_of_range_leaves(struct cpu_policy *p) } if ( p->basic.max_leaf < 7 ) - memset(p->feat.raw, 0, sizeof(p->feat.raw)); + p->feat = (typeof(p->feat)){}; else zero_leaves(p->feat.raw, p->feat.max_subleaf + 1, ARRAY_SIZE(p->feat.raw) - 1); if ( p->basic.max_leaf < 0xb ) - memset(p->topo.raw, 0, sizeof(p->topo.raw)); + p->topo = (typeof(p->topo)){}; else { for ( i = 0; (i < ARRAY_SIZE(p->topo.raw) && @@ -272,7 +272,7 @@ void x86_cpu_policy_clear_out_of_range_leaves(struct cpu_policy *p) } if ( p->basic.max_leaf < 0xd || !cpu_policy_xstates(p) ) - memset(p->xstate.raw, 0, sizeof(p->xstate.raw)); + p->xstate = (typeof(p->xstate)){}; else { /* This logic will probably need adjusting when XCR0[63] gets used. */ diff --git a/xen/lib/x86/private.h b/xen/lib/x86/private.h index 60bb82a400..4b8cb97e64 100644 --- a/xen/lib/x86/private.h +++ b/xen/lib/x86/private.h @@ -17,12 +17,14 @@ #else -#include <errno.h> -#include <inttypes.h> +#include <stdint.h> #include <stdbool.h> #include <stddef.h> -#include <string.h> +enum { +#define XEN_ERRNO(ident, rc) ident = (rc), +#include <xen/errno.h> +}; #include <xen/asm/msr-index.h> #include <xen/asm/x86-vendors.h> -- 2.34.1
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