Re: [PATCH] powerpc: Avoid link stack corruption for MMU on exceptions
flat view
From: Stephen Rothwell <hidden>
Date: 2013-08-13 05:06:20
Hi Mikey, On Tue, 13 Aug 2013 12:20:22 +1000 Michael Neuling [off-list ref] wrote:
quoted hunk ↗ jump to hunk
@@ -101,14 +102,14 @@ * kernel, we need to use LR to get to the 2nd level handler. So, save/restore
^^ CTR
quoted hunk ↗ jump to hunk
* it when required. */ -#define SAVE_LR(reg, area) mflr reg ; std reg,area+EX_LR(r13) -#define GET_LR(reg, area) ld reg,area+EX_LR(r13) -#define RESTORE_LR(reg, area) ld reg,area+EX_LR(r13) ; mtlr reg +#define SAVE_CTR(reg, area) mfctr reg ; std reg,area+EX_CTR(r13) +#define GET_CTR(reg, area) ld reg,area+EX_CTR(r13) +#define RESTORE_CTR(reg, area) ld reg,area+EX_CTR(r13) ; mtctr reg #else /* ...else LR is unused and in register. */
^^ and again -- Cheers, Stephen Rothwell sfr@canb.auug.org.au
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